{"id":6455,"date":"2026-09-23T10:16:08","date_gmt":"2026-09-23T10:16:08","guid":{"rendered":"https:\/\/cheapsslweb.com\/resources\/?p=6455"},"modified":"2026-09-23T10:16:11","modified_gmt":"2026-09-23T10:16:11","slug":"win-acme-complete-guide-for-automating-ssl-certificates-on-windows","status":"publish","type":"post","link":"https:\/\/cheapsslweb.com\/resources\/win-acme-complete-guide-for-automating-ssl-certificates-on-windows\/","title":{"rendered":"Win-ACME SSL Setup Guide: Installation, Configuration &amp; Automation"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">When you have to manage SSL\/TLS certificates for numerous websites, servers, or applications on your own, it can be a pretty challenging endeavor. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Working with certificates means dealing with expiration times, timely renewals, and proper installation of valid certificates. If you obliviously ignore the renewal period, you might receive browser security warnings or have your website down for some time.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">win-acme handles this task for you in the Windows operating system. It is an ACME client intended for Windows-based systems, which is widely used in conjunction with Microsoft IIS web servers. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It can request <a href=\"https:\/\/cheapsslweb.com\/ssl-certificate-automation\">ACME-compatible certificates<\/a> from Certificate Authorities (CAs), install them, create HTTPS bindings, and renew the certificates.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This article describes what win-acme is, how it works, how to install and configure it, how to generate and renew certificates with its help, and how to solve problems that might arise while operating the software.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is Win-ACME?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Win-ACME helps Windows users perform simple SSL\/TLS certificate tasks. ACME stands for\u00a0<a href=\"https:\/\/cheapsslweb.com\/blog\/what-is-acme-importance-of-automated-certificate-management\/\">Automated Certificate Management Environment<\/a>, a protocol that lets server applications communicate with Certificate Authorities to manage the certificate lifecycle.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Rather than the tedious <a href=\"https:\/\/cheapsslweb.com\/resources\/ssl-csr-generation-guides-tutorials\/\">manual process of generating the Certificate Signing Request (CSR)<\/a>, validating the domain, receiving the certificates, and installing them each time they expire, win-acme allows you to automate most of the above process.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How does it work?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">win-acme utilizes the ACME protocol to connect with a Certificate Authority (CA) compatible with the ACME standard in order to expedite the process of <a href=\"https:\/\/cheapsslweb.com\/buy-ssl-certificates\">obtaining SSL certificates<\/a>. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The first step is to confirm ownership of the domain<\/strong> for which you wish to obtain the certificate using either the <a href=\"https:\/\/cheapsslweb.com\/blog\/what-is-domain-control-validation-dcv-methods-and-common-mistakes\/\">HTTP or DNS validation approach<\/a>. Once ownership is confirmed, the CA provides you with the SSL certificate.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Once the SSL certificate has been obtained, win-acme can help you install it on the Windows Certificate Store and set up the HTTPS binding with IIS. Additionally, it can schedule periodic certificate checks and renewals even before the existing certificate expires. <\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, win-acme provides a <a href=\"https:\/\/cheapsslweb.com\/acme\/sectigo-acme-ssl-certificate\">completely automated solution<\/a> to the process of obtaining, verifying, installing, and renewing SSL certificates.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Install win-acme on Windows Server?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If everything is set up in your Windows Server environment, you can start the installation process for Win-ACME through a manual process or by running PowerShell to automatically download and extract the latest version of the software.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 1: Create the Installation Folder<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">First, create a permanent folder for Win-ACME. <strong>Open PowerShell as Administrator and run:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>New-Item -ItemType Directory -Path \"C:\\Tools\\win-acme\" -Force<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">This creates the <strong>C:\\Tools\\win-acme directory<\/strong>, where the Win-ACME application files will be stored.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Option A: Download Win-ACME Manually<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The easiest option for beginners is to <strong>download Win-ACME manually<\/strong>. <\/li>\n\n\n\n<li><strong>Visit the official GitHub releases page and download<\/strong> the latest x64.pluggable.zip package. <\/li>\n\n\n\n<li>After downloading the file, extract its contents into the C:\\Tools\\win-acme folder.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Option B: Download Win-ACME Using PowerShell<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Alternatively, <strong>you can use PowerShell to automatically download<\/strong> the latest release and extract it into the installation directory.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$installPath = \"C:\\Tools\\win-acme\"\nNew-Item -ItemType Directory -Path $installPath -Force\n$latestRelease = Invoke-RestMethod -Uri \"https:\/\/api.github.com\/repos\/win-acme\/win-acme\/releases\/latest\"\n$downloadUrl = $latestRelease.assets |\n\u00a0\u00a0\u00a0 Where-Object { $_.name -like \"*pluggable.zip\" } |\n\u00a0\u00a0\u00a0 Select-Object -ExpandProperty browser_download_url\n$zipPath = \"$env:TEMP\\win-acme.zip\"\nInvoke-WebRequest -Uri $downloadUrl -OutFile $zipPath\nExpand-Archive -Path $zipPath -DestinationPath $installPath -Force\nRemove-Item $zipPath\nWrite-Host \"Win-ACME installed at: $installPath\"<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Step 2: Verify the Installation<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">After installation, open PowerShell, move to the installation directory, and check the installed version.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>cd C:\\Tools\\win-acme\n.\\wacs.exe --version<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>If the installation was successful<\/strong>, PowerShell should display the installed Win-ACME version. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>If wacs.exe is not recognized<\/strong>, check that the ZIP file was extracted correctly and that PowerShell is currently running from the correct folder.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Also Read:<\/strong> <a href=\"https:\/\/cheapsslweb.com\/resources\/how-to-install-an-acme-ssl-certificate-on-windows-iis\/\">How to Install ACME SSL Certificates on Windows IIS using Win-ACME?<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Setting Up Configuration and Credentials<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Once you have installed Win-ACME, you will need to set up the details necessary for connecting to your ACME server and DNS provider. This step might include items such as the URL for the ACME directory, <a href=\"https:\/\/cheapsslweb.com\/blog\/what-is-acme-external-account-binding-eab\/\">EAB credentials<\/a>, email, <a href=\"https:\/\/cheapsslweb.com\/resources\/acme-dns-01-challenge-setup-for-wildcard-ssl-certificates\/\">DNS API token<\/a>, and storage for your certificate.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Step 3: Create a Configuration Folder<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">You need to create a new folder that will store the configuration and credentials file.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>New-Item -ItemType Directory -Path \"C:\\ProgramData\\win-acme-config\" -Force<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">Step 4: Create the Credentials File<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Get the configuration file ready with the necessary info on the ACME and DNS. Make sure to change the placeholder values with your actual data.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@\"\nACME_SERVER=https:\/\/acme.example.com\/acme\/directory\nEAB_KEY_IDENTIFIER=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\nEAB_KEY=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\nEMAIL=admin@example.com\nCF_API_TOKEN=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\nCERT_PATH=C:\\ssl-certs\n\"@ | Out-File -FilePath \"C:\\ProgramData\\win-acme-config\\acme-credentials.txt\" -Encoding UTF8<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>The value of ACME_SERVER should refer to your ACME server<\/strong>. <\/li>\n\n\n\n<li>The EAB Key Identifier and the EAB Key are usually given to you by the Certificate Authority or the person who supports your ACME service. <\/li>\n\n\n\n<li>You need a DNS API token if you are automating the DNS validation process.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Step 5: Secure the Credentials<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">As there is important data such as API tokens and authentication keys mentioned in the configuration file, it is recommended that access be limited. <strong>Below is the list of PowerShell commands limiting access to the Administrators group only:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$acl = Get-Acl \"C:\\ProgramData\\win-acme-config\"\n$acl.SetAccessRuleProtection($true, $false)\n$adminRule = New-Object System.Security.AccessControl.FileSystemAccessRule(\n\u00a0\u00a0\u00a0 \"BUILTIN\\Administrators\", \"FullControl\",\n\u00a0\u00a0\u00a0 \"ContainerInherit,ObjectInherit\", \"None\", \"Allow\")\n$acl.SetAccessRule($adminRule)\nSet-Acl \"C:\\ProgramData\\win-acme-config\" $acl<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">Step 6: Load the Configuration<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Before using the stored values in the current PowerShell session, load the configuration and <strong>assign the values to environment variables:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$config = Get-Content \"C:\\ProgramData\\win-acme-config\\acme-credentials.txt\" |\n\u00a0\u00a0\u00a0 ConvertFrom-StringData\n$env:ACME_SERVER = $config.ACME_SERVER\n$env:EAB_KEY_IDENTIFIER = $config.EAB_KEY_IDENTIFIER\n$env:EAB_KEY = $config.EAB_KEY\n$env:EMAIL = $config.EMAIL\n$env:CF_API_TOKEN = $config.CF_API_TOKEN\n$env:CERT_PATH = $config.CERT_PATH\nWrite-Host \"Configuration loaded successfully!\"<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">These values are now available for use during the current PowerShell session.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Creating the Certificate Storage Folder<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Win-ACME also needs a location to store exported certificates if you plan to use certificate files outside the Windows Certificate Store.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Step 7: Create the Certificate Directory<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Create a dedicated folder for SSL certificates:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>New-Item -ItemType Directory -Path \"C:\\ssl-certs\" -Force<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">Step 8: Grant IIS Access<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">If IIS needs to access certificate files stored in this directory, grant the IIS worker group the required permissions:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$acl = Get-Acl \"C:\\ssl-certs\"\n$rule = New-Object System.Security.AccessControl.FileSystemAccessRule(\n\u00a0\u00a0\u00a0 \"BUILTIN\\IIS_IUSRS\", \"ReadAndExecute\",\n\u00a0\u00a0\u00a0 \"ContainerInherit,ObjectInherit\", \"None\", \"Allow\")\n$acl.AddAccessRule($rule)\nSet-Acl \"C:\\ssl-certs\" $acl<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">In case IIS or any other service requires direct access to your exported certificate files, you must perform this action.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Configuring Your DNS Provider<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">When you are using the DNS-01 validation process, a temporary DNS TXT record has to be created for domain proof. So, in case you are going to use automatic validation, make sure that your DNS provider is providing an API or other methods to let Win-ACME create temporary DNS records.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Step 9: Cloudflare DNS Setup<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Cloudflare needs an API token with the permission of managing DNS for the particular zone. The token needs to have the minimum permissions required for this purpose such as DNS edit for the given domain instead of all zone access.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Once the token has been generated, it is essential to keep it secure and insert the date in your configuration file by using the CF_API_TOKEN parameter.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>You may also check whether the token is working via PowerShell:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$token = \"YOUR_CLOUDFLARE_TOKEN_HERE\"\n$headers = @{\n\u00a0\u00a0\u00a0 \"Authorization\" = \"Bearer $token\"\n}\n$response = Invoke-RestMethod `\n\u00a0\u00a0\u00a0 -Uri \"https:\/\/api.cloudflare.com\/client\/v4\/user\/tokens\/verify\" `\n\u00a0\u00a0\u00a0 -Headers $headers\n$response.result.status\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">A successful result should show: <strong>active<\/strong><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Other DNS Providers<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Win-ACME supports multiple validation plugins and DNS providers. Depending on the provider, you may need credentials such as an API token, API key and secret, cloud account credentials, or IAM permissions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>For example, DNS automation may be configured using providers such as:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>DNS Provider<\/strong><\/td><td><strong>Required Credentials<\/strong><\/td><\/tr><tr><td>Cloudflare<\/td><td>API Token<\/td><\/tr><tr><td>Azure DNS<\/td><td>Azure application or identity credentials<\/td><\/tr><tr><td>GoDaddy<\/td><td>API Key and API Secret<\/td><\/tr><tr><td>AWS Route 53<\/td><td>IAM credentials or role permissions<\/td><\/tr><tr><td>Manual DNS<\/td><td>DNS records created manually<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The exact validation plugin and authentication method depend on the Win-ACME version and the DNS provider you use.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Verifying the Installation and Configuration<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Before requesting a production certificate, it is a good idea to verify that the main components are working correctly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>First, confirm that Win-ACME is installed:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>cd C:\\Tools\\win-acme\n.\\wacs.exe --version\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Next, check whether the main configuration values can be read correctly:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$config = Get-Content \"C:\\ProgramData\\win-acme-config\\acme-credentials.txt\" |\n\u00a0\u00a0\u00a0 ConvertFrom-StringData\nWrite-Host \"ACME Server : $($config.ACME_SERVER)\"\nWrite-Host \"Email\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 : $($config.EMAIL)\"\nWrite-Host \"Cert Path\u00a0\u00a0 : $($config.CERT_PATH)\"\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>If you are using Cloudflare for DNS validation, you can also test the API token:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$config = Get-Content \"C:\\ProgramData\\win-acme-config\\acme-credentials.txt\" |\n\u00a0\u00a0\u00a0 ConvertFrom-StringData\n$headers = @{\n\u00a0\u00a0\u00a0 \"Authorization\" = \"Bearer $($config.CF_API_TOKEN)\"\n}\nInvoke-RestMethod `\n\u00a0\u00a0\u00a0 -Uri \"https:\/\/api.cloudflare.com\/client\/v4\/user\/tokens\/verify\" `\n\u00a0\u00a0\u00a0 -Headers $headers\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Finally, test connectivity to the configured ACME server:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$config = Get-Content \"C:\\ProgramData\\win-acme-config\\acme-credentials.txt\" |\n\u00a0\u00a0\u00a0 ConvertFrom-StringData\nInvoke-RestMethod -Uri $config.ACME_SERVER\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">When the connection is established, the ACME server will communicate the list of endpoints currently in use, such as newAccount, newOrder, newNonce, and revokeCert, etc. <strong>Upon the successful completion of these steps<\/strong>, the server will be ready to start working with the issuing and management of SSL and TLS using Win-ACME.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Configure win-acme?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Once you&#8217;ve set up the win-acme program, next you need to set it up in accordance with your CA, checking methods, and certificate deployment needs. Typically, you would have to select an ACME server, provide account details and credentials if it applies, <a href=\"https:\/\/cheapsslweb.com\/blog\/acme-challenges-for-domain-validation-which-is-best\/\">choose a validation method (like HTTP-01, DNS-01)<\/a>, and specify a storage location for your certificate.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>With websites managed on IIS<\/strong>, win-acme detects the configured sites and domain bindings automatically. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You can start the program by <strong>running PowerShell as an admin<\/strong>, going to the installation folder, and executing the following ..\\wacs.exe command in it. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Then,<strong> from the proposed options<\/strong>, you can select the site\/domain to secure and follow prompts for certificate validation and installation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In case you are dealing with a commercial Certificate Authority like Sectigo and DigiCert that can be used with ACME, it might be a requirement to provide the server URL for ACME as well as External Account Binding credentials that were given to you by the Certificate Authority. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>In order to verify the DNS<\/strong>, please identify the DNS provider plugin that can be used in conjunction with win-acme and provide the necessary API credentials so that win-acme would be able to create DNS TXT records. HTTP validation, on the contrary, usually requires the domain to be set up properly and publicly accessible on the web server.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Moreover, you can define where the certificate should be saved after it has been issued. <strong>Windows Certificate Store is usually used for IIS<\/strong>, whereas other applications might require certificates in PFX or PEM exported formats. After you have set the validation, storage and installation parameters, win-acme will be able to remember the renewal configuration and use it later.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Generate SSL Certificates Using win-acme?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Upon completion of installation and configuration of the win-acme application, you can start using it for requesting and creating SSL certificates for your desired domains. The application features an interactive process, as well as several command-line options, which can help <a href=\"https:\/\/cheapsslweb.com\/automated-rapidssl\">automate the deployment of SSL and TLS certificates<\/a>. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Depending on the configuration, win-acme can retrieve the SSL certificates from an ACME-compatible Certificate Authority, perform domain verification, and automatically save the certificate on the computer and also configure IIS.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Using the Interactive Method<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">To begin, open PowerShell or Command Prompt as an Administrator, navigate to the win-acme installation directory, <strong>and run:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>.\\wacs.exe<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">win-acme will show you the options available. You can select option <strong>N<\/strong> to get a certificate using the default settings or choose option <strong>M<\/strong> to get the advanced options. The advanced method can come in handy when you want further control, such as entering domain names manually or requesting for a wildcard certificate.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Then choose the source of your domain names. <strong>If you have an IIS-hosted website, win-acme will detect the IIS bindings automatically<\/strong>. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Alternatively, you can enter one or more domain names, like\u00a0 example.com and www.example.com, manually. And for <a href=\"https:\/\/cheapsslweb.com\/ssl-types\/cheap-wildcard-ssl-certificates\">wildcard certificates<\/a>, you will need to provide a domain, like *.example.com.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The subsequent step is domain validation. <strong>For standard websites, HTTP-domain validation<\/strong> can be applied if the domain can be accessed publicly from the web server. win-acme performs the necessary ACME challenge creation, and later the Certificate Authority checks that challenge. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>In the case of wildcard certificates, DNS-domain validation is used<\/strong>. win-acme verifies the ownership of the domain by creating temporary DNS TXT records, which can be done by manually or with the help of a plug-in from a supported DNS provider.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After being verified successfully, the Certificate Authority issues the SSL certificate. Then, win-acme will install it in the Windows Certificate Store and, when configured for IIS, will automatically create or update site HTTP bindings.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Using the Command Line<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">For automated deployment, win-acme can be configured through command-line parameters. <strong>For example, a normal command to get a certificate for several domains may look similar to the following:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>.\\wacs.exe `\n\u00a0 --source manual `\n\u00a0 --host \"example.com,www.example.com\" `\n\u00a0 --validation http-01 `\n\u00a0 --store certificatestore `\n\u00a0 --installation iis `\n\u00a0 --accepttos `\n\u00a0 --emailaddress \"admin@example.com\"<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">If you want to <a href=\"https:\/\/cheapsslweb.com\/automated-rapid-ssl-wildcard\">obtain a wildcard certificate<\/a>, you have to make use of DNS validation rather than the HTTP validation process. The actual command and parameters can be different because it depends on the DNS provider plugin and the authentication method. Once the certificate is successfully issued, the renewal configuration is saved by win-acme.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Renew SSL Certificates Automatically?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To renew SSL certificates automatically, <strong>win-acme allows users to create a scheduled task in Windows Task Scheduler<\/strong>. This task will periodically scan for managed certificates and start the renewal process when appropriate.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>During the renewal process<\/strong>, win-acme repeats the previously configured domain validation steps and requests a new SSL certificate from the ACME Certificate Authority and installs it automatically. If IIS integration is set up, the renewal process can also update the HTTPS binding of the server with the new certificate.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Once everything is set up, ensure that the scheduled task has been enabled and test the renewal process.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Revoke SSL Certificates?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SSL\/TLS certificates are revocable when their private keys are exposed, wrongly issued, or when there&#8217;s no longer any need for them. Before proceeding with the revocation process, make sure to install and test the replacement certificate in case the domain or the application is still using HTTPS.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The process of revoking the certificate will depend on the Certificate Authority and their particular ACME setup. To revoke the certificate, it is possible to do so via win-acme or the management interface of the Certificate Authority.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Configure win-acme with IIS<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">win-acme is able to connect with <a href=\"https:\/\/cheapsslweb.com\/resources\/how-to-install-an-ssl-certificate-on-iis-10\/\">Microsoft IIS<\/a>, enabling installation of SSL\/TLS certificates as well as HTTPS configuration. The moment wacs.exe is run, it discovers websites along with domain bindings present in IIS. Thus, websites can be selected, domain validation methods can be selected, and certificates can be requested.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>After getting validated<\/strong>, win-acme is able to automatically store the certificate in the Windows Certificate Store and make necessary updates to the IIS HTTPS binding. Thus, the website can use the received certificate automatically without needing to import the certificate through IIS Manager.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>For HTTP validation<\/strong>, it is important that the setting of the domain is correct in IIS as well as publicly available on <a href=\"https:\/\/cheapsslweb.com\/blog\/port-80-http-vs-port-443-https-major-difference-to-know\/\">port 80<\/a>. If there are multiple websites on the same IP address, SNI must be enabled on the required HTTPS bindings. Upon being set up, win-acme will do the updates in the IIS certificate binding without having to renew the certificate.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>IIS HTTPS Configuration Best Practices<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In order to set up HTTPS in IIS correctly, it is important to verify that all websites have a <a href=\"https:\/\/cheapsslweb.com\/\">valid SSL or TLS certificate<\/a>. All HTTP traffic must be redirected to HTTPS as appropriate when configuring HTTPS. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Use only <a href=\"https:\/\/cheapsslweb.com\/blog\/ssl-vs-tls-which-is-best-cryptographic-protocol-should-you-use\/\">current protocols such as TLS <\/a>and disable any older protocols as per your server and application compatibility requirements.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Also Read:<\/strong> <a href=\"https:\/\/cheapsslweb.com\/blog\/http-to-https-migration-the-complete-guide\/\">HTTP to HTTPS Migration \u2013 Complete Technical Guide<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When configuring HTTPS for websites sharing one IP address, it is important to make sure that <a href=\"https:\/\/cheapsslweb.com\/blog\/what-is-server-name-indication-sni-difference-between-sni-and-san\/\">SNI<\/a> is enabled and the correct hostname is specified. Keep the keys private and monitor the expiration and renewal status of the certificates regularly.\u00a0Make sure that win-acme is being used to schedule certificate renewal tasks.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How win-acme Works with CAs like Sectigo and DigiCert?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">win-acme acts as an ACME client interacting with ACME-enabled Certificate Authorities (CAs) while performing the task of obtaining and maintaining SSL\/TLS certificates. CAs such as Sectigo and DigiCert may offer ACME features to their certified products, allowing win-acme to complete the certification process automatically.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In order to establish a connection between win-acme and a commercial CA, one usually requires the ACME server URL of the CA. Sometimes, Additional Account Binding (EAB) credentials are also necessary. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, once the necessary parameters for connection are set, the win-acme client would ask the CA for a certificate, complete the verification of the domain, install the received certificate, and ensure automatic renewal in the future.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nonetheless, the precise combination of parameters required will depend on the type of commercial CA and certificate used. So, before beginning the setup for win-acme, make sure that your certificate service by Sectigo or DigiCert supports ACME technology and consequently provides the needed parameters for the setup.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DNS Validation vs HTTP Validation in win-acme<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Feature<\/strong><\/td><td><strong>DNS Validation (DNS-01)<\/strong><\/td><td><strong>HTTP Validation (HTTP-01)<\/strong><\/td><\/tr><tr><td><strong>How it works<\/strong><\/td><td>Creates a DNS TXT record to verify domain ownership<\/td><td>Places a challenge file on the web server<\/td><\/tr><tr><td><strong>Port 80 required<\/strong><\/td><td>No<\/td><td>Yes<\/td><\/tr><tr><td><strong>Wildcard certificates<\/strong><\/td><td>Supported<\/td><td>Not supported<\/td><\/tr><tr><td><strong>Public web server required<\/strong><\/td><td>No<\/td><td>Yes<\/td><\/tr><tr><td><strong>DNS API required for automation<\/strong><\/td><td>Usually yes<\/td><td>No<\/td><\/tr><tr><td><strong>Setup complexity<\/strong><\/td><td>Higher<\/td><td>Simpler<\/td><\/tr><tr><td><strong>Best for<\/strong><\/td><td>Wildcard certificates, private infrastructure, and restricted networks<\/td><td>Standard public websites hosted on IIS<\/td><\/tr><tr><td><strong>Validation location<\/strong><\/td><td>DNS zone<\/td><td>\/.well-known\/acme-challenge\/ path on the website<\/td><\/tr><tr><td><strong>Automation requirement<\/strong><\/td><td>DNS provider API credentials may be needed<\/td><td>win-acme can automatically handle validation through IIS<\/td><\/tr><tr><td><strong>Main advantage<\/strong><\/td><td>Supports wildcard certificates and does not require port 80<\/td><td>Easy to configure for publicly accessible websites<\/td><\/tr><tr><td><strong>Main limitation<\/strong><\/td><td>Requires access to DNS management or API credentials<\/td><td>Requires the domain to be reachable over HTTP<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Common win-acme Errors and Fixes<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Even though win-acme plays a big role in handling your certificate administration, there are risks of making mistakes in domain setup or validation, permissions issues, and even IIS configuration errors. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Perhaps the <a href=\"https:\/\/cheapsslweb.com\/resources\/how-to-fix-acme-ssl-certificate-errors\/\">most common problem is domain validation failure<\/a>, which may occur when some wrong configurations of the domain are present (e.g., the domain is set up incorrectly, port 80 is being blocked, or the ACME challenge file cannot be found). <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Other problems that could potentially prevent the normal work of DNS validation are <strong>incorrect API credentials and DNS propagation<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>An access denied error<\/strong> is yet another issue encountered by win-acme. This happens when the win-acme program is not capable of gathering sufficient permissions to connect to IIS, install certificates, schedule tasks, and access the certificate storage. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The issues can be solved when PowerShell or win-acme is executed in administrator mode, and folder permissions of the folders are reviewed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Errors that happen with IIS may be related to problems <\/strong>with HTTPS bindings and <a href=\"https:\/\/cheapsslweb.com\/blog\/port-443-https\/\">port 443 unavailability<\/a>. In this case, it is suggested to check the bindings, hostname, assigned certificate, and SNI settings in case there are several sites sharing one IP address. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>In situations when an automatic renewal of the certificate has failed, the following steps should be taken:<\/strong> <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Check Windows Task Scheduler tasks; make sure that there were no changes made regarding the win-acme path; check the log files in the renewal.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>Certificate Renewal Failed? Here&#8217;s How to Fix It<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In the case of win-acme certificate renewal failure, the first thing to do is to check the renewal task in Windows Task Scheduler. Make sure that the task is enabled, the win-acme installation folder is correct, and the account you are using to run the renewal task has the proper rights.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Once this is done, you can attempt to renew the certificate manually and analyze the error message. Errors are usually associated with a failed domain verification process, a closed port 80, incorrect DNS settings or API credentials, expired credentials, etc. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In addition, for IIS installations, make sure that website bindings and certificate installation are correctly configured too.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Once you have resolved the issue, you can check your renewal process one more time.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">win-acme is a solution for SSL\/TLS certificate management because it enables automation of the processes of certificate issuance, domain validation, certificate installation, and renewal. Cooperation with IIS and an ACME-compatible Certification Authority can save a lot of manual effort and prevent the certificates from expiring.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/cheapsslweb.com\/ssl-brands\">Commercial SSL\/TLS certificate<\/a> users may benefit from ACME-compatible solutions since it makes managing certificates easier. The win-acme solution allows for automatic request, installation, and renewal of SSL certificates if the ACME endpoint, validation method, and deployment method are configured correctly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Use win-acme program or any other <a href=\"https:\/\/cheapsslweb.com\/ssl-certificate-automation\">automated SSL certificate solution<\/a> to enjoy the benefits of secure HTTPS connections while managing the certificates without complexity.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>When you have to manage SSL\/TLS certificates for numerous websites, servers, or applications on your own, it can be a pretty challenging endeavor. Working with certificates means dealing with expiration times, timely renewals, and proper installation of valid certificates. If you obliviously ignore the renewal period, you might receive browser security warnings or have your<span class=\"morelink d-block mt-3\"><a href=\"https:\/\/cheapsslweb.com\/resources\/win-acme-complete-guide-for-automating-ssl-certificates-on-windows\/\">Read More<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":6458,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[568],"tags":[634,632,633],"class_list":["post-6455","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ssl-automation","tag-automate-ssl-certificates-on-windows","tag-win-acme-for-windows-ssl-automation","tag-win-acme-ssl-guide","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Win-ACME Guide 2026: Automate SSL Installation and Renewal<\/title>\n<meta name=\"description\" content=\"Step by step Win-ACME guide covering SSL certificate installation, configuration, automatic renewal, and management on Windows.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cheapsslweb.com\/resources\/win-acme-complete-guide-for-automating-ssl-certificates-on-windows\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Win-ACME Guide 2026: Automate SSL Installation and Renewal\" \/>\n<meta property=\"og:description\" content=\"Step by step Win-ACME guide covering SSL certificate installation, configuration, automatic renewal, and management on Windows.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cheapsslweb.com\/resources\/\" \/>\n<meta property=\"og:site_name\" content=\"CheapSSLWeb.com Resources\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/cheapsslweb\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-23T10:16:08+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-23T10:16:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cheapsslweb.com\/resources\/wp-content\/uploads\/2026\/09\/win-acme-automation-guide.avif\" \/>\n\t<meta property=\"og:image:width\" content=\"960\" \/>\n\t<meta property=\"og:image:height\" content=\"621\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Janki Mehta\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@cheapsslweb\" \/>\n<meta name=\"twitter:site\" content=\"@cheapsslweb\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/win-acme-complete-guide-for-automating-ssl-certificates-on-windows\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/win-acme-complete-guide-for-automating-ssl-certificates-on-windows\\\/\"},\"author\":{\"name\":\"Janki Mehta\",\"@id\":\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/#\\\/schema\\\/person\\\/c7d26eacacd9392c23be9d82e9af145e\"},\"headline\":\"Win-ACME SSL Setup Guide: Installation, Configuration &amp; 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