{"id":4124,"date":"2025-01-23T10:30:19","date_gmt":"2025-01-23T10:30:19","guid":{"rendered":"https:\/\/cheapsslweb.com\/resources\/?p=4124"},"modified":"2025-11-14T06:43:43","modified_gmt":"2025-11-14T06:43:43","slug":"how-to-fix-the-err_ssl_key_usage_incompatible-error-multiple-ways","status":"publish","type":"post","link":"https:\/\/cheapsslweb.com\/resources\/how-to-fix-the-err_ssl_key_usage_incompatible-error-multiple-ways","title":{"rendered":"How to Fix the ERR_SSL_KEY_USAGE_INCOMPATIBLE Error?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Are you using a self-signed SSL certificate? Or have you recently updated the Google Chrome browser\u2019s version to 119.0.6045.160 or higher? If the answer to both queries is Yes, then there is a high chance that you may be greeted by the ERR_SSL_KEY_USAGE_INCOMPATIBLE warning message.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you are one of those users who is currently facing the this error and are searching the web (Internet) for methods or techniques to fix it, let me tell you &#8211; STOP the search. \u00a0You have landed on the right article. Irrespective of being a troublesome and frustrating error, there is a method or technique that can be employed to make it go away.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is SSL KEY USAGE INCOMPATIBLE Error?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">As per the newly added requirements, the Chrome browser will not be able to connect to the web servers running on IIS with self-signed SSL certs with default settings. And when Chrome browser tries to connect, this warning message gets popped up.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In simple terms, the ERR_SSL_KEY_USAGE_INCOMPATIBLE is a warning message that specifies that there is a mismatch between <a href=\"https:\/\/cheapsslweb.com\/resources\/how-to-configure-ssl-certificate-on-iis-with-powershell\">how the self-signed SSL cert is set up (configured) on the server<\/a> and how the browser (Google Chrome (119.0.6045.160 and higher) in this case) expects it to be configured.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Common Causes:<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Incorrect SSL Certificate Type:<\/strong> Utilizing a server authentication certificate for client authentication or its reverse.<\/li>\n\n\n\n<li><strong>Outdated TLS Versions:<\/strong> Sites that utilize <a href=\"https:\/\/cheapsslweb.com\/blog\/list-of-tls-versions-which-is-the-latest-tls-version\/\">outdated TLS protocols<\/a> that absentmindedly do not have browser support.<\/li>\n\n\n\n<li><strong>Misconfigured Server Settings:<\/strong> Server settings don&#8217;t match the purpose of the SSL certificate.<\/li>\n\n\n\n<li><strong>Expired or Revoked Certificates:<\/strong> Certificates that are <a href=\"https:\/\/cheapsslweb.com\/resources\/how-to-fix-the-invalid-ssl-tls-certificate-error\">invalid<\/a> as they have been revoked by their issuing authority.<\/li>\n\n\n\n<li><strong>Incomplete Certificate Chain: <\/strong>No <a href=\"https:\/\/cheapsslweb.com\/resources\/what-is-intermediate-certificate-and-how-to-download-it\">intermediate certificates<\/a> exist in the server&#8217;s chain.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Important Prerequisite<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Before tackling the issue at hand, it is important to <a href=\"https:\/\/cheapsslweb.com\/resources\/how-to-check-the-tls-version-of-your-website\">check the TLS protocol version<\/a> of the site you want to access. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Here&#8217;s how you can do it:<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Using Online Tools:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Visit SSL Labs&#8217; SSL Server Test (<a href=\"https:\/\/www.ssllabs.com\/ssltest\/\">https:\/\/www.ssllabs.com\/ssltest\/<\/a>)<\/li>\n\n\n\n<li>Enter the website&#8217;s URL and click &#8220;<strong>Submit<\/strong>&#8220;<\/li>\n\n\n\n<li>Look for the &#8220;<strong>Protocols<\/strong>&#8221; section in the results to see supported TLS versions<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Browser Developer Tools:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Open the Website in Google Chrome<\/strong><\/li>\n\n\n\n<li><strong>Press F12 to open Developer Tools<\/strong><\/li>\n\n\n\n<li>Go to the &#8220;<strong>Security<\/strong>&#8221; tab<\/li>\n\n\n\n<li>Look for &#8220;<strong>Protocol<\/strong>&#8221; under &#8220;<strong>Connection<\/strong>&#8220;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Command Line (for Advanced Users):<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Open a Terminal or Command Prompt<\/strong>.<\/li>\n\n\n\n<li>Use<strong> OpenSSL with the following command<\/strong>: openssl s_client -connect example.com:443 \u2013tls1_2<\/li>\n\n\n\n<li>Change &#8220;<strong>example.com<\/strong>&#8221; to the site&#8217;s domain and choose an optimal TLS version.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Fix SSL KEY USAGE INCOMPATIBLE Error? [If you are using Self-Signed Certificate]<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Follow the steps mentioned below:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Generate a Trusted self-signed SSL cert<\/li>\n\n\n\n<li>Export the trusted self-signed SSL cert<\/li>\n\n\n\n<li>Add the trusted self-signed SSL cert to the Trusted Certificates<\/li>\n\n\n\n<li>Set up IIS (Internet Information Services)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Let\u2019s explore each of these steps in detail.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 1: Generate a Trusted Self-signed SSL Cert<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Follow the steps mentioned below to generate a trusted self-signed SSL cert:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Click <strong>Search<\/strong>, placed on the taskbar.<\/li>\n\n\n\n<li>Type <strong>Windows PowerShell<\/strong> and press <strong>Enter<\/strong>.<\/li>\n\n\n\n<li>The <strong>Windows PowerShell<\/strong> window will appear.<\/li>\n\n\n\n<li>In the <strong>Windows PowerShell <\/strong>window, type below command and  <strong>Press Enter<\/strong>.<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code><strong><em>New-SelfSignedCertificate -Type Custom -DnsName \"server\", \"server.domain.local\",'192.168.0.1' -KeyUsage \"DigitalSignature\",\"KeyEncipherment\",\"KeyAgreement\" -KeyAlgorithm RSA -KeyLength 4096 -CertStoreLocation \"cert:\\CurrentUser\\My\" -FriendlyName \"EkranSelfSignedCert\" -NotAfter (Get-Date).AddMonths(36) -Subject \"EkranCA\"<\/em><\/strong><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>In the above command, here\u2019s what different parameters means:<\/em><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>DNS Name:<\/strong> Specify hostname, IP address, and domain name.<\/li>\n\n\n\n<li><strong>KeyLength:<\/strong> Specify the keyLenght (4096).<\/li>\n\n\n\n<li><strong>CertLocation:<\/strong> Specify the location were the SSL cert will be saved.<\/li>\n\n\n\n<li><strong>FiendlyName:<\/strong> Specify a friendly name for the newly created SSL cert.<\/li>\n\n\n\n<li><strong>NotAfter:<\/strong> Specify the date when the newly created SSL cert will expire.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Step 2: Export the Trusted Self-signed SSL Certificate<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Follow the steps mentioned below to export the trusted self-signed SSL cert:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Click <strong>Search<\/strong>, placed on the taskbar.<\/li>\n\n\n\n<li>Type <strong>Run<\/strong> and press <strong>Enter<\/strong>.<\/li>\n\n\n\n<li>The <strong>Run<\/strong> dialog box will appear.<\/li>\n\n\n\n<li>In the <strong>Open<\/strong> field, type <strong>mmc<\/strong>, and press <strong>Enter<\/strong>.<\/li>\n\n\n\n<li>The <strong>Console1 \u2013 [Console Root]<\/strong> window will appear.<\/li>\n\n\n\n<li>In the <strong>Console1 \u2013 [Console Root]<\/strong> window, click <strong>File<\/strong>.<\/li>\n\n\n\n<li>From the list, select <strong>Add\/Remove Snap-in<\/strong>.<\/li>\n\n\n\n<li>The <strong>Add or Remove Snap-ins<\/strong> window will appear.<\/li>\n\n\n\n<li>In the left pane, under the <strong>Available snap-ins<\/strong> section, click <strong>Certificates<\/strong>.<\/li>\n\n\n\n<li>Click the <strong>Add ><\/strong> <strong>button<\/strong>.<\/li>\n\n\n\n<li>The <strong>Certificates snap-in<\/strong> window will appear.<\/li>\n\n\n\n<li>In the&nbsp;<strong>Certificates&nbsp;<\/strong><strong>snap-in<\/strong> window, click the radio button placed adjacent to the <strong>My user account<\/strong> option.<\/li>\n\n\n\n<li>Click<strong> Finish<\/strong>.<\/li>\n\n\n\n<li>In the <strong>Console1 \u2013 [Console Root]<\/strong> window, navigate to <strong>Certificates<\/strong> &#8211; <strong>Current User<\/strong> &gt; <strong>Personal<\/strong> &gt;<strong> Certificates<\/strong>.<\/li>\n\n\n\n<li>Right-click on your certificate.<\/li>\n\n\n\n<li>From the list, select <strong>All Tasks<\/strong>.<\/li>\n\n\n\n<li>From the list, select<strong> Export<\/strong>.<\/li>\n\n\n\n<li>The <strong>Welcome to the Certificate Export Wizard <\/strong>page will appear.<\/li>\n\n\n\n<li>On the <strong>Welcome to the Certificate Export Wizard <\/strong>page, click <strong>Next<\/strong>.<\/li>\n\n\n\n<li>The <strong>Export Private Key<\/strong> page will appear.<\/li>\n\n\n\n<li>On The <strong>Export Private Key <\/strong>page, click the radio button placed in front of the <strong>Yes, export the private key <\/strong>option.<\/li>\n\n\n\n<li>The <strong>Export File Format<\/strong> page will appear.<\/li>\n\n\n\n<li>On the <strong>Export File Format <\/strong>page, check the checkboxes placed adjacent to the below options:\n<ul class=\"wp-block-list\">\n<li>Include all certificates in the certification path if possible<\/li>\n\n\n\n<li>Export all extended properties<\/li>\n\n\n\n<li>Enable certificate privacy<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Click <strong>Next<\/strong>.<\/li>\n\n\n\n<li>The <strong>Security<\/strong> page will appear.<\/li>\n\n\n\n<li>On the <strong>Security<\/strong> page, type the <strong>Password<\/strong> on your choice.<\/li>\n\n\n\n<li>Type the same password in the<strong> Confirm Password<\/strong> box.<\/li>\n\n\n\n<li>Click <strong>Next<\/strong>.<\/li>\n\n\n\n<li>The <strong>File to Export<\/strong> page will appear.<\/li>\n\n\n\n<li>On the <strong>File to Export<\/strong> page, enter the name of the cert.<\/li>\n\n\n\n<li>Click <strong>Browse<\/strong> and select the location where the cert will be exported to.<\/li>\n\n\n\n<li>Click <strong>Next<\/strong>.<\/li>\n\n\n\n<li>Click <strong>Finish<\/strong>.<\/li>\n\n\n\n<li>The confirmation dialog box will appear.<\/li>\n\n\n\n<li>Click <strong>OK<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Step 3: Add the Trusted Self-signed SSL Cert to the Trusted Certificates<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Follow the steps mentioned below to add the trusted self-signed SSL cert to the Trusted Certificates:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Navigate to the folder<\/strong> where the SSL cert has been exported.<\/li>\n\n\n\n<li><strong>Open the folder<\/strong> that contains the certificate.<\/li>\n\n\n\n<li><strong>Right-click on the certificate<\/strong>.<\/li>\n\n\n\n<li>From the list, select the <strong>Install PFX<\/strong> option.<\/li>\n\n\n\n<li>The <strong>Welcome to the Certificate Import Wizard <\/strong>page will appear.<\/li>\n\n\n\n<li>On the <strong>Welcome to the Certificate Import Wizard <\/strong>page, click the radio button placed adjacent to the <strong>Local Machine<\/strong> option.<\/li>\n\n\n\n<li>Click <strong>Next<\/strong>.<\/li>\n\n\n\n<li>The <strong>File to Import<\/strong> page will appear.<\/li>\n\n\n\n<li>On the <strong>File to Import<\/strong> page, click <strong>Next<\/strong>.&nbsp;<\/li>\n\n\n\n<li>The <strong>Private key protection<\/strong> page will appear.<\/li>\n\n\n\n<li>On the <strong>Private key protection <\/strong>page, type the <strong>password <\/strong>that you set in the <strong>Step 2<\/strong>.<\/li>\n\n\n\n<li>Click <strong>Next<\/strong>.<\/li>\n\n\n\n<li>The <strong>Certificate Store<\/strong> page will appear.<\/li>\n\n\n\n<li>On the <strong>Certificate Store<\/strong> page, click the radio button placed adjacent to the <strong>Place all certificates in the following store<\/strong> option.<\/li>\n\n\n\n<li>From the <strong>Certificate<\/strong> <strong>store<\/strong> list, select <strong>Trusted Root Certification Authorities<\/strong>.<\/li>\n\n\n\n<li>Click<strong> Next<\/strong>.<\/li>\n\n\n\n<li>Click <strong>Finish<\/strong>.<\/li>\n\n\n\n<li>The confirmation dialog box will appear.<\/li>\n\n\n\n<li>Click <strong>OK<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Step 4: Set up IIS (Internet Information Services)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Follow the steps mentioned below to <a href=\"https:\/\/cheapsslweb.com\/resources\/how-to-setup-a-self-signed-certificate-in-iis\">set up the Internet Information Service<\/a>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Click <strong>Search<\/strong>, placed on the taskbar.<\/li>\n\n\n\n<li>Type <strong>Internet Information Service<\/strong> and press <strong>Enter<\/strong>.<\/li>\n\n\n\n<li>The <strong>Internet Information Service (IIS) Manager<\/strong> window will appear.<\/li>\n\n\n\n<li>In the left pane, expand the node with the name of the target computer.<\/li>\n\n\n\n<li>In the middle pane, under the IIS section, click <strong>Server<\/strong> <strong>Certificates<\/strong>.<\/li>\n\n\n\n<li>The <strong>Server Certificates<\/strong> page will appear.<\/li>\n\n\n\n<li>On the<strong> Server Certificates <\/strong>page, in the right pane, under the <strong>Actions<\/strong> section, click <strong>Import<\/strong>.<\/li>\n\n\n\n<li>The <strong>Import Certificate <\/strong>dialog box will appear.<\/li>\n\n\n\n<li>In the <strong>Import Certificate <\/strong>dialog box, select the certificate by clicking on the three vertical dots.<\/li>\n\n\n\n<li>In the <strong>Password<\/strong> filed, type the password.&nbsp;<\/li>\n\n\n\n<li>Click <strong>OK<\/strong>.<\/li>\n\n\n\n<li>In the <strong>Internet Information Service (IIS) Manager<\/strong> window, in the left pane, expand the node with the name of the target computer.<\/li>\n\n\n\n<li>Expand the <strong>Site<\/strong> node.<\/li>\n\n\n\n<li>Click the <strong>Default Web Site <\/strong>option.<\/li>\n\n\n\n<li>In the middle pane, the <strong>Default Web Site Home page<\/strong> will appear.<\/li>\n\n\n\n<li>In the right pane, under the <strong>Actions<\/strong> tab, click <strong>Bindings<\/strong>.<\/li>\n\n\n\n<li>The <strong>Site Bindings<\/strong> window will appear.<\/li>\n\n\n\n<li>Double-click the <strong>https<\/strong> record.<\/li>\n\n\n\n<li>The <strong>Add Site Binding <\/strong>window will appear.<\/li>\n\n\n\n<li>In the Add Site Binding window perform these functions:<\/li>\n\n\n\n<li>Verify that the <strong>Type<\/strong> is selected as <strong>https<\/strong>.<\/li>\n\n\n\n<li>From the <strong>SSL<\/strong> <strong>certificate<\/strong> list, select the newly created cert.<\/li>\n\n\n\n<li>Click <strong>OK<\/strong>.<\/li>\n\n\n\n<li>Click <strong>Close<\/strong>.<\/li>\n\n\n\n<li>Restart the <strong>Chrome<\/strong> <strong>Browser<\/strong>.<\/li>\n\n\n\n<li>Verify whether the issue persists or not.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Resolve the ERR SSL KEY USAGE INCOMPATIBLE Error in Browsers<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Update Your Browser:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Use the most recent web browser with the newest version to guarantee better TLS protocol support.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>For Chrome: <\/strong>Tap the <strong>three dots and select Help About Google Chrome<\/strong>.<\/li>\n\n\n\n<li><strong>For Firefox:<\/strong> Press the <strong>menu icon &gt; Support &gt; About Firefox<\/strong>.<\/li>\n\n\n\n<li><strong>For Edge:<\/strong> Choose the <strong>three dots and then click Help and Feedback <\/strong>to access Microsoft Edge.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Check Your System Time:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Incorrect time settings on your system can result in SSL certificate validation difficulties. Confirm that your date and time on your computer are reliable.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>On Windows: <\/strong>Click the <strong>clock in the taskbar to edit the date and time.<\/strong><\/li>\n\n\n\n<li><strong>On macOS:<\/strong> <strong>Control Panel &gt; Date &amp; Time<\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Clear Browser Cache and Cookies:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Over time browser data may interfere with the establishment of SSL connections. Delete all cache and cookies from your browser and then close it.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>In Chrome:<\/strong> <strong>Settings &gt; Privacy and security &gt; Clear browsing data<\/strong><\/li>\n\n\n\n<li><strong>In Firefox: <\/strong>In S<strong>ettings navigate to Privacy &amp; Security<\/strong>. From the <strong>Cookies and Site Data section click Clear Data<\/strong>.<\/li>\n\n\n\n<li><strong>In Edge:<\/strong> Go to <strong>Privacy, search, and services, and tap Clear browsing data<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Disable Antivirus SSL Scanning:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Some antivirus software captures SSL connections resulting in this error. Shut off SSL scanning features in your antivirus tool to check if you can visit the website.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Search for options like &#8220;<strong>HTTPS Scanning<\/strong>,&#8221; &#8220;<strong>SSL Scanning<\/strong>,&#8221; or &#8220;<strong>Web Shield<\/strong>&#8221; in your virus protection settings.<\/li>\n\n\n\n<li>Shut off these options for a moment and revisit the site.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Use a Different Network:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If you&#8217;re on a public or corporate network, try accessing the website from a different network to rule out network-specific issues.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Switch from Wi-Fi to mobile data or vice versa<\/strong><\/li>\n\n\n\n<li>Try <strong>accessing the site from a different location<\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Check for Browser Extensions:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Some browser extensions can interfere with SSL connections. Try disabling all extensions and accessing the site again.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>In Chrome: More tools &gt; Extensions<\/strong><\/li>\n\n\n\n<li><strong>In Firefox: Add-ons &gt; Extensions<\/strong><\/li>\n\n\n\n<li><strong>In Edge: Extensions<\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Use Private\/Incognito Mode:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Access the website in your browser&#8217;s private or incognito mode to rule out issues caused by browser settings or extensions.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>In Chrome: <\/strong>Ctrl+Shift+N (Windows) or Command+Shift+N (Mac)<\/li>\n\n\n\n<li><strong>In Firefox:<\/strong> Ctrl+Shift+P (Windows) or Command+Shift+P (Mac)<\/li>\n\n\n\n<li><strong>In Edge:<\/strong> Ctrl+Shift+N (Windows) or Command+Shift+N (Mac)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">For Website Owners: Ensuring Proper SSL Configuration<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If you&#8217;re a website owner experiencing this error, consider the following steps:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Verify Certificate Usage:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Set your SSL certificate to the proper use (e.g. for server authentication.)<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Examine the &#8216;<strong>Extended Key Usage<\/strong>&#8216; part of your certificate information.<\/li>\n\n\n\n<li>Confirm that it includes &#8220;<strong>Server Authentication<\/strong>&#8221; (OID 1.3.6.1.5.5.7.3.1)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Update TLS Version:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Choose <a href=\"https:\/\/cheapsslweb.com\/blog\/tls-versions-explained-difference-between-tls-1-2-and-1-3\/\">TLS 1.2 and employ higher versions<\/a> on your web server. TLS versions including 1.0 and 1.1 are regarded as not safe.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>For Apache:<\/strong> Edit the SSL configuration file (usually ssl.conf) and add: <strong><em>SSLProtocol -all +TLSv1.2 +TLSv1.3<\/em><\/strong><\/li>\n\n\n\n<li><strong>For Nginx:<\/strong> Add to the server block in your configuration:<br><strong><em>ssl_protocols TLSv1.2 TLSv1.3;<\/em><\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Check Certificate Chain:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ensure your web server accepts the complete and right installation of your <a href=\"https:\/\/cheapsslweb.com\/blog\/what-is-ssl-certificate-chain\/\">SSL certificate chain<\/a>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use online tools like <a href=\"https:\/\/certera.com\/ssl-tools\/ssl-checker\">SSL Checker<\/a> to verify your certificate chain.<\/li>\n\n\n\n<li>Check that all <a href=\"https:\/\/cheapsslweb.com\/resources\/what-is-intermediate-certificate-and-how-to-download-it\">intermediate certificates<\/a> appear in the right sequence.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Renew or Replace Certificate:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Obtain a new certificate if yours is either expired or incorrectly issued.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Examine the ending date of your present certificate.<\/li>\n\n\n\n<li><a href=\"https:\/\/cheapsslweb.com\/buy-ssl-certificates\">Buy or Renew SSL Certificate<\/a> as per your business needs.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Configure Proper Cipher Suites:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Your server needs to use strong and current cipher suites.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>For Apache, add to your SSL configuration:<\/strong><br>SSLCipherSuite EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH<\/li>\n\n\n\n<li><strong>For Nginx, add to your server block:<\/strong><br>ssl_ciphers &#8216;EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH&#8217;;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Implement HTTP Strict Transport Security:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">By enabling HTTPS on your site&#8217;s traffic only HTTPS traffic is allowed to access the site. <a href=\"https:\/\/cheapsslweb.com\/resources\/what-is-hsts-certificate\">HSTS<\/a> plays a key role.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Add the following header to your server configuration:<\/strong><br>Strict-Transport-Security: max-age=31536000; includeSubDomains; preload<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Regular Security Audits:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Carry out continuous examinations of your SSL\/TLS configuration to verify your commitment to standard security guidelines.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Access platforms like the SSL Labs Server Test consistently.<\/li>\n\n\n\n<li>Be aware of <a href=\"https:\/\/cheapsslweb.com\/blog\/ssl-certificate\/\">current SSL\/TLS security advice<\/a>.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Handling the ERR_SSL_KEY_USAGE_INCOMPATIBLE problem is important for keeping your website both safe and open to visitors. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Adhering to the guidelines in this extensive guide enables you to detect and correct this SSL-associated issue and give your users an easy-to-use browsing atmosphere. To keep ahead of possible threats, you must maintain SSL security through ongoing efforts and updates.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Looking for guidance from experts regarding SSL certificates? With a <a href=\"https:\/\/cheapsslweb.com\/ssl-types\">broad selection of SSL Certificates<\/a> ensures your website is safe from errors related to SSL. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Are you using a self-signed SSL certificate? Or have you recently updated the Google Chrome browser\u2019s version to 119.0.6045.160 or higher? If the answer to both queries is Yes, then there is a high chance that you may be greeted by the ERR_SSL_KEY_USAGE_INCOMPATIBLE warning message. If you are one of those users who is currently<span class=\"morelink d-block mt-3\"><a href=\"https:\/\/cheapsslweb.com\/resources\/how-to-fix-the-err_ssl_key_usage_incompatible-error-multiple-ways\">Read More<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":4136,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[284,285],"class_list":["post-4124","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ssl-errors-guide","tag-err_ssl_key_usage_incompatible","tag-err_ssl_key_usage_incompatible-self-signed-certificate","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Fix ERR_SSL_KEY_USAGE_INCOMPATIBLE Error<\/title>\n<meta name=\"description\" content=\"Find here what is SSL Key Usage Incompatible Error, causes, how to fix 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