--- a/browser/base/content/aboutNetError.xhtml
+++ b/browser/base/content/aboutNetError.xhtml
@@ -489,17 +489,17 @@
         <!-- Override section - For ssl errors only.  Removed on init for other
              error types.  -->
         <div id="securityOverrideDiv">
           <a id="securityOverrideLink" href="javascript:showSecuritySection();" >&securityOverride.linkText;</a>
           <div id="securityOverrideContent" style="display: none;">&securityOverride.warningContent;</div>
         </div>
 
         <div id="learnMoreContainer">
-          <p><a href="https://support.mozilla.org/kb/tls-error-reports" id="learnMoreLink" target="new">&errorReporting.learnMore;</a></p>
+          <p><a href="https://support.mozilla.org/kb/what-does-your-connection-is-not-secure-mean" id="learnMoreLink" target="new">&errorReporting.learnMore;</a></p>
         </div>
 
         <div id="buttonContainer">
           <button id="returnButton" autocomplete="off" autofocus="true">&returnToPreviousPage.label;</button>
           <div id="buttonSpacer"></div>
           <button id="advancedButton" autocomplete="off" autofocus="true">&advanced.label;</button>
         </div>
       </div>

--- a/browser/base/content/aboutcerterror/aboutCertError.xhtml
+++ b/browser/base/content/aboutcerterror/aboutCertError.xhtml
@@ -267,17 +267,17 @@
       <div id="errorLongContent">
 
         <!-- Short Description -->
         <div id="errorShortDesc">
           <p>&certerror.introPara;</p>
         </div>
         <p id="badStsCertExplanation">&certerror.whatShouldIDo.badStsCertExplanation;</p>
         <div>
-          <p><a href="https://support.mozilla.org/kb/tls-error-reports" id="learnMoreLink" target="new">&certerror.learnMore;</a></p>
+          <p><a href="https://support.mozilla.org/kb/what-does-your-connection-is-not-secure-mean" id="learnMoreLink" target="new">&certerror.learnMore;</a></p>
         </div>
 
         <div id="buttonContainer">
           <button id="returnButton" autocomplete="off" autofocus="true">&certerror.returnToPreviousPage.label;</button>
           <div id="buttonSpacer"></div>
           <button id="advancedButton" autocomplete="off" onclick="toggleVisibility('advancedPanel');" autofocus="true">&certerror.advanced.label;</button>
         </div>
       </div>