How do I check if my SSL certificate has expired in Firefox?

  1. Click the Advanced button in that window.
  2. To see the certificate, click View Certificate.
  3. There will be a new window open. Check the rows Begins on and Expires on under Period of Validity to see if the certificate has passed its expiration date.

How do I fix Firefox’s SEC ERROR EXPIRED CERTIFICATE error?

#1 Change the date and time on your computer.

  1. Click Date and Time > Adjust Date/Time in the Mozilla Firefox taskbar.
  2. Go to the ‘Set Time Automatically’ option on the settings page and turn it on.
  3. Select ‘Add Clocks for Different Time Zones’ from the drop-down menu.
  4. Click Internet Time > Change Settings in the next window.
  5. Select ‘’ and click ‘Update Now’ after ticking the ‘Synchronize with an Internet Time Server’ option.
  6. Choose OK.

#2 Configure security settings as a second option.

  1. Right-click’ Command Prompt’ in the Cortana search box.
  2. Choose Run as Administrator, then Yes when prompted by the command prompt.
  3. Write down the commands’regsvr32 softpub.dll’, ‘Regsvr32 Wintrust.dll’, and ‘Regsvr32 Wintrust.dll’ after the ‘C:WINDOWSsystem32>’ message appears. After each command, press Enter.
  4. You’ll get a dialogue box every time you tap Enter, and you’ll have to click OK to continue.
  5. Restart your computer.

#3 Delete the history of Internet Explorer

  1. Tap Win+R to bring up the Run dialogue box.
  2. Tap Enter after typing inetcpl.cpl.
  3. Go to General > Browsing History > Delete in the next section.
  4. Temporary Internet Files and Website Files, History, Download History, Form Data, Cookies and Website Data, Passwords, Tracking Protection, Do Not Track, and ActiveX Filtering is among the options available.
  5. Choose Delete.
  6. Restart the internet browser.

#4 Reset Internet Explorer

  1. Tap Win+R to bring up the Run dialogue box.
  2. Tap Enter after typing inetcpl.cpl.
  3. Go to Advanced > Reset in the next section.
  4. Select Delete Personal Settings Option > Reset from the drop-down menu.
  5. Your computer should be restarted.

How can I tell if my SSL certificate has expired in Google Chrome?

  1. In the address bar, click the Not Secure symbol.
  2. Select Certificate.
  3. The issuance and expiry dates of the SSL certificate can be found under the General tab.

How do I fix Google Chrome’s SEC ERROR EXPIRED CERTIFICATE error?

#1 Install Chrome:

  1. In Chrome’s menu (three dots in the upper right corner), select > Select About Google Chrome from the Help menu.
  2. Chrome should be updated and then restarted.

#2 Clear Chrome’s Data and Cache:

  1. Go to the Chrome menu and select Settings > Advanced > Privacy and Security from the drop-down menu.
  2. Select “Clear Browsing Data” from the drop-down menu.
  3. Select all of the options in the box, then select “Clear Data.”
  4. Check for the error by restarting your browser.

#3 Disable anti-virus and firewall (not advised):

Antivirus and firewall software protects websites from malicious attacks, but antivirus software can sometimes block legitimate websites and cause errors. It’s possible that turning off SSL scanning in your anti-virus software will help. If that doesn’t work, you can access the site by temporarily disabling both antivirus and firewall.

Don’t forget to enable these security features again later.

#4 Disable Chrome Extensions: 

  • Select “Extensions” from the Chrome menu, then “Settings.”
  • Disable each extension one by one in the extensions window and look for the error.
  • Remove the extension that’s causing the problem, and the error will go away.

#5 Double-check the Date and Time: 

As previously stated, the date and time must be correct to avoid errors. To avoid SSL connections being blocked by incorrect date and time, right-click the date and time icon in the lower right-hand corner of your computer and select “Adjust Date/Time.”

Both of these options should be updated, and Chrome should be restarted.

#6 Make use of the Command Prompt:

  • In the Start menu, type CMD, then TASKKILL /IM chrome.exe /F.
  • This will bring Chrome’s tasks to a halt. To check for errors, restart your browser.

#7 Delete the DNS cache:

  • The DNS cache sometimes causes SSL errors. In the address bar of your Chrome browser, type “chrome:/net-internals/#dns.”
  • Click the “Clear-Host Cache” button later.
  • This will clear the DNS cache, which may assist you in resolving the issue.

#8 Ignore the Error (this isn’t a good idea):

Continuing to use an unsecured website, i.e. one that displays errors during the loading process, poses a significant risk. If you are confident in the website’s authenticity, you can proceed, but keep in mind that your personal information is at risk.


I hope you found this information helpful. Please fill out the form below if you have any queries or comments.

User Questions:

What is Sec_error_expired_certificate?

When an SSL certificate expires, an error called Sec error expired certificate appears in Mozilla Firefox. The message “sec error expired certificate” appears, causing your current window to crash. The browser address bar displays a “Not Secure” message.

What should I do if I get a security certificate error message in Firefox?

  1. Perform the following actions:
  2. Click Or you can add an exception on the error page.
  3. Select Add Exception from the drop-down menu.
  4. Select Get Certificate from the drop-down menu.
  5. To view a window that describes the problem with your z/OSMF site, click View.
  6. Close the dialogue after you’ve verified the certificate.
  7. To trust the z/OSMF site, click Confirm Security Exception.

How do I resolve potential security issues that do not connect?

  1. In Mozilla Firefox, fix the “Secure Connection Failed” error.
  2. Continue Using a Risky Connection…
  3. Add the site to your trusted sites list… Turn off your antivirus and firewall for the time being.
  4. Clear Your Browsing History… Allow Firefox to Trust Root Authorities… Adjust Your Security Settings.

How do I fix the SEC_ error_ EXPIRED_ issuer_ certificate error code?

You can retrieve the certificate and look up information such as who issued it and when it expires. Allow Firefox to obtain the certificate: “Get Certificate” -> “Add Exception.” Examine the certificate and see who the issuer is by clicking the “View…” button.

What is the procedure for renewing my SSL certificate?

  1. Create a CSR. You’ll need to generate a new CSR to renew an SSL/TLS certificate.
  2. Go to your account and log in. Register for a CertCentral account.
  3. Complete the renewal form…
  4. DigiCert issues the SSL/TLS certificate…
  5. Reinstall your SSL/TLS certificate that has been renewed.

Why isn’t my certificate accepted?

The most common cause of a “certificate not trusted” error is that the certificate installed on the server (or servers) hosting the site was not completed properly. Install the intermediate certificate (or chain certificate) file on the server that hosts your website to solve this problem.

Why isn’t my connection safe?

What Does It Mean When It Says “Connection Is Not Secure”? When a browser cannot verify a website’s SSL certificate, it will return a “connection not secure” error. If a browser detects an issue with a site’s SSL certificate, it will refuse to load that site because it is potentially dangerous.

Why am I getting a secure connection failed message all the time?

As a result, Secure Connection The security certificate (also known as SSL) is usually not valid, expired, or simply missing, resulting in a failed error. This warning is frequently correct, as the browser is attempting to warn you that the connection is insecure and that proceeding could result in serious problems.

Why does Firefox claim that the connection is not secure?

Firefox considers websites that do not have encryption unsafe, and you will receive this warning. They’re usually caused by a website that isn’t configured properly, but you can double-check your date and time and clear your Firefox history to ensure it’s not on your end.

What is the procedure for disabling SSL verification?

To avoid SSL verification, prepend GIT SSL NO VERIFY=true before each git command. If you haven’t checked out the repository yet, this is especially useful. Run the command git config http. ssl If you’re working with a checked-out repository, set Verify false to disable SSL verification.


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