
Solution 3: Delete Internet Explorer History
Every time you tap Enter, you’ll receive a dialog box and you’ll have to click on OK. After the ‘ C:\WINDOWS\system32>’ message, write down the following commands - ‘ regsvr32 softpub.dll’, ‘ Regsvr32 Wintrust.dll’, and ‘ Regsvr32 Wintrust.dll’. Select Run as Administrator and then select Yes for the command prompt. In the Cortana search box, right click on ‘ Command Prompt’. You can also configure your security settings to solve the sec_error_expired_certificate Firefox issue. Tick the ‘ Synchronize with an Internet Time Server’ option, select ‘ ‘ and click on ‘ Update Now’. In the next window, click on Internet Time > Change Settings. Click on ‘ Add Clocks for Different Time Zones’. In the settings page, go to the option called ‘ Set Time Automatically’ and toggle it on. In the Mozilla Firefox taskbar, click on Date and Time > Adjust Date/Time. You can solve the sec_error_expired_certificate issue by following these steps: Incorrect Date & Time configuration often leads to a number of connectivity issues. Solution 1: Update your System Date & Time If you frequently suffer from the sec_error_expired_certificate Mozilla Firefox message, then one of the following solutions may help you out. How to Fix SEC_ERROR_EXPIRED_CERTIFICATE Firefox? You may also receive a message that reads “Warning: Potential Security Risk Ahead” or “Your Connection is Not Private.”. You receive a “ Not Secure” message in the browser address bar. The “ sec_error_expired_certificate” message appears and crashes your current window. During this error, you may experience the following issues: Sec_error_expired_certificate is an error that usually occurs in Mozilla Firefox when an SSL certificate gets expired. In this article, we discuss what the “ sec_error_expired_certificate” error is, how to fix it, and how to confirm if your SSL is expired so you can avoid the “sec_error_expired_certificate” error altogether. Are you considering renewing your SSL certificate? If you don’t renew your SSL in time, you may end up with the “sec_error_expired_certificate” Firefox error.