Do you experience the issuer certificate error “SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE” error in Firefox? If you see the error: SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE in Firefox, then Firefox tries to communicate through an expired security certificate. Most likely because the date and time settings on your device do not match.
Sometimes though you have to connect to the website, in this instruction I show you how to fix the SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE error in Firefox.
In this article, I will give you instructions on how to fix the SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE error in Firefox.
Read on and follow the step-by-step instructions.
How to fix SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE error in Mozilla Firefox
Check your date and time settings
Open windows control panel, go to Clock, Language, and Region.
Go to set time and date.
Open change date and time settings as Administrator.
Provide the correct date and time settings, restart Firefox for the changes to take effect.
Once the correct date and time settings are provided the SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE error in Firefox is fixed.
Bypass SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE firefox warning
When you are in the SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE Firefox error page. Click on Advanced, click on Add Exception and click on Get certificate.
Confirm the security exception and reload the page. Enjoy!