Are you trying to browse the internet using Firefox, but are you getting the error message 'sec_error_expired_issuer_certificate'?
Firefox is a web browser that was developed by Mozilla. It was released on September 23, 2002 for Microsoft Windows, Linux and Mac OS X. It can be used to access the internet and it can be used to access websites and search engines.
Firefox is the most popular web browser in the world. It is one of the most popular browsers in all of the different operating systems. Firefox has several features that make it an ideal web browser for everyday use. It has an extension manager, a built-in PDF viewer, password manager, bookmarks manager, download manager and much more.
On this page, you will find more information about the most common causes and most relevant solutions for the Firefox error 'sec_error_expired_issuer_certificate'. Do you need help straight away? Visit our support page.
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It has never been easier to solve error "sec_error_expired_issuer_certificate".
View list of solutions Contact an expertError information
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Category
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Error codesec_error_expired_issuer_certificate
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ProductFirefox
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DeveloperMozilla Foundation
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Operating systemWindows 10, Windows 8, Windows 7, Windows Vista, Windows XP
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PlatformPC
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First seenJuly 25, 2021
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Verified-
How to solve Firefox error sec_error_expired_issuer_certificate
We've created a list of solutions which you can follow if you want to solve this Firefox problem yourself. Do you need more help? Visit our support page if you need professional support with Firefox right away.
Verified solution
If you are having issues with Firefox then you might encounter the error code Sec_Error_Expired_Issuer_Certificate when you try to access your account information or when you try to log into your account on Firefox. This error can occur when your security certificate expires or when it gets invalidated by Mozilla Corporation because of some changes made by them in their system. This error can be annoying and frustrating because you cannot access your account properly or you cannot log into your account on Firefox anymore.
The problem can be caused by a server error or a network error but sometimes other applications are interfering with the proper functioning of Firefox on your computer. This can be caused by a virus or a malware that is installed on your computer. To fix this error, you need to try a few solutions.
First of all, the most common cause of this error is that the security certificate on your account has expired. So, keep all 128 bit SSL3 ciphers disabled. This is because some SSL3 ciphers are less secure than others. Also, keep all 128 bit ciphers enabled for security.ssl3.rsa_rc4_128_md5 or security.ssl3.rsa_rc4_128_sha.
Another solution is to update your time zone to one that is compatible with the current time zone. To do this, go to your settings menu and select Date and Time > Adjust Date/Time. Click on the Set Time Automatically > Add Clocks for Different Time Zones Internet Time > Change Settings and enable the Synchronize with an Internet Time Server option. After that, select time.windows.com and click on the Update Now button.
Finally, you can configure the security settings on Firefox. To do this open the Command Prompt by pressing the Windows Key + X and then type in Command Prompt (Admin) and press Enter. In the command prompt, type in the following commands after "C:WINDOWSsystem32>":
regsvr32 softpub.dll
Regsvr32 Wintrust.dll
Regsvr32 Wintrust.dll
Then, restart Firefox.
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