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Certificate problem with Firefox 4.01 and Windows 7 (Win XP is working fine)

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  • 17 have this problem
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  • Last reply by elmarc69

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When I try to connect to an https page with a valid certificate, Firefox 4 shows me "sec_error_bad_signature" error message... but only in Windows 7 OS. If I try the same in a Windows XP it works correctly. Any suggestions?

When I try to connect to an https page with a valid certificate, Firefox 4 shows me "sec_error_bad_signature" error message... but only in Windows 7 OS. If I try the same in a Windows XP it works correctly. Any suggestions?

All Replies (6)

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You may have an expired VeriSign (VeriSign, Inc.) certificate.

You can check that in the Certificate Manager.

  • Tools > Options > Advanced : Encryption: Certificates - View Certificates

Stored intermediate certificates show as "Software Security Device" in the "Security Device" column in the Certificate Manager.

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thanks for your answer but the VeriSign certificate is correct:

SSL CERTIFICATE STATUS: Valid (Jan 14, 2009 to Mar 14, 2012)

I have this problem with Windows 7 and Windows Server 2008. Why is it working on win XP?

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Check the date and time in the clock on your computer: (double) click the clock icon on the Windows Taskbar.

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thanks again, the time is correct in guest OS and server OS. I'm geting crazy!

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Try to rename the file cert8.db to cert8.db.old in the Firefox Profile Folder to remove all intermediate certificates that Firefox has stored by visiting secure websites.

Help > Troubleshooting Information > Profile Directory: Open Containing Folder

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I renamed the cert8.db but the problem is still there. It happens the same with Firefox 5. I think the problem is the verisign certificate of the site (other site's with https connections are working well) but I don't know where is this problem exactly.