My computer/firefox is reading valid security certificates as invalid and expired?

How do I fix this? I think I might have picked up a virus or something that has made my computer or browser read valid security certificates as expired:

The certificate is not trusted because the issuer certificate has expired.
The certificate expired on 06/05/2011 00:59.

(Error code: sec_error_expired_issuer_certificate)

The certificates are obviously valid. The one above until 2011.
I’m finding myself have to manually make exceptions for every page I visit.

Can anyone help me?

5 replies
  1. Gary V says:

    Is your system clock right? These kind of glitches happen when your system time is set far in the future.

    If that’s not the case, you may have to a virus you need to destroy.

    I recommend you install a new antivirus program, after uninstalling whatever antivirus program you have.

    If it’s a small virus, I would get Avast Antivirus, the home free edition. After you install it, updated it, schedule a boot time scan. It should automatically ask you to do this.

    If it’s a more serious infection, and you need a heavy-duty antivirus program, get Eset Nod32. It costs $40 a year, but there is 30-day free trial with the full version. You can use the free trial to clean your computer, then you can replace it withe the free Avast Antivirus.


  2. mr.dfleming57 says:

    Firefox security runs high. They make the guide lines for ” What they think is valid “. And pass it on to you. If you dont agree with ” their ” guidelines, you have the options and risks. I personaly think even the if the certificate is good, they may not be ” reputable ” They might be running on old security measures, bad equipment, or even in doubt.

  3. dinongdaclown says:

    This is probably a stupid question (from me), have you checked your system time if it’s correct? I got that error once because my cmos battery died so my default system clock was 1/1/19xx. HTH.

  4. Larry W says:

    You might want to check your clock setting. It seems it’s been moved up a year, from 2010 to 2011.

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