Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

For one site only, I get an Peer Certificate error of Error code: sec_error_bad_signature. what to DO?

  • 1 ŋuɖoɖo
  • 27 masɔmasɔ sia le wosi
  • 1 view
  • Nuɖoɖo mlɔetɔ cor-el

more options

After using desktop cleaners I am having this error for banking and paypal. All money problems. I tried changing the proxy settings. Other fixes as well, but I'm not getting anywhere. I have the latest version of Firefox, and have windows 8.

After using desktop cleaners I am having this error for banking and paypal. All money problems. I tried changing the proxy settings. Other fixes as well, but I'm not getting anywhere. I have the latest version of Firefox, and have windows 8.

All Replies (1)

more options

Check the connection settings.

If you do not need to use a proxy to connect to internet then try to select "No Proxy" if "Use the system proxy settings" or one of the others do not work properly.

See "Firefox connection settings":


Try to rename the cert8.db file in the Firefox profile folder to cert8.db.old or delete the cert8.db file to remove intermediate certificates that Firefox has stored.

If that helped to solve the problem then you can remove the renamed cert8.db.old file. Otherwise you can rename (or copy) the cert8.db.old file to cert8.db to restore the previous intermediate certificates. Firefox will automatically store intermediate certificates when you visit websites that send such a certificate.

If that didn't help then remove or rename secmod.db (secmod.db.old) as well.


Create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

If the new profile works then you can transfer some files from an existing profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem.