Firefox error code sec_error_bad_signature

What is Firefox error code sec_error_bad_signature?

Firefox error code sec_error_bad_signature is an error that usually occurs when the user’s Firefox browser is not properly configured.

 

How can you fix Firefox error code sec_error_bad_signature?

Some of the solutions to this error include clearing the recent history, disabling HTTPS scanning, and deleting the Firefox subfile cert8.db.

 

Please see our in-depth walk-through solutions below.

Staff Asked on October 18, 2017 in Firefox.
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3 Solution(s)

Solution 1. Clear Recent History

“Firefox error code sec_error_bad_signature” may be caused by caches or cookies. Please delete them. Instructions are provided below.

  1. Open Mozilla Firefox, then hold Ctrl + Shift + Delete.

    RE: Firefox error code sec_error_bad_signature

  2. When prompted, select “Everything” in the drop box.
  3. Check all checkbox, and then click Clear Now button.
  4. Restart Mozilla Firefox and try again.
Staff Answered on November 20, 2017.
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Solution 2. Disable HTTPS Scanning

“Firefox error code sec_error_bad_signature” may appear when an anti-virus is interrupting the process. You may want to disable the HTTPS scanning of your anti-virus. Or, disable the anti-virus temporarily.

  1. Open your anti-virus.
  2. Look for an Enable HTTPS Scanning, disable it.

    RE: Firefox error code sec_error_bad_signature

  3. Then disable Antivirus Firewall.
  4. Try again.
  5. If this does not work, disable your anti-virus.
  6. Try again.
Staff Answered on November 20, 2017.
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Solution 3. Delete Firefox subfile “cert8.db”

“Firefox error code sec_error_bad_signature” may be caused by the Firefox subfile “cert8.db.” The subfile may be blocking the site. To fix the error, you may want to rename or delete it. Please see below how to access the file.

  1. Open Mozilla Firefox.
  2. At the Address bar type in “about:support” and press Enter key.

    RE: Firefox error code sec_error_bad_signature

  3. Click the “Open Folder” button.
  4. A window folder will open, look for cert8.db.
  5. You may delete it or rename it.
  6. Then try Mozilla Firefox again.
Staff Answered on November 20, 2017.
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