Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Firefox either displays a stripped down version of sites or returns sec_error_bad_signature

  • 3 replies
  • 6 have this problem
  • 11 views
  • Last reply by FredMcD

Bushdog
Bushdog
more options

I'd asked someone to delete cache and instead of doing that through options, I think they just deleted a bunch of Mozilla related folders. I've since done a clean reinstall but something's still missing.

Most sites now turn up with the formatting stripped down to the text and the rest throw that sec_error_bad_signature error. Everything's normal in Chrome.

Firefox displays the url-less home page and new tab page fine, for whatever that's worth.

Thanks for your time

I'd asked someone to delete cache and instead of doing that through options, I think they just deleted a bunch of Mozilla related folders. I've since done a clean reinstall but something's still missing. Most sites now turn up with the formatting stripped down to the text and the rest throw that sec_error_bad_signature error. Everything's normal in Chrome. Firefox displays the url-less home page and new tab page fine, for whatever that's worth. Thanks for your time
Attached screenshots

Chosen solution

hi, in case you're an avast user please disable https scanning within avast, since it's known to cause various problems:

  1. Open the Avast dashboard on the affected system.
  2. Select Settings from the left sidebar menu.
  3. Switch to Active Protection.
  4. Click on Customize next to Web Shield.
  5. Uncheck the "Enable HTTPS Scanning" option and click ok.

http://www.ghacks.net/2014/10/31/avasts-https-scanning-interferes-with-firefox-and-other-programs/

Read this answer in context 👍 3

All Replies (3)

philipp
philipp
  • Moderator
more options

Chosen Solution

hi, in case you're an avast user please disable https scanning within avast, since it's known to cause various problems:

  1. Open the Avast dashboard on the affected system.
  2. Select Settings from the left sidebar menu.
  3. Switch to Active Protection.
  4. Click on Customize next to Web Shield.
  5. Uncheck the "Enable HTTPS Scanning" option and click ok.

http://www.ghacks.net/2014/10/31/avasts-https-scanning-interferes-with-firefox-and-other-programs/

Bushdog
Bushdog Question owner
more options

Oh geez, that worked perfectly. Feel silly I skipped over those instructions before, assuming that since I hadn't changed versions, Avast wouldn't mess with the reinstall. Whoops.

Thank you so much!

FredMcD
FredMcD
more options

Hello,

I am glad to hear that your problem has been resolved. If you haven't already, please select the answer that solves the problem. This will help other users with similar problems find the solution more easily.

Thank you for contacting Mozilla Support.