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

USPS will not allow sign in. Works fine in other browsers. Did all the normal stuff. Clear cache, like they ask, etc.

  • 4 tontu
  • 1 am na jafe-jafe bii
  • 1 view
  • i mujjee tontu mooy cor-el

more options

It claims to be the cache, but I've cleared it, cookies, history, ad nausea. Actually there are a lot of sites that report incorrect ID or password, just won't sign in, etc. And I'm certain the sign in info is correct. Some sites lock down your account after several failed sign in's. No problem in other browsers. The simple answer is to use other browsers, but firefox still has a few things making life simple that are a real headache in other browsers.

It claims to be the cache, but I've cleared it, cookies, history, ad nausea. Actually there are a lot of sites that report incorrect ID or password, just won't sign in, etc. And I'm certain the sign in info is correct. Some sites lock down your account after several failed sign in's. No problem in other browsers. The simple answer is to use other browsers, but firefox still has a few things making life simple that are a real headache in other browsers.

All Replies (4)

more options

uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files and C:\Program Files(x86) Then restart system. Then run Windows Disk Cleanup. (Note: This should be Pinned and run Weekly, If never done below expect 10's of gig's) Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. But you should make a back up before you do : https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer

Reinstall with Current Release Firefox 57.0.2 with a Full Version Installer https://www.mozilla.org/firefox/all/

Please let us know if this solved your issue or if need further assistance.

more options

You seem to have a lot of passwords related extensions. Did you check that one of those isn't causing this issue?


Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window
more options

I thought the advise was excellent being and I am a software and computer repair expert. Did exactly as suggested, and new fresh firefox was a nightmare. Everything was broke.

Truth is, you folks have just severely broken firefox. I spent 6 hours today troubleshooting it. Stripping it bare, loading and unloading add-ons one at a time. I must have tried 400 different combinations of solution attempts on 5-8 different web sites. Trouble is on every page something different is causing some problem. Appears Ghostery is incompatible with a dozen sites on or off, disable is only thing that will fix some sites. Can't sign in to Ghostery site under any conditions to tell them they are broken too... at least with firefox, works fine everywhere else. Literally every site I had pinned (5) I could not sign in without some tinkering... after reinstall - and different with each site gmail, yahoo, aol.

Love Mozilla, contributed many times. I hope you decide to go back to about 54 or 55, maybe earlier and rethink all you did. I can't use it anymore. It is just too broken in too many ways. It is like pre-alpha software it seems. Good luck. I'll be reading news to see if you recover. I do appreciate all the hard work over the years and I do hope I'm an isolated case maybe running some software that is messing with firefox. If not, I hope you get it fixed soon.

more options

Are you returned to the login page or do you see a message that username or password are not correct?

This is usually a problem with cookies that are either corrupted or blocked.

Do you get such errors often since this shouldn't happen?

You can try "Forget About This Site" if clearing cookies and cache doesn't help. You can also try a New Private Window (this gives you a separate cookie jar). Also make sure that if you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block (wanted) content (e.g. Adblock Plus, NoScript, Ghostery, uBlock Origin) that such extensions do not block (wanted) content.

  • make sure your extensions and filters are updated to the latest version

See also:

You can remove all data stored in Firefox from a specific domain via "Forget About This Site" in the right-click context menu of an history entry ("History -> Show All History" or "View -> Sidebar -> History").

Using "Forget About This Site" will remove all data stored in Firefox from that domain like bookmarks and history and cookies and passwords and cache and exceptions, so be cautious. If you have a password or other data from that domain that you do not want to lose then make sure to backup this data or make a note.

You can't recover from this 'forget' unless you have a backup of involved files.

If you revisit a 'forgotten' website then data from that website will be saved once again.