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

firefox 81.0.2 (64-bit) on windows 10 keeps signin out of sites

  • 6 replies
  • 1 has this problem
  • 9 views
  • Last reply by FredMcD

more options

Since a few days I noticed on two different windows 10 PCs that firefox keeps signin out of websites (yahoo, linkedin etc), and this happens semi-randomly but sometimes more than once per day. My security settings never changed, I did configure firefox to delete history when closing, but preserving cookies and active logins. I also tried to add those websites to trusted sites (in the tracking menu, the shield to the left of the url). Any advice?

Since a few days I noticed on two different windows 10 PCs that firefox keeps signin out of websites (yahoo, linkedin etc), and this happens semi-randomly but sometimes more than once per day. My security settings never changed, I did configure firefox to delete history when closing, but preserving cookies and active logins. I also tried to add those websites to trusted sites (in the tracking menu, the shield to the left of the url). Any advice?

Chosen solution

If cookies expire for no obvious reason then this might be caused by a new feature that causes cookies from unvisited websites to get cleared, especially if you cleared the history when you closed Firefox.

You can disable this feature via the about:config page.

  • privacy.purge_trackers.enabled = false

You can open the about:config page via the location/address bar. You can click the button to "Accept the Risk and Continue".

Read this answer in context 👍 1

All Replies (6)

more options

Were you finding the login issue when you restart the browser?


Your ‘logged-in’ status is stored in special cookies. If the cookie is removed, you are logged out.


You may be in Private Browsing mode or told Firefox not to remember.

Type about:preferences#privacy<enter> in the address bar. The button next to History, select Use Custom Settings.

Turn off Always Use Private Browsing Mode Turn on Remember My Browsing And Download History At the bottom of the page, turn on Clear History When Firefox Closes. At the far right, press the Settings button. Turn on ONLY Cache and Form And Search History leaving the others off.

more options

Chosen Solution

If cookies expire for no obvious reason then this might be caused by a new feature that causes cookies from unvisited websites to get cleared, especially if you cleared the history when you closed Firefox.

You can disable this feature via the about:config page.

  • privacy.purge_trackers.enabled = false

You can open the about:config page via the location/address bar. You can click the button to "Accept the Risk and Continue".

more options

cor-el said

If cookies expire for no obvious reason then this might be caused by a new feature that causes cookies from unvisited websites to get cleared, especially if you cleared the history when you closed Firefox. You can disable this feature via the about:config page.
  • privacy.purge_trackers.enabled = false
You can open the about:config page via the location/address bar. You can click the button to "Accept the Risk and Continue".

So far no more unwanted disconnections. This feature seems a bit messy because it can't differentiate between sites that I frequently visit and others. Also it seems unnecessary because afaik login cookies have a lifetime, so you're going to be signed out anyway after some time.

more options

It should work properly if you keep the history. When you clear the history then Firefox can't use this to decide what cookies to keep and if there is no history then it expires all cookies.

more options

Keep gettining loged out every 2-3 days since last update. Tried all advised solutions no luck. Dosen't bother me that much except for the repeated reminders to sync with another device that I'm already sync'd too (my android). Get it sorted Mozilla, you're way better than this. Forgot to add all my saved logins disapear.

Modified by Chris

more options

Chris Please go to the top of any support.mozilla.org web page and use the Get Community Support link: https://support.mozilla.org/en-US/questions/new

Select the product for what the problem is (Firefox or whatever). Now select the category for the problem. At the bottom is Other.

Describe the problem in brief (one line). Then press <enter>. The website will display any prior posts that might help you. If nothing on the list can help, at the bottom press the button; ’’'None Of These Solve My Problem.

Now enter all the relative information on the problem. At the bottom of this, you can Add Images.

Under this is Troubleshooting Information. Please press the Share Data button. This will let us look at your system details. No Personal Information Is Collected.