Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

• Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"

"Remove the Cookies" from sites causing problems:

• Tools > Options > Privacy > Cookies: "Show Cookies"

Thanks for your reply.

I did both - however it didn't solve the problem.

Richard

Try to clear the "Active Logins" via Delete browsing, search and download history on Firefox (Shift + Ctrl + Delete)

Hi,

Refresh my memory - where do I find "Active Logins" ?

Thanks

Richard

You can find it in Firefox > History > Clear Recent History or in Tools > Clear Recent History if the menu bar is visible (press F10).

See also https://support.mozilla.com/kb/Clear+Recent+History

Ok. Cleared the "Active Logins" too. Cleared everything.

Relaunched Firefox. Problem still persists. Had same error message and had to sign in again to get to my homepage.

Very annoying.

I do appreciate your help.

Richard

It is possible that there is a problem with the files sessionstore.js and sessionstore.bak in the Firefox Profile Folder.

Delete the files sessionstore.js and sessionstore.bak in the Firefox Profile Folder.

• Help > Troubleshooting Information > Profile Directory: Open Containing Folder
• http://kb.mozillazine.org/Profile_folder_-_Firefox
• http://kb.mozillazine.org/sessionstore.js

If you see files sessionstore-##.js with a number in the left part of the name like sessionstore-1.js then delete those as well.
Deleting sessionstore.js will cause App Tabs and Tab Groups to get lost, so you will have to create them again (make a note).

See:

• http://kb.mozillazine.org/Session_Restore

Deleted sessionstore and sessionstore.bak or at least I thought I did.

When I re-opened Firefox - the same sign-in problem was there.

When I looked under Help>Troubleshooting Information>Profile Directory sessionstore.js and sessionstore.bak had returned to the list of files.

Also, I didn't see http://kb.mozillazine.org/Profile_folder_-_Firefox

Richard