I cannot log in to Twitter in Firefox.
I know a lot of people have been having this problem, but I wanted to ask as many of the solutions do not apply to my situation. In other responses users have been advised to clear the cache or cookies. I have had this problem since updating Firefox on my previous laptop, but am now using a brand new computer and the problem persists. When I try to login in Firefox I am told that the username and password do not match. However, when I try on other browsers or devices I have no problem. Is there any solution to this?
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This issue can be caused by corrupted cookies or cookies that are blocked.
- check the permissions on the about:permissions page and in "Tools > Page Info > Permissions"
- https://support.mozilla.org/kb/fix-login-issues-on-websites-require-passwords
Clear the cache and remove cookies only from websites that cause problems.
"Clear the Cache":
- Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"
"Remove Cookies" from sites causing problems:
- Firefox/Tools > Options > Privacy > "Use custom settings for history" > Cookies: "Show Cookies"
If clearing cookies didn't help then it is possible that the cookies.sqlite file that stores the cookies got corrupted.
- Rename (or delete) cookies.sqlite (cookies.sqlite.old) and delete other present cookies files like cookies.sqlite-journal in the Firefox profile folder in case the file cookies.sqlite got corrupted.
You can use this button to go to the currently used Firefox profile folder:
- Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)
- http://kb.mozillazine.org/Profile_folder_-_Firefox
You can also check for for issues caused by security software.
Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test.