Usually you have to clear your Google cookies when this happens.

I assume you can open a page on www.google.com.

Save any pending work (if any), then open the View Cookies dialog using either:

• right-click the page and choose View Page Info > Security > "View Cookies"
• Alt+t (open the classic Tools menu) > Page Info > Security > "View Cookies"

In the dialog that opens, you can remove all google.com cookies without affecting other sites.

Then try going back to Gmail. Can you log in?

Note: Many users have recently become more aware of privacy and either made changes to their cookie settings or installed extensions that stop some information from reaching websites. While this reduces tracking, it also can cause some site functions to break.

This is especially true when a site uses multiple domains (e.g., switching between mail.google.com and accounts.google.com). In that situation, you probably need to accept "third party" cookies.

Worked like a charm! Thanks so much.

Allen

Deleting the cookies didn't work, using custom settings for history slowed Firefox to a crawl. This is a serious problem, since I've been using gmail for over 10 years. It's only on Firefox, so the problem isn't the page but Firefox. People will drop Firefox if you don't resolve this issue (by using GoogleChrome, or Opera, or even Internet Virus Catcher, I mean Explorer), so get off your Asperger's "It's not standard compliant" anal retentivity and fix it so ie six pack can get his gmail without jumping through hoops!

Hi larkguit, I can't tell whether you want a response, but if you do, please start a new question and include your system information (the forum will push an extension to you to make it easier to submit).

You can start here:

https://support.mozilla.org/questions/new/desktop/fix-problems

If the suggested articles are not useful, please scroll down to continue with the question submission form.

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

What are you current cookie settings?

• Tools > Options > Privacy > Firefox will: "Use custom settings for history"

If you use the 'Ask me' setting then try to allow cookies generally (possibly third-party cookies from visited websites).

You can inspect and manage permissions for the domain in the currently selected tab via these steps:

• Click the "Site Identity Button" (globe/padlock) on the location/address bar
• Click "More Information" to open "Tools > Page Info" with the Security tab selected
• Go to the Permissions tab (Tools > Page Info > Permissions) to check the permissions for the domain in the currently selected tab

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") or via the about:permissions page.

Using "Forget About This Site" will remove all data stored in Firefox from that domain like bookmarks, cookies, passwords, cache, history, and exceptions, so be cautious and 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 the involved files.

It doesn't have any lasting effect, so if you revisit such a 'forgotten' website then data from that website will be saved once again.