Ubuntu – Gmail login failure on Thunderbird

gmail

I am attempting to login to a gmail account on Thunderbird but I keep getting the following message:

Authentication Failure while connection to server imap.gmail.com

I have changed the related application password 5 times with no change in behavior. But if I use the web gmail the password changed and I can read my email. At present I can not read, download, or save my email with Thunderbird.
I have two other email accounts but they are not affected.
Any idea what is going on here?

Best Answer

I was able to solve this issue by changing the following setting general.useragent.compatMode.firefox to true (found in Edit/Preferences/Advanced/General/Config Editor).

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