Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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
Archived

Authentication failed

domenico4

Hello,

I am having problems with one of my email accounts and I get this message: Authentication failed while connecting to the imap.gmail.com server I tried to remove the account and add it again checking carefully all the gmail details that are correct but when I try to activate I get message that something is wrong with nickname password or email address. I repeat everything is correct and I don't really understand why I can't connect thia account anymore. It was warking good for few years but saddenly yesterday It was not working anymore! Can you please assist?

Thank you in advance

Hello, I am having problems with one of my email accounts and I get this message: Authentication failed while connecting to the imap.gmail.com server I tried to remove the account and add it again checking carefully all the gmail details that are correct but when I try to activate I get message that something is wrong with nickname password or email address. I repeat everything is correct and I don't really understand why I can't connect thia account anymore. It was warking good for few years but saddenly yesterday It was not working anymore! Can you please assist? Thank you in advance
Attached screenshots

All Replies (1)

Hai seguito questa guida? https://support.mozilla.org/it/kb/thunderbird-gmail

Sul dominio personalizzato hai abilitato l'accesso da client?