We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

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

Adding Gmail Account to Thunderbird NOT Working

firefox.o9y91
firefox.o9y91
more options

I've tried to confirgure my Gmail account to Thunderbird multiple times recently, but not successfully getting it figured out. I'm always given a 400 error message and I can't figure out the root cause. I've updated and redownloaded TB and reset my Gmail password.

I've included screenshots to verify what I've got currently setup in TB and my Gmail settings. Anyone have this problem or have the solution? I have 3 other mail accounts that are not hosted by Google that work fine.

I've tried to confirgure my Gmail account to Thunderbird multiple times recently, but not successfully getting it figured out. I'm always given a 400 error message and I can't figure out the root cause. I've updated and redownloaded TB and reset my Gmail password. I've included screenshots to verify what I've got currently setup in TB and my Gmail settings. Anyone have this problem or have the solution? I have 3 other mail accounts that are not hosted by Google that work fine.
Attached screenshots

Chosen solution

Are cookies accepted in TB Settings (not browser settings)? It's necessary for OAuth2. Or, using a VPN?

Read this answer in context 👍 0

All Replies (2)

sfhowes
sfhowes
  • Top 10 Contributor
more options

Chosen Solution

Are cookies accepted in TB Settings (not browser settings)? It's necessary for OAuth2. Or, using a VPN?

Helpful?

firefox.o9y91
firefox.o9y91 Question owner
more options

For those wondering, it seemed to have been that my TB cookies were off. This was the problem.

Helpful?

Ask a question

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.