Curious, were or are you a Rogers or Shaw customer? ~r

none im european

I tried all the methods in Mozilla's "OAuth2 Authentication for Yahoo, AOL and ATT" support webpage but kept getting "Something went wrong. We could not sign you in. Try again from a different device." error. Finally was able to get access to my Yahoo email account in both Firefox & Thunderbird by turning off Privacy Badger & uBlock Origin for yahoo.com in Firefox. After disabling ad blocking in Firefox, I was able to log in to Yahoo in Firefox, and then separately in Thunderbird (going through two factor authentication in both).

If you have not yet been successful, please tell us: 1. With the password that failed with Thunderbird, can you log into the account(s) using the mail provider’s web interface (webmail)? (Note: you must use the account password, not an "app password" that was created by Yahoo) 2. What are the full domain name(s) of all the affected account(s)? (for example yahoo.co.uk) 3. Are cookies enabled in Thunderbird at Settings > Privacy & Security > "Accept cookies from sites …" 4. Are you able to login using Thunderbird after you do the following?

• At the top right of the Thunderbird window, click the menu button ≡ > Settings > Config Editor
• find mailnews.oauth.usePrivateBrowser (screen shot below - you can paste it into the search field)
• click the two-headed arrow icon to toggle false to true
• restart Thunderbird (make sure it has fully shut down before starting it up)
• retry the login

Report back if you were not successful after step 4 …

Hi @christ1: I am experiencing the same issue; two pop ups, one is @verizon.net and the other is @aol.com. I believe that those two are from the same equipment (i.e., aol servers).

I have toggled mailnews.oauth in the config editor to true; the problems persists. Any other suggestions? These popups are indeed annoying ~!~

TNX VinceB.

Hi @christ1: I am experiencing the same issue; two pop ups, one is @verizon.net and the other is @aol.com. I believe that those two are from the same equipment (i.e., aol servers). I have toggled mailnews.oauth in the config editor to true; the problems persists. Any other suggestions? These popups are indeed annoying ~!~ TNX VinceB.

VinceB, if you are still having difficulty after using https://support.mozilla.org/en-US/kb/thunderbird-and-yahoo it may be best to post your own question https://support.mozilla.org/en-US/questions/new/thunderbird

UPDATE: Decided to try again today and finally i got the verification code method sent to another email and managed to login. After verification yahoo also asked me for thunderbird access. so for now it works. Also i dont know if this has something to do but at the same time before trying thunderbird i first opened edge to login to yahoo

study-speller-grub, so you are good after addressing the verification? Were you not getting the verification initially?

I tried all the methods in Mozilla's "OAuth2 Authentication for Yahoo, AOL and ATT" support webpage but kept getting "Something went wrong. We could not sign you in. Try again from a different device." error. Finally was able to get access to my Yahoo email account in both Firefox & Thunderbird by turning off Privacy Badger & uBlock Origin for yahoo.com in Firefox. After disabling ad blocking in Firefox, I was able to log in to Yahoo in Firefox, and then separately in Thunderbird (going through two factor authentication in both).

jwsteggall, so you also were bit by two factor?