Hi, I have just set-up 2 new Hotmail accounts & checked them both etc & both are working perfectly through Outlook. I also have 2 old/existing Hotmail accounts that too are working perfectly through both Outlook & Thunderbird. All accounts are set-up in Thunderbird using POP3 using OAuth2 authentification for both POP3 & SMTP servers. Unfortunately, I am having trouble adding both the 2 new Hotmail accounts to Thunderbird. When adding an account & inputting "Name", "Email Address" & "Password" & then enter I receive the message in a green bar stating "Configuration found in Mozilla ISP database"............brilliant !!! I then select the "POP3" button & hit the box "Done" Normally, all would be accepted to which I would finally click on the box "Finish" & my account would be added. Instead, I now get an error message in a yellow box stating "Unable to log in at srver. Probably wrong configuration, username or password" ? These are 2 new Hotmail accounts I have only JUST set-up. The details entered are all correct & log me into Outlook with no problems & work perfectly sending & receiving. As for "Configuration" I just let Thunderbird set the POP3 settings as done with the 2 old/existing Hotmail accounts which go in perfectly through Thunderbird. Is there something causing this with new hotmail accounts ? Kind Regards Geoff