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Authentication failures with new Outlook email account

g0akc

Having established a new Outlook account I cannot sign into it properly with Thunderbird - I get authentication failures each time despite all settings apparently being correct, IMAP enabled in the web browser view of the outlook account and so on. Oauth2 set and all server settings good. I have been over and over things. Tried various suggestions of the web to no avail.

I have tried unsuccessfully with three separate machines - two Microsoft 11 laptops and an iMac. All fail.

I can access the account and send/receive emails from a web browser and I have got it working okay with an iPhone, an Android tablet and a Microsoft email client - but not with Thunderbird. I even get a browser popup on the iMac when I open Thunderbird asking if I am trying to sign in - I say yes and it says I am all signed in - but the email doesn't authenticate. I have passcodes all set up etc.

A separate Hotmail account does work with the same Thunderbird client and has the same server settings (apart from the username obviously).

I am at a loss how to resolve this other than move to a different email application.

Any ideas?

Having established a new Outlook account I cannot sign into it properly with Thunderbird - I get authentication failures each time despite all settings apparently being correct, IMAP enabled in the web browser view of the outlook account and so on. Oauth2 set and all server settings good. I have been over and over things. Tried various suggestions of the web to no avail. I have tried unsuccessfully with three separate machines - two Microsoft 11 laptops and an iMac. All fail. I can access the account and send/receive emails from a web browser and I have got it working okay with an iPhone, an Android tablet and a Microsoft email client - but not with Thunderbird. I even get a browser popup on the iMac when I open Thunderbird asking if I am trying to sign in - I say yes and it says I am all signed in - but the email doesn't authenticate. I have passcodes all set up etc. A separate Hotmail account ''does ''work with the same Thunderbird client and has the same server settings (apart from the username obviously). I am at a loss how to resolve this other than move to a different email application. Any ideas?

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I tried again today. Tried various supposed fixes including various browser related settings in the Thunderbird config. Tried settings things manually using the Microsoft Office 365 EWS options with service URL https://outlook.office365.com/EWS/Exchange.asmx

Tried both EWS and Microsoft Graph options.

Both fail to authenticate. They go through the motions, bring up a dialogue box in a browser where I submit my PIN and so on, but no authentication.

I have tried on machines where another (hotmail account) is working okay and a machine where there is no other Microsoft email account set up (no other Thunderbird email account anyway).

I can use both Apple Mail (with the MS Exchange option) on iMac and the MS Outlook mail apps anyway - so I will just use those instead of Thunderbird, for now at least.

I would still like to hear of any solutions....

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