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Having authentication problem with thunderbird when it tries to get office 365 outlook email. It says it has a problem but not how to fix it. I use OAuth2.

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Having authentication problem with thunderbird when it tries to get office 365 outlook email. It says it has a problem but not how to fix it. I use OAuth2.

Having authentication problem with thunderbird when it tries to get office 365 outlook email. It says it has a problem but not how to fix it. I use OAuth2.

All Replies (8)

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My perception is that Office365 exists with several varieties. I think you may get a useful response if you provide more information on your account, such as Exchange or IMAP, and what your server settings are. Thank you.

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Thank you David, Here is the additional info: Server: outlook.office365.com Port 993 Connection security: SSL/TLS Authentication Method: OAuth2 Not IMAP Outgoing server: smtp.office365.com

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Try port 995 for incoming Use port 587 and STARTTLS for SMTP server. Let us know if it works.

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It did not work - I had the port 587 and Startttls. Port 995 did not do it. The last email I got was on July 12th. Not sure what happened that day.

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Do I need an IMAP server directory? Not sure what that is. Right now it is blank.

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No, not needed for a POP account. Are you receiving error on retrieval or sending? What is the exact error message? Who is the email provider?

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here is the error message: authentication failure when connecting to outlook.office 365.com

What is weird is that on my laptop, I get the outlook emails. I checked the server settings and on the laptop, the server setting is normal password - this fixed the problem. Thanks for helping Andy

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Hi kadak: Sorry but it's not 100% clear what your exact issue is here.

1. POP with normal password is working on your laptop ; let's call this "COMPUTER1".

2. Reading between the lines, you have another computer where it doesn't work and that computer let's call it "COMPUTER2" is set to oauth and POP?

If 2. is correct, then please set COMPUTER2 to normal password and POP, ie. please copy the settings from COMPUTER1 to COMPUTER2. And hopefully that will cause COMPUTER2 to work.

Cheers!

...Roland