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

Outlook.com changes to OAUTH2

more options

I tried changing the authentication method to OAUTH2 for my Outlook live mail account (POP). For that, I had to change the server name to office365.com. After restarting Thunderbird, I was able to download new messages but all the old messages already stored in Thunderbird disappeared, even though Thunderbird still shows the same old Local Directory as being used.

How do I change the authentication to OAUTH2 & get my old messages back?

If I delete & again create the Outlook live account, would it effect my old mails/filters ?

I tried changing the authentication method to OAUTH2 for my Outlook live mail account (POP). For that, I had to change the server name to office365.com. After restarting Thunderbird, I was able to download new messages but all the old messages already stored in Thunderbird disappeared, even though Thunderbird still shows the same old Local Directory as being used. How do I change the authentication to OAUTH2 & get my old messages back? If I delete & again create the Outlook live account, would it effect my old mails/filters ?

All Replies (6)

more options

I'm not sure if this is the cause but the Server Name I use is outlook.office365.com and have had no problems. The Port should be 995 for POP too.

Modified by ThePillenwerfer

Helpful?

more options

I can receive the messages but my older messages have disappeared. Since I have 15+ years of messages stored, I can't risk them. What happens to the filters I have created? I have 30+ filters currently !

Helpful?

more options

what local folder? I thought the folder name on disk followed the server name.

Helpful?

more options

Maybe but in my case the folders are Mail\localhost-1 Mail\localhost-2 & so on and Mail\pop3.live-2.com etc.

If I change the incoming POP sever name, the Local Directory is still being shown as the old one but all my old messages in Inbox have disappeared.

Helpful?

more options

There is some sort of problem here. I do not know what it is. But you should not have server folders with localhost in the name as there is no mail hosted on localhost, unless you are using some sort of specialized software on your system such as is used by proton mail paid version

See https://en.wikipedia.org/wiki/Localhost

Helpful?

more options

Maybe Mozilla changed something down the line but I have been using Thunderbird for more than 15 years & that's the way its setup. I didn't manually change anything. Since I am using POP, the mails are downloaded and stored on my local computer. So Thunderbird could have been referring that as localhost to mean that these are stored on my local computer (hence localhost). I am not using any other software other than Thunderbird as my email client.

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.