Incorrect login credentials or method

[Felix Göller]

"Fatal: ArgumentException encountered.
remote: Login failed due to incorrect login credentials or method.
remote: If you are unsure of which login details or login method to use, visit:
remote: https://support.atlassian.com/bitbucket-cloud/docs/log-into-or-connect-to-bitbucket-cloud/" 

Whenever I try to clone anything from Bitbucket, i get this error in Sourcetree, even tho my login credentials are correct. I tried cloning with my account on another PC, which worked just fine. I tried deleting every file connected with Sourcetree, nothing helped. The problem only occurs on my SSD, with accounts of colleagues as well.

[Ben]

G'day Felix! 

Thank you for contacting Bitbucket Cloud Support.

The most common issue customers are experiencing related to authentication in SourceTree is due to the deprecation of GIT username/password in favour of App Passwords:
https://bitbucket.org/blog/deprecating-atlassian-account-password-for-git-and-bitbucket-api-activity
We have a blog post however which explains the steps to troubleshoot this issue, please follow these accordingly and this should resolve the issue:
https://community.atlassian.com/t5/Sourcetree-articles/Bug-Fix-Sourcetree-for-Windows-authentication-error-when/ba-p/1965968 

Cheers!

- Ben (Bitbucket Cloud Support)