for a few days now (cannot tell the exact time) i get an error when i try pushing a local repo to Gitlab with ‘git push -u origin master’.

For authentification we use a Token.
(With my personal username/password it works, but I need it be called from a C# application using a specific token)

It worked without a problem for months (with the token), but currently i get the error
“remote: HTTP Basic: Access denied. The provided password or token is incorrect or your account has 2FA enabled and you must use a personal access token instead of a password”

If i try to push from my C# application using libGit2Sharp, i get the error code 500.

On our Git system i created an access token (Settings – Access Tokens).
Role: Maintainer
Scopes: api, read_api, read_repository, write_repositry.
I even tried “Owner” and checked all scopes.
The error remains.

The only thing which was changed on our Git system was that non-expiring Tokens are not longer allowed.

Does anyone have an idea what could cause this problem?

Thanks a lot!