It can be annoying to encounter a 401 unauthorized error with Git-TFS version 0.34 when working in an AzureDevOps TFVC repository. Version 0.32, which asks for credentials correctly, does not have this problem. Using Python or PowerShell scripts to handle authentication is one way to find a solution. Another way to tackle the issue is to make sure that all relevant tools are up to date and look for any patches or known problems with version 0.34.