SyntaxFix

[git] Authentication failed for https://xxx.visualstudio.com/DefaultCollection/_git/project

I had this problem and the instructions from a tech at Microsoft fixed it for me:

  • Close all instances of Visual Studio.
  • Open the Task Manager and check if any TFS Services are running. Select each of them and click on End Process Tree.
  • Browse to the folder below and delete all the contents and folders in %LocalAppData%\Microsoft\Team Foundation{version}\Cache
  • Go to Control Panel -> User Accounts -> Manage your Credential -> Windows Credential, select the VSTS URL to remove it
  • Then go to "C:\Users\USER NAME\AppData\Local\GitCredentialManager\tenant.cache" and delete it
  • Also go to "C:\Users\USER NAME\AppData\Local.IdentityService" and delete it

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