Provider configuration for Azure Stack Hub fails with error "Authentication failed: invalid_instance"
Provider configuration for Azure Stack Hub fails if the Authentication type is AAD and the optional parameter Authentication Resource URL is provided. The configuration fails with the error message: Authentication failed: invalid_instance.
This issue is a known issue with the Azure Stack Hub API. It is expected to be fixed in the near future.
Workaround:
Do not use the optional parameter Authentication Resource URL while configuring provider for Azure Stack Hub.