I have latest Source tree 3.1.3 on windows 10 , when I try to add our Azure DevOps organization as Remote account I am getting following "Authentication failed Object reference not set to an instance of an object"error . I have used Username and PAT which has needed scope and access. Appreciate any help on how to resolve this??? Following are the steps I performed after creating PAT in Azure DevOps with FULL ACCESS by following instructions in this URL https://docs.microsoft.com/en-us/azure/devops/organizations/accounts/use-personal-access-tokens-to-authenticate?view=azure-devops

STEP:1

Click on Remote Tab -> Add an account

STEP:2

Enter or select following values

Hosting Service: Azure DevOps

Host URL: https://organizationname.visualstudio.com/

Preferred Protocol: HTTPS

Authentication: Personal Access Token

Then clicked on "Refresh Personal Access Token" button

STEP:3

Entered username and PAT as password

Which returned following Authentication failed error

Please help in resolving this issue.