Reverting a pull request in Azure DevOps can be a useful way to undo changes that have been merged into a branch but later found to be problematic. Here’s a general guide on how to revert a pull request in Azure DevOps:

1. Identify the Pull Request to Revert:

   • Navigate to the ‘Pull Requests’ section in Azure DevOps.
   • Find the pull request you wish to revert.

2. Create a Revert Branch:

   • It’s a good practice to create a new branch for the revert operation. This can be done from the Azure DevOps interface or using your local Git client.
   • Name the branch something descriptive, like revert/my-feature.

3. Revert the Changes:

   • Using Azure DevOps, navigate to the merged pull request.
   • Look for a button or option to ‘Revert’ the pull request. This will create a new pull request with the changes from the original pull request reversed.
   • If there’s no direct revert option, you can manually revert the changes using Git commands. Use git revert with the hash of the merge commit. This creates a new commit that undoes the changes.

4. Resolve Conflicts:

   • If there are conflicts between the current state of the branch and the changes being reverted, you will need to resolve these conflicts. This can be done in your local development environment.

5. Commit and Push the Revert Changes:

   • Commit the revert changes to your revert branch.
   • Push the branch to the Azure DevOps repository.

6. Create a New Pull Request:

   • Open a new pull request for the revert branch against the branch where the original changes were merged.
   • Ensure that your team reviews the changes.

7. Complete the Revert Pull Request:

   • Once the revert pull request has been reviewed and approved, complete the pull request to merge the revert changes into the target branch.

8. Testing and Validation:

   • After the revert is merged, ensure to test the application or system to confirm that the revert has resolved the issue without introducing new problems.

9. Communication:

   • Inform relevant team members or stakeholders about the revert and any implications it might have on the project or workflow.

Remember, reverting a pull request effectively undoes the changes introduced by that pull request, so it’s important to be sure that this is the desired action and to communicate with your team about the decision.