Problem:

When connecting Azure DevOps, you may receive the following error:

Solution:

Your Azure DevOps environment isn't setup to allow third-party OAuth integrations. To enable this, please follow the instructions below:

Navigate to your organization settings in Azure DevOps and select "policies" from the left side menu. On this page there is a setting named "Third-party application access via OAuth" that needs to be enabled:

Learn more about these settings here: https://docs.microsoft.com/en-us/azure/devops/organizations/accounts/change-application-access-policies?view=azure-devops