In the Power Platform Admin Center, you may have added app users that you no longer need. To view the list of app users added to an environment, navigate to the following URL https://admin.powerplatform.microsoft.com/manage/environments/c1725b9e-0000-0000-0000-000d3ad0000/appusers, replacing c1725b9e-0000-0000-0000-000d3ad0000 with your environment ID: To delete an app user, click on the ellipsis (…) next to the app user and select the Delete button. However, you may encounter a misleading error message: ✖ Failed to delete app user: User with SystemUserId= is not disabled.