If an organization no longer requires a previously authorized OAuth App, owners can remove the application's access to the organization's resources.

  1. In the top right corner of GitHub, click your profile photo, then click Your profile. Profile photo

  2. On the left side of your profile page, under "Organizations", click the icon for your organization. organization icons

  3. Under your organization name, click Settings. Organization settings button

  4. In the Settings sidebar, click Third-party access. OAuth App access tab in the left sidebar

  5. Next to the application you'd like to disable, click . Edit icon

  6. Click Deny access. Deny confirmation button