Revoking user granted consent to an app
Logged in as the target user that you want to revoke app consent for, go to https://myapplications.microsoft.com
In the list of apps, find the app to remove consent from, for example, Enterprise Mail Handler (JEMHC)
Right click the app or open the “3 dot menu”, and select Manage your application
You will now be shown the permissions that you have consented to. To revoke your individual consent for the app, use the Revoke consent button
Revoking admin granted consent to an app
Logged in as an administrator for your Microsoft 365 domain, go to Azure > Enterprise applications and find the app you want to revoke consent from, for example, Enterprise Mail Handler (JEMHC)
Select the app and then go to the Permissions page.
Here you can see permissions granted by admins. Revoke permission consents as required.