App authorization grayed out for some users?

There are several reasons why the App Permissions slider in Microsoft Teams might be grayed out. Here are some possible causes:

1. there is a policy in your organization that restricts or has disabled app permissions. You may need to contact your administrator to verify this.
2. your user account does not have the necessary permissions to change app permissions. You may need to contact your administrator to make sure your permissions are configured correctly.
3. It may also be that your version of Microsoft Teams is not up to date or is missing an update. Check for updates and install them if necessary.
4. some app permissions can only be changed by users with specific license types. Check your license and make sure you have the required permissions.
5. it is also possible that this is a temporary issue. Try logging out of Teams and logging back in, or restarting the device to see if the problem is resolved.