Blocking Microsoft Outlook and keeping Mail on Windows 10 IoT LTSC.

Posted by RomanianBagVoid@reddit | sysadmin | View on Reddit | 28 comments

Hi everyone, I have a PC to maintain where I have to keep the old Calendar and Mail.

I've tried a(1) variety(2) of fixes(3) to this issue in the Registry Editor.

Now I am at the point where when I open Microsoft Mail, Outlook auto-installs itself and Mail tells me to move to Outlook. The client, very obviously, doesn't want Outlook, because that breaks the Windows 10 machine and mandates Windows 11.

Other installed apps are: Photos (from W11) and Snip & Sketch (from W11). Office 2021 LTSC is as well installed but without Outlook.

Any suggestions on to how to block Outlook from auto-installing and maybe even hide the "try the new Outlook" buttons is welcome.