Outlook Mail

[driftwood]

I'd start with, which flavour of Outlook are we talking about?

The good old Outlook desktop app, part of Office
The new Outlook for Windows, windows mail replacement
The Outlook web app (not likely )


Assuming the new Outlook App, this uninstalled it for me...
https://techcommunity.microsoft.com/t5/o...-p/3941499

Code:

Remove-AppxProvisionedPackage -AllUsers -Online -PackageName (Get-AppxPackage Microsoft.OutlookForWindows).PackageFullName 

and if you want to block it installing again this link suggests a couple of registry keys that trigger the install
https://www.reddit.com/r/Windows11/comme...k_and_dev/

Code:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Orchestrator\UScheduler\DevHomeUpdate]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Orchestrator\UScheduler\OutlookUpdate]

AND/OR

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsUpdate\Orchestrator\UScheduler_Oobe\DevHomeUpdate]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsUpdate\Orchestrator\UScheduler_Oobe\OutlookUpdate]

Usual warnings, backup first etc...

It's the one that takes over my windows mail app.
I usually just uninstall it from programs, but it keeps reinstalling.
So I'm thinking it's the one you are calling "the new outlook for windows, windows mail replacement"