If you're using Ubuntu 19.10 or newer, or Debian Bullseye or newer, you can check if you have anything installed and named like microsoft
with:
apt list ~i~nmicrosoft
Similarly, you can remove (any) with:
apt purge ~i~nmicrosoft
This uses the new syntax (apt 2.0) that lists:
~i
: installed packages
~n<pattern>
: packages whose names match the given RegEx pattern (partial match, not full match). We're using ~nmicrosoft
here so any package having microsoft
in its name gets selected.
For example, on my workstation with Ubuntu 20.04:
ubuntu@iBug-Server:~$ apt list ~i~nmicrosoft
Listing... Done
microsoft-edge-stable/stable 96.0.1054.53-1 amd64 [upgradable from: 96.0.1054.43-1]
packages-microsoft-prod/focal,now 1.0-ubuntu20.04.1 all [installed]
ubuntu@iBug-Server:~$