State of the Windows Installer

To all:

I am wondering about systems which have been recently patched with
Microsoft security updates. I find that sometimes when certain
security patches are applied, it leaves the windows installer in
either an unavailable state or in a place where Windows itself must be
restarted before anything can be installed.

Are there any special checks that can be made to determine this?

If not, then maybe I can make something to check the state of the
Windows installer.

Thanks for listening!

Sincerely,

Mark