I get an error message. It says the program couldn't start and I should try a repair.
In the Task manager there is a process called Microsoft Click to Run
Did you run Windows Repair from Tweaking yet?
I have a feeling your permissions may be a bit off.
Yes i tried it but still the same
when you made the other login user account to try installing Office on from that account, did you make it a Admin type of user?
after all these posts and time, we still don't know what version of Windows you have???
do you have a system image backup of before this whole event?
I'm using windows 10 and I've no backup
well, I'm tapping out at this point.
that's me exhausted of ideas to try.
if it was mine, after doing all the above suggestions without success, it's now time to nuke it from space.
big hammer to hit it with for sure - but last resorts usually are.
hopefully someone can chime in with something myself or @hazelnut hasn't thought of.
and just to learn from a hard lesson to future proofing your system, start doing system image backups - not just data backups of your pics, docs, emails etc, but of the PC as a whole, at the Windows level.
they're like a snapshot in time of your PC - data, software, settings, everything.
an excellent, and free, one is Macrium Reflect.
do yourself a favour and make it your new nest friend.