Acrobat Reader XI crashes in 2nd account (eula)

Question

I installed Acrobat Reader XI on windows 7 on a machine with 2 accounts. It worked as expected in the 1st account, but the 2nd account could not start it. The accept license window did not appear. The event list of Win7 showed, Eula.exe of AcrobatReader crashed.
Both accounts are administrator accounts. I tried to remove the software and install it in the 2nd account first, the same result with the 1st account. I added a 3rd account, the same.
Is it prohibited by the eula to use Acrobat Reader XI on one machine in 2 accounts (be aware: login account 1, it works, shutdown, power on, login account 2, it does not work, shutdown, power on, login account 1, it works) ? Is there a way around or did I miss something ? The problem arised after updating from Acrobat Reader X to XI.
Many thanks for any help.

Answer 1

Sigh, first an unprecise product name and now the wrong forum, I don't know, how to apologize.
In regard of my problem: I've yet uninstalled, used acrobat cleaner, used both options (clean reader and clean acrobat), all had the same described effect.
The differences to your described procedure are: I logged in using an administror account. The account name was not Administrator, but it was an administrative account. 2nd: I didn't disable the antivir software. But deinstall and install never ever showed any error messages. I'm sorry, that I can't simply obey your proposals, the machine of a customer of mine has the problem, none of the machine, I have simple access to, has the problem.
Thanks and regards