You must restart this computer before installing Forefront TMG (final trial release)

Hi,

I am very happy that Microsoft has released the final version of TMG Server 2010. At this moment and as far as I know you can only download the trial. I have downloaded the trial version. But I cannot install it because I get a warning message during the Installation Wizard and setup cannot continue.

1. Deployed a new and clean Virtual Machine with Windows Server 2008 R2 (x64); succesfully
2. Run Windows Update; succesfully
3. Run Preperation Tool; succesfully
4. Run Installation Wizard; warning meesage

Then, the Installation Wizard says "A computer restart is required. You must restart this computer before installing Forefront TMG". But... when you restart the server, it keeps coming with this error message. You can restart as often as you want, same result.

At isaserver.org I saw the same issue. http://forums.isaserver.org/m_2002095201/mpage_1/key_/tm.htm#2002095201

I know there is a status in the registery somewhere and you can clean it. But I don't know where anymore and if this will result in unwanted behaviors. Any suggestions?

Boudewijn