> I encountered several hours of downtime attempting to update the VM
> Additions from 13.552 to 13.820 on Windows Server 2003 guest OS's. The
> parent server is Windows Server 2003 Enterprise x64 SP2 and is up to date
> running Virtual Server 2005 R2 Enterprise SP1 + KB948515 + MS09-033
> (KB969856). When I attempt to install the new additions on the guests, it
> uninstalls the existing ones and reboots the guest OS. When the guest OS
> restarts without any additions, it is so slow (55 min to press
> ctrl-alt-del logon screen!) it is impossible to log on and complete the
> installation of the new additions. I had to revert to my backup VHD
> drives to get the guest OS's operational again. How should I complete the
> upgrades? I tried booting the guest OS in safe mode, but the additions
> cannot be installed since the Windows Installer Service does not run in
> safe mode :(
>
> I have already reviewed these articles:
> http://technet.microsoft.com/en-us/library/cc708377%28WS.10%29.aspx
> http://technet.microsoft.com/en-us/library/cc708258%28WS.10%29.aspx

> Any suggestions yet? Can the VM Additions be installed manually by
>copying files to offline VHD's and editing the registry files (dangerous and
>time consuming w/o a proper procedure)? Or is this a know issue with
>MS09-033 so I can call Microsoft PSS for support?
>