I'm running WSUS 3 on SBS 2003 R2 x86.
In my clientapps folder I have both the x86 (32 bit) and x64 (64 bit) .exe files for WSUS client update agent.
I have migrated my entire IT estate of client desktops from Windows XP x86 to Windows 7 x64.
I have SUCCESSFULLY installed the x64 WSUS update agent on all clients EXCEPT one on which I get the message, "windows update agent installer encountered unrecoverable error". When I look in the event viewer, whether in "application", "setup" or "system" logs, I see no error corresponding to this failure, so I have no idea what the system thinks the eventid is.
I have already spent several hours on the web and found this article http://support.microsoft.com/kb/971058
and executed it in both "default" and "aggressive" modes. Neither worked but both screwed up the ISA client.
The only obvious difference between this particular desktop and all the standard desktops is that this one has the XP virtual desktop installed.
Any help would be gratefully received.