Oliver Sommer 
2009-04-07
For weeks now I have had trouble installing the SQL SP3 on the EBS management servers I support.

First you need to copy the BPAClient.dll file located under C:\Program Files (x86)\Microsoft SQL Server\90\Setup Bootstrap\BPA\bin to C:\Program Files (x86)\Microsoft SQL Server\90\Setup Bootstrap\BPA.
Then you need to exec the folowing script line in a command prompt:
cscript %SystemDrive%\inetpub\AdminScripts\adsutil.vbs set w3svc/AppPools/Enable32bitAppOnWin64 1
Once SQL SP3 is installed run the command below to set the enable32bitapponwin64 back, otherwise the EBS Admin Console crashes:
cscript %SystemDrive%\inetpub\AdminScripts\adsutil.vbs set w3svc/AppPools/Enable32bitAppOnWin64 0