I have an application that does a remote install of framework 3.5.1 over a domain network, this works on Vista SP2 machines but fails on SP1 machines.If I apply SP2 to the SP1 machine the applicationwill then successfully remoteinstall the framework.This is a commercial product that will be going out to a large number of customers who for one reason or another may not yet have installed SP2. I have checked the list of hotfixes in SP2 and cannot spot a hotfix directly related to this issue.If anyone is aware of a specific hotfix that can be applied to fix this I would be grateful :)