touchring
28th January 2009 19:03 UTC

nsSCM fails to run in uninstaller under Vista
Hi, i've having problems trying to get nsSCM to uninstall some of my installed services under Vista SP1. Using the UAC plug-in didn't help either. I've tried research ad tweaking the code for several days, but to no avail.

Code:

RequestExecutionLevel admin

Function un.onInit

UAC::RunElevated

FunctionEnd

Section Uninstall

UAC::RunElevated
..................
# Remove abc service
nsSCM::Remove /NOUNLOAD "abc"
Pop $0 ; return error/success


-> I'm logging in as Vista Admin, but service abc does not uninstall. The uninstaller removes folders and shortcuts successfully though.

The weird thing is that nsSCM worked for the installer section. For some reasons, i feel that Vista seems to give NSIS uninstallers lower rights than the installer?

Appreciate any tip. :)

Anders
28th January 2009 19:54 UTC

RequestExecutionLevel admin should be enough, don't use the uac plugin

touchring
30th January 2009 06:20 UTC

Thanks Anders, yes UAC is not required. I found out that the culprit is /NOUNLOAD. for reasons i don't know, if i add "nsSCM::Stop /NOUNLOAD "abc"" before "nsSCM::Remove /NOUNLOAD "abc"", and if the service is not started in the first place, Remove will fail??

Anders
30th January 2009 07:35 UTC

could be a bug in the nsSCM plugin, maybe it can't handle staying loaded