technobuddha
22nd August 2010 21:24 UTC

run installed app as administrator, and remove services
Hi all,
I have an nsis installer, that installs a few applications.
it works in windows xp, but in widnows 7, there are a few problems, and I'm sure nsis has a plugin for me, but can't figure it out for the likes of me.

The application, which needs to run at startup, is always prompted with "needs to run as administrator". My understanding, is that a shortcut with the checked "run as administrator" needs to be included? how is this accomplished with NSIS?

also, another service application, gets installed and runs fine, but when the user tries to remove it, via the installer, it won't work: needs administrative permission to remove (because the uninstaller runs a batch file,to remove the services). Is there an nsis plugin that allows the removal of a service, instead of a batch file?

thanks!

Animaether
22nd August 2010 22:02 UTC

Originally posted by technobuddha
The application, which needs to run at startup, is always prompted with "needs to run as administrator". My understanding, is that a shortcut with the checked "run as administrator" needs to be included? how is this accomplished with NSIS?

Is there an nsis plugin that allows the removal of a service, instead of a batch file?

technobuddha
23rd August 2010 18:21 UTC

sooo, then how does NSIS able to create an installer, that allows for an application to startup WITHOUT being prompted for administration privilage? this application needs it, and i suspect what your saying, is that at this time, NSIS can't do that then?

MSG
23rd August 2010 21:04 UTC

If an application requires administrative access, then naturally there's nothing you can do about that. If it needs it, it needs it. Not even NSIS can change that.

What makes you think you can run an application without what it needs? You wouldn't expect your PC to start running without the electricity it requires, would you?

Animaether
23rd August 2010 23:38 UTC

One potential confusing situation is when you build an installer that requires Admin access, so you 'RequestExecutionLevel admin' in your installer. Now the installer process has Admin privileges. Next up you install an application that requires Administrator privileges and on the Finish page you add a "Run MyProgram now" option. The user leaves that checked, finishes the installer, and the application ruins.. without an elevation prompt. So what happens there? The installer with its Admin privileges process launches another process (the application) - and this process automatically takes on the same privileges (roughly speaking) as the process that launched it (the installer). Hence no renewed elevation required.

This is typically -not- desired, though, and is one of the main reasons the UAC plugin exists, for example... to specifically launch an application as User even if the installer runs with Admin privileges.

technobuddha
24th August 2010 14:09 UTC

Yep,thanks Animaether for the suggestion, I used the NSIS_Simple_Service_Plugin, and it works! with regards to 'RequestExecutionLevel admin', I'll add that!!!

I hope this works, and i'll find out tomorrow... I appreciate your time!

Animaether
24th August 2010 16:31 UTC

Originally posted by technobuddha
Yep,thanks Animaether for the suggestion, I used the NSIS_Simple_Service_Plugin, and it works! with regards to 'RequestExecutionLevel admin', I'll add that!!!

I hope this works, and i'll find out tomorrow... I appreciate your time!