RE: uac incorrectly identifies nsis installers

Posted October 6, 200717 yr

is this the reason i'm having problems installing my kapersky antivirus? what

can i do if it is?

"Amir Szekely" wrote:

> I realize this isn't exactly the best place for bug reports, but it's the

> best one I could find. If there's a better place, please let me know and I'll

> post my bug report there.

> I'm the lead developer of NSIS, a software package used to create installers

> for Windows.

> Vista added a new feature that asks the user for an administrator password

> for programs requiring administrator privileges. The application specify that

> in its manifest, but Vista also automatically identifies certain types of

> programs. One of these is installers created using NSIS.

> The problem is with the method used to identify those installers. There are

> two methods as far as I can tell. The first looks for a special signature

> used in the header of every installer. The second, the problematic one, is

> looking for "Nullsoft.NSIS" in the name attribute of the assemblyIdentity tag

> in the xml manifest. That creates a false positive as every application in

> the NSIS package has that prefix in the name attribute. Installers share that

> prefix, but have ".exehead" suffix. This causes utilities used to create

> installers that require no administrator privileges to be identified as

> programs that require privilege escalation. This renders most of the

> applications in the NSIS package unusable for standard users.

> A similar problems occurs with Inno Setup and its compilers, but I don't

> know because of which string.

> Please fix it so it'd search for Nullsoft.NSIS.exehead and not just

> Nullsoft.NSIS.

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