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Message-ID: <5490B760.6090407@tiscali.co.uk>
Date: Tue, 16 Dec 2014 22:51:12 +0000
From: David Stacey <drstacey AT tiscali DOT co DOT uk>
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To: cygwin AT cygwin DOT com
Subject: Re: Strange problem running Cygwin installer
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On 16/12/2014 21:44, Kevin Van Horn wrote:
> I'm having an odd problem installing Cygwin. After downloading the installer and double-clicking on it, and clicking "Run" on the "Open File - Security Warning" popup dialog, I get the "busy" wheel for maybe 1 or two seconds,  then it disappears and nothing else happens - no installer window, nothing. However, Task Manager still shows the installer process, although it is not using any CPU.
>
> This is on a machine running Windows 7 Professional. It happens with both setup-x86.exe and setup-x86_64.exe.

Unable to reproduce on Win 7 Ultimate with either x86 or x86_64 
installers. A few things to check: Firstly, when you see the busy 
spinning wheel, is there any CPU activity from either Cygwin's setup or 
another process? Have you checked your anti-virus logs? Try scanning the 
installers for viruses (they should be clean!) and then running again 
with your anti-virus turned off.

If you have UAC enabled, do you see the UAC prompt when running Cygwin 
setup? Are you running from an account where you would expect to be able 
to run with elevated privileges? Can you run the setup executable as 
Administrator? In a corporate environment, group policy and other rights 
may have changed since you last installed Cygwin.

I've checked the DLL dependencies of setup-x86_64.exe compared with the 
previous version and there is no new DLL dependency. So if you were able 
to run previous versions of Cygwin setup then consider what has changed 
on your machine since. Anti-virus is an obvious place to start, as these 
signatures change frequently.

I assume that there is no taskbar entry for Cygwin setup when you 
observe this behaviour - so the window isn't minimised, hidden behind 
other windows or off the screen somewhere?

A few things to try there - hope one of the above helps.

Dave.


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