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Date: Thu, 25 Aug 2016 16:38:10 +0200 (CEST)
From: Tobias Zawada <i_inbox AT tn-home DOT de>
To: Peter Rosin <peda AT lysator DOT liu DOT se>, cygwin AT cygwin DOT com
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Subject: Re: File create problem
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Hello Peter,
> 
> Trying to create bash.exe (with any random content) by other means
> also fails.
> 
> Creating other files in the C:\cygwin64\bin folder works just fine,
> e.g. C:\cygwin64\bin\bach.exe.
> 
> There is no existing C:\cygwin64\bin\bash.exe that has permissions
> that can be examined, so the only permissions that can reasonably
> have any effect are those for the folder, but as stated, it is ok
> to create e.g. C:\cygwin64\bin\bach.exe which means that folder
> permissions appear to be ok.
> 
> Renaming the existing C:\cygwin64 to C:\cygwin64old, and then
> trying to install a fresh copy in C:\cygwin64 gets the same
> permission error.
> 
> Installing bash et al with the base in C:\cygwin65 works just fine.
> 
> So, it appears that the name "C:\cygwin64\bin\bash.exe" (and a few
> others) is just special in some way.
> 
This really looks like a problem with an antivirus program.
I had a similar issue ome time.
Might it be that bash.exe has been moved to some container of the anti-virus
program?

> I'm not part of any domain, and I'm on Windows 10. Rebooting
> doesn't help. Disabling AVG business edition doesn't help.

Often disabling does not help.
One has to prevent the starting of the anti virus program.

With best regards,
Tobias

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