postinstall script errors (-1073741819 / STATUS_ACCESS_VIOLATION) on default install with Cygwin 2.831 (64bit) on Windows 7 (64bit)

[Shaun Gosse]

Hello,

I'm trying to install Cygwin on a freshly installed and updated Windows 7 Ultimate 64bit. I am using the latest installer from Cygwin.com, 2.831. I have been primarily trying to use the 64bit version, but have also tried the 32bit version with the same results. Per similar issues in archives, I disabled UAC to no avail. There are none of the programs from http://cygwin.com/faq/faq.html#faq.using.bloda installed or enabled, with the exception of Windows Defender, which I have now disabled, and it still fails the same way. Rebooting the machine with it disabled, then I'll delete Cygwin and trying it again to confirm.

Attached the logs. The failure is a postinstall script exit status of "-1073741819", which from https://sourceware.org/ml/cygwin/2012-03/msg00721.html is stated to be the status code "STATUS_ACCESS_VIOLATION". I saw this a few different times on the list, but nothing particularly recent and exactly matching seemed to show up. Apologies if I've missed something relevant on the list or am making some other basic mistake.

But I haven't hit this issue before, and I've installed Cygwin a few times, including on Windows 7. I don't know what exact versions those would have been in comparison, but within a month or two back.

Oh, and http://cygwin.com/problems.html suggested running cygcheck, but it's not found:
-sh-4.1$ cygcheck
-sh: cygcheck: command not found

And I did confirm: after disabling Windows Defender, and rebooting, and removing the Cygwin folder, the default install attempt again failed identically.

Let me know if there's any other information that I should provide.

Thanks,
-Shaun Gosse


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