Installing CYGWIN 3.6.5 on fresh install of Windows 11 24H2 Build 26100 fails

[Bill Stewart]

On Fri, Oct 17, 2025 at 9:24 AM J. P. Abelanet via Cygwin wrote:

> Package: 0/Perpetual
>         0p_000_autorebase.dash exit code -1073741819
>         0p_update-info-dir.dash exit code -1073741819
> Package: _/base-files
>         base-files-mketc.sh exit code -1073741819
>         base-files-profile.sh exit code -1073741819
> ...

If it helps, error -1073741819 (signed integer) equates to 3221225477
(unsigned) - hex 0xC0000005.

This is NTSTATUS error STATUS_ACCESS_VIOLATION[1], English description
string: "The instruction at 0x<value> referenced memory at 0x<value>.
The memory could not be <value>."

(Presumably whoever wants to output this description string somewhere
would need to run it through FormatMessage with appropriate <value>s.)

[1] https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-erref/596a1078-e883-4972-9bbc-49e60bebca55