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Date:	Wed, 11 Mar 2015 13:50:07 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: Non-privileged use can't logon
Message-ID:	<20150311125007.GC5732@calimero.vinschen.de>
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Please, https://cygwin.com/acronyms/#TOFU

Thank you.

On Mar 11 20:40, Max Rockliff wrote:
>> > Any ideas?
>>=20
>> Depends.  As for the actual cause why userenv.dll refuses to load, no.
>> It's just a simple LoadLibrary call, nothing fancy.  I just tried the
>> same scenario on my local 8.1 test machine and logging in with an
>> unprivileged account worked fine.
>>=20
>> I tried to come up with a workaround for the problem, though.  I just
>> uploaded a new developer snapshot to https://cygwin.com/snapshots/
>>=20
>> Just fetch the latest 32 bit cygwin1.dll,
>> http://cygwin.com/snapshots/x86/cygwin1-20150311.dll.xz
>>=20
>> Unxz it, chmod +x it.  Stop all Cygwin processes.  In Windows
>> Explorer, open the C:\cygwin\bin directory.  Rename the original
>> cygwin1.dll to cygwin1.dll.ORIG.  Move the new cygwin1-20150311.dll
>> into place and rename it to cygwin1.dll.  Retry your scenario.  And
>> please report back.
>=20
> Hey Corinna,
>=20
> You're a magician.  It seems to have fixed the problem, or at least provi=
ded an effective workaround.  Here's a transcript (kinda)
>=20
> 1.  Downloaded the new cygwin1-20150311.dll.xz  (PS. Kudos for using a
> yyyymmdd format in the name - I always do, but so many don't
> 2.  Copied the xz file to my privileged user account home folder and
> Unxz'ed it.
> 3.  Used Windows to copy the file cygwin1-20150311.dll to the
> C:\cygwin\bin folder
> 4.  Stopped the SSHD service
> 5.  Renamed the old cygwin1.dll to cygwin1.dll.old
> 6.  Renamed cygwin1-20150311.dll to cygwin1.dll
> 7.  Started the SSHD service
> 8.  Started the terminal
> 9.  Executed ssh st AT localhost and it logged on successfully no errors.
> 	Max AT Max-PC /bin
> 	$ ssh st AT localhost
> 	st AT localhost's password:
> 	Last login: Wed Mar 11 20:32:00 2015 from ::1
>=20
> 	st AT Max-PC ~
> 	$
> 10.  And, as we like to say in Australia - Sweet!
>=20
> What on earth did you change that made the error go away?

You don't want to know.
=2E
[spoiler alert]
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
I made loading userenv.dll non-fatal in this specific case.  The result
is that, in scenarios like yours, the user's Windows environment won't
be merged into the environment of the user's shell started from sshd.
However, since that's a new functionality anyway, you're not worse off
than with earlier Cygwin versions.


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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