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Subject: Re: [bug: csih] Setting privileged rights to cyg_server fails on Windows 7.
To: cygwin@cygwin.com
References: <20180613224901.d2cf679cef8eab89a834c494@nifty.ne.jp> <20180613181407.GT7851@calimero.vinschen.de> <20180614062218.eee6704d2ebc62383a2927c7@nifty.ne.jp>
From: Shaddy Baddah <lithium-cygwin@shaddybaddah.name>
Message-ID: <3528d196-f810-ae33-1fd3-098bf5fe4746@shaddybaddah.name>
Date: Thu, 14 Jun 2018 11:29:40 +1000
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Hi,

On 14/06/18 07:22, Takashi Yano wrote:
> Hi Corinna,
> 
> On Wed, 13 Jun 2018 20:14:07 +0200
> Corinna Vinschen wrote:
>> There's something fishy in your environment.  The variable LOGONSERVER
>> is always set in Windows NT, at least since NT4.  For standalone
>> machines LOGONSERVER is set to "\\<machinename>".  You should really
>> try to find out why LOGONSERVER isn't set for you.
> 
> With your advice, I have found the cause. I usually logon as a user
> who does not have administrator rights for security reason. This user
> belong to only "Users" group. When I need administrator rights,
> I use "Run as administrator" menu to switch to another user who
> has administrator rights. In this case, LOGONSERVER is not set.
> 
> If I logoff from the first user account and logon as the second user,
> LOGONSERVER is set.
> 
> Moreover, the behaviour above seems to be true not only on Windows 7,
> but also on Windows 10.
> 
> I have confirmed that iu-config successfully finishes without the
> patch I proposed, if I logon as an administrative user instead of
> using "Run as administrator".
> 
> Thank you very much.

I proposed a similar patch last year, due to the same scenario you
mention (elevate to Administrator as a different user):

https://cygwin.com/ml/cygwin/2017-01/msg00233.html
https://cygwin.com/ml/cygwin/2017-01/msg00283.html

I got busy and never followed up on Corinna's concerns.

-- 
Regards,
Shaddy

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