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Re: Windows 10 Security Update breaks TSVN Auth?

From: Pavel Lyalyakin <pavel.lyalyakin_at_visualsvn.com>
Date: Tue, 27 Sep 2016 16:23:10 +0300

Hello Per,

On Tue, Sep 27, 2016 at 3:59 PM, Per Salmi <per.salmi_at_gmail.com> wrote:

> Hi!
>
> Are there any TSVN users out there that have ran into trouble using TSVN
> during the last couple of weeks since installing Windows 10 Security Update
> KB3193494 or KB3189866?
>

Are you sure that this behavior is related to those Windows Updates? I
really doubt that this issue has anything to do with those updates. Does it
reproduce on any other non-domain machine with Windows 7 or Windows 8.1?

> The scenario is that installing any of these updates seems to break TSVN
> authentication.
> Trying to checkout or update results in "Error running context: An error
> occurred during authentication", while right-click -> Repo Browser on an
> existing working copy shows an incomplete repo browser view with a few
> folders but no files.
>
> This is when the repo is on a server using Windows authentication and the
> users are working on machines that are on the same network but not members
> of the same domain. Before the security patches this gave a
> username/password popup when trying SVN operations and after entering the
> correct DOMAIN\user + password the operations completed without any
> problems. Now after the updates there is no user/password dialog, the
> operations just fails immediately. It looks like the TSVN client just tries
> to authenticate with the user logged into the Windows 10 machine, in this
> case Microsoft Accounts that are not part of the windows domain without
> letting the user enter any other credentials.
>
> We are using TSVN 1.9.4 build 27285 on Windows 10 x64 with Anniversary
> Update and we have reproduced this behavior on multiple machines with the
> same security updates.
>

I can guess that by "Windows authentication" you mean Integrated Windows
Authentication <https://www.visualsvn.com/server/features/windows-auth/>
(IWA). Right? Have you recently switched to using IWA? The behavior could
occur if you switched to IWA from Basic authentication. Basic auth will
prompt users for credentials, but IWA does not.

In such case, you should use Windows Credential Manager on non-domain
machines. The users should put their account's credentials to access
VisualSVN Server into Windows Credential Manager:

   1. Start *Control Panel | Credential Manager*.
   2. Click *Add a Windows Credential*.
   3. As *Internet or network address* enter the FQDN of VisualSVN Server's
   machine.
   4. As *Username* enter your domain account's username in DOMAIN\Username
   format.
   5. Complete the password field and click *OK*.

--
With best regards,
Pavel Lyalyakin
VisualSVN Team
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Received on 2016-09-27 15:52:14 CEST

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