Archive for the Windows 2012 Tag

Offline Files Stay Disconnected Over Wi-Fi

miqrogroove
2016-03-15T14:15:29+00:00

Configure Slow Link ModeEver since my move to a new apartment, I was frustrated by some of my network files going offline randomly and staying offline for 5 minutes or up to an hour or two.  The weirdest part was that it would only happen to the network files that were in a path with Offline Files enabled.  As a result, I would periodically lose access to files that were not marked “Always available offline”, and I would get frequent synchronization conflicts for any files that were still available offline.

Another symptom of this problem was that I could map a separate drive letter to the same or deeper path, not enable Offline Files for the networked drive, and then have no trouble with the files when I try to use the drive letter.  I could even browse shared folders using the server’s UNC path at the same time as my Offline Files cache seemed to be stuck offline.

I had several suspicions about why this was happening.  First of all, I had started using Wi-Fi networking on my desktop computer as a convenience until I could knock some holes in the apartment walls to run proper Ethernet cables.  The signal quality seemed good enough that I shouldn’t have persistent connection problems, yet the Offline Files system seemed central to the problem.  I eventually discovered that the Client Side Cache “slow link” mode was at fault for this whole mess.

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15 Mar 2016

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Cookies Not Working in IE10

miqrogroove
2015-08-08T15:06:12+00:00

I’ve finally fixed a crippling bug in Internet Explorer 10 that was preventing me from using any website that required cookie support.

This problem seemed to plague my Windows 2012 server from day one.  I’m not yet sure what was special about this configuration.  No matter how many settings I changed, every website I visited told me that I had cookies completely disabled.

I used these steps right before the browser started working correctly:

Step 1 – Find the “Delete Browsing History” dialog box.

ie-safety-menu

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8 Aug 2015

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Systems Engineering

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Folder Redirection Broken After GPO Changes

miqrogroove
2014-03-02T19:19:51+00:00

I am learning quite a bit about the Windows 2012 environment thanks to a recent server migration.  The biggest lesson so far deals with Folder Redirection, and the effects of repeated adjustments to the GPO settings.

Under certain circumstances, folder redirection seems to get “stuck” showing either an old folder path or none at all when the user goes looking for their documents.  The Group Policy Results tool seems to confirm that the Folder Redirection settings are not being applied at all for the user/computer profile that is stuck.  Frustratingly, I couldn’t find any problem with my Group Policy configuration.

No amount of logging off and on, adjusting permissions, or messing with Group Policy seems to have any effect.

In the end, I was able to clear up the problem by running this command:

gpupdate /Target:User /Force /Logoff

The key here is the Force option, which successfully resets the folder redirection policy for that user profile, and perhaps all the profiles on that particular computer.  Problem solved!  Windows 8.1, Windows 2012, and possibly other versions are affected.

2 Mar 2014

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Windows VPN Requires NTLMv1

miqrogroove
2015-08-28T20:36:06+00:00
LAN Manager authentication level set to Send NTLMv2 response onlyrefuse LM

Solution Screenshot

I’ve stumbled upon a seemingly undocumented authentication error in the Windows VPN system.

Error 691: Access was denied because the username and/or password was invalid on the domain.

This can be caused simply by elevating the VPN server’s LM authentication level to 5, which refuses the NTLM protocol.  According to KB823659 requiring NTLMv2 should not break Windows XP connections unless older systems are involved.  However, this configuration does cause client and server authentication errors.

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3 Sep 2011

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