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Windows June 2011 Update: Breaks network share?

Gustav Brock
Gustav Brock asked
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Last Modified: 2012-06-27
Suddenly a WinXP client machine couldn't see a NAS shared by workgroup it has been accessing for years. Other machines - Win7, Win2003, and WinXP - could still see the NAS.

I investigated "everything" without finding a clue. Finally I did a system restore to Jun. 14th morning ... and voilá, the network drive was back!

Anyone else have seen this? I've searched on Google hi-and-lo without finding anything at all which I find a bit strange.

/gustav
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Commented:
Which update?
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Commented:
The automatic updates for June 2011.

/gustav
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This one is on us!
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This seems to be have been tracked down to the KB2536276 update. It breaks unencrypted Samba from at least Windows XP.

http://answers.microsoft.com/en-us/windows/forum/windows_xp-windows_update/why-is-update-kb2536276-causing-a-block-in/4b3536b7-b6b4-43fc-a973-c75ea478c7ca?tm=1308409382437&page=1

Does this make sense to you?

Don't know how that explains issues in network without Samba.

/gustav
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More here:

KB2536276 kills SMB access to old Linux Samba

/gustav
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Did a rollback (cancel) of the System Restore and the sharing issue returned.
Did a uninstall of KB2536276 and reboot and the issue was removed.
So KB2536276 is the source of this misbehaviour.

Thanks for your debuggin input which I didn't know about.

/gustav
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Remove the KB2536276 update until further notice.

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