server 2012 hung after patching thru SCCM/WSUS client

It is not happening on all the servers, 10% of the servers we are facing this issue, any thoughts?
no clue in event viewer
there is site talking about it: https://social.technet.microsoft.com/Forums/windowsserver/en-US/330a3a17-0091-475f-a09e-538f605f7ae2/multiple-servers-hung-on-reboot-after-installing-the-following-april-2014-updates-anyone-else?forum=winserver8gen
but they are very specific to Apr patches, but for our it is very random, it comes in any patching cycle. we didn't notice whether is it happening on the same set of servers.
GoodADAsked:
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GoodADAuthor Commented:
i didn't mention that this issue is happening after patching thru SCCM 2012
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Abduljalil Abou AlzahabInfrastructure Team Leader – Professional ServicesCommented:
Did you try to install KB2939087 ? and see if the problem solved ? did you receive error 0x80071a91 on servers ? if yes read this article:
http://support.microsoft.com/kb/2939087

Also let me know if any error in event after update....
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GoodADAuthor Commented:
Raised ticket with Microsoft, they couldn't find the resolution, they are suspecting problem with antivirus drivers and vmware tools drivers.
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GoodADAuthor Commented:
nothing found on this so far, MS said no issue with their OS nor updates. may be problem withour environment or some other components
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GoodADAuthor Commented:
need help on this,
we have taken the snapshot of the few servers during the hung state, please tell me how to debug the information from vmware snapshot.
I can do windows part, but how to convert vmware snapshot to memory dump?
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GoodADAuthor Commented:
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