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Update Host OS when VM's are running

Posted on 2013-12-29
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I've created several Virtual Machines on a very powerful Dell Server.  

The Host OS is Windows Server 2012 R2.  Every Guest OS on each VM is Windows 7 Professional.

I have a couple of questions - one of which I'm pretty sure of already.  Should each Windows 7 VM update as any Windows computer, i.e., individually?

Secondly, when updating the Windows Server 2012 R2 server, must all the VM's be shut down before the updates are installed?  Most of the server updates would require a reboot; so, would it cause problems for the VM's to be in a "Running" status when the Dell Host Server is reboots?
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Question by:baleman2
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ibrahim52 earned 500 total points
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Yes both are required and in fact I am having a similar scenario. Weekly or once in a month I have to update the server manually and while doing I have to shutdown all the VM properly and once after restart , I boot all the guest OS again.

My advice regarding updating the guest OS is that you should take the guest OS into the domain and leave the worries on group policy applying a policy to check the updates once in a month instead of daily or weekly so you don't have to be surprised in case your guest OS restarted after the updates were installed.

I use Virtualbox and there is a way to start the guest OS as a SERVICE from Host OS. Do google about it and it will be much hassle free for you to have less monitoring.
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