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Do we need to patch  all our 2008 and 2003 DCs if we are going to upgrade them to 2012?

Posted on 2014-11-26
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Last Modified: 2014-11-28
Hello,
Do we need to patch  all our 2008 and 2003 DCs if we are going to upgrade them to 2012?

Thank you very much.
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Question by:claudiamcse
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by:Cliff Galiher
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It is always a good idea to be fully patched before migrating. There are several patches that specifically fix issues that can cause a migration to fail.
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by:John Hurst
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That and the Schannel vulnerability needs to be patched. This is a large security issue.
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McKnife earned 500 total points
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You mean, your DCs are not patched? You are a courageous person.
What are you trying to do, doing an inplace upgrade installation or adding another DC to this domain?

If you are adding another new DC, the AD will be imported and file replication/DNS zone transfers will be setup. Normally, this will not require patches but of course, there might be bugs in this process that won't be present, when the downlevel systems are patched.

So without a doubt, fully patch those.
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by:claudiamcse
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Thank you.
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