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Getting error when preparing active directory for lync server failure occurred while attempting to check the schema state please ensure active directory is reachable.

I have also connected this server with a domain server.

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What schema are you running? –  George Jan 21 '13 at 11:26
I am running this windows server 2008 r2 enterprise –  Bilal Jan 21 '13 at 11:29
I am sorry what are you asking about? –  Bilal Jan 21 '13 at 11:45
Please see this page to get your schema object version. –  George Jan 21 '13 at 12:04
@F4r-20 Domain controller server has Schema version 47 –  Bilal Jan 21 '13 at 12:34

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