Home > Lync > The Specified forest functional level is invalid. “Lync Server” requires forest running in windows 2003 mode or higher.

The Specified forest functional level is invalid. “Lync Server” requires forest running in windows 2003 mode or higher.


i f you get error “The Specified forest functional level is invalid. “Lync Server” requires forest running in windows 2003 mode or higher”  while run prepare schema on lync 2010, please raise domain functional level and raise forest functional level.

 

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click Start >Administrative Tool >  Active directory users and Computer

right click your domain > raise domain functional level

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click Side Bar and choose windows server 2003 and click Raise

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click oke

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raise forest functional level, click start > administrative tools > active directory domain and trust.

click side bar and choose windows server 2003, then click raise

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click Ok

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and then run again prepare schema on your server lync

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Categories: Lync
  1. allan
    July 16, 2012 at 11:20 am

    Thanks for the article. But I used only one domain, that means domain forest has only one domain in it. So after I raised domain and tried to raise the forest, I did not see it. When I tried to reaise the directory domain and trust, it’s been already raised the same as domain. What should I do?

  2. July 16, 2012 at 11:31 am

    have you to check it forest and domain level? min to install lync you have raise to windows server 2003..if you have ready to raise domain functional level, you have to check again forest functional level.
    please notify me if you have still problem while install lync

  3. Anonymous
    February 3, 2013 at 1:34 am

    Thank you. This was the issue I was missing was to Raise the FOREST and not just the Domain level.

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