Hi all,

When i tried preparing the forest in forest preparation wizard,
the options to set the location to store global settings is greyed out, but it could be proceeded further.
finally the wizard is failed to complete the forest preparation.

I'm installaing OCS2007R2 in WinServer 2008R2.

Regards,
Arun.

• Edited by ArunKumarJ Friday, February 07, 2014 12:41 PM

Try to run Enable-CsAdForest -GroupDomain domain.com command.

Verify domain and forest function level

All forests in which you deploy Office Communications Server must be raised to a forest functional level of at least Windows Server 2003

Also you can refer below link

http://technet.microsoft.com/en-us/library/dd573032%28office.13%29.aspx

http://technet.microsoft.com/en-us/library/dd572418%28v=office.13%29.aspx

Before you run Forest Preparation, you need to verify schema preparation and replication manually.

You can check http://technet.microsoft.com/en-us/library/bb663702(v=office.12).aspx