Exchange 2013 Error


I am getting attached error while trying to install Exchange 2013 on Windows 2008 R2.  All the prerequisites are in place. I have tried multiple option and have referred multiple links to get this resolved but no luck.

Can someone help me ?

Mahesh BadgeAsked:
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1) try this first...
Open Active Directory users and computers and delete the User Object whose display name starts with "DiscoverySearch" and resume the setup and it should be successful.

Once setup is complete, run /p to recreate the Discovery Search.

Once created Run the Command below to enable the Discovery Search Mailbox:

Get-User Discovery* | Enable-Mailbox "UserLogonName of Discovery Search Mailbox" -Discovery -Database "Your Mailbox Database Name"

If that doesn't work.....try this

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