Alert "One or more AD servers are offline" is displayed when attempting to connect to a Lync 2013 server in the Diagnostic Console (4261452)

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Title

Alert "One or more AD servers are offline" is displayed when attempting to connect to a Lync 2013 server in the Diagnostic Console
Description

In Diagnostic Console, in the Lync 2013 servers connections the alert "One or more AD servers are offline" is displayed. All the Domain Controllers are online. No problem with the Exchange 2013 servers connection. Exchange Servers and Lync Servers are on the same subnet.
Cause

The LDAP path in OCS2007 and in OCS2007 R2 are different. Our design is base on OCS2007 R2.
OCS stores key information in AD (everything from Global Settings, Location Profiles, Phone Routes, Policies, Pool Information, Trusted MCU’s and Trusted Services).
By default, in OCS 2007, the settings are stored in the root domain System Container. This equates to a distinguished name (DN) of the format:
> CN=RTC Service,CN=Microsoft,CN=System,DC=domain,DC=com
By default, in OCS 2007 R2, the settings are stored in the Configuration container (partition):
> CN=RTC Service,CN=Services,CN=Configuration,DC=domain,DC=com
Resolution

STATUS
This has been identified as a product defect. Change Request TF00604170 has been raised for this to be addressed in a future release of Unified Communications Diagnostics.
WORKAROUND
None
Defect ID

TF00604170

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