ADC cannot replicate to Exchange 5.5. because, on this server, LDAP Client Integrity is set to ‘2’ (always sign.) Exchange 5.5 does not support LDAP signing. To allow this serverto connect to 5.5., set the registry key to 0 (never sign) or 1 (sign if possible)

Details
Product: Exchange
Event ID: 8341
Source: MSADC
Version: 6.5.6940.0
Component: Microsoft Exchange Active Directory Connector
Message: ADC cannot replicate to Exchange 5.5. because, on this server, LDAP Client Integrity is set to ‘2’ (always sign.) Exchange 5.5 does not support LDAP signing. To allow this serverto connect to 5.5., set the registry key <registry key>to 0 (never sign) or 1 (sign if possible)<value>
   
Explanation

The Active Directory Connector (ADC) cannot replicate to Exchange 5.5. because, on this server, Lightweight Directory Access Protocol (LDAP) Client Integrity is set to 2 (Always sign). Exchange 5.5 does not support LDAP signing.

   
User Action

Exchange 5.5 does not support LDAP signing. To allow this server to connect to Exchange 5.5., set the registry key to 0 (Never sign) or to 1.

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