Exchange ActiveSync experienced an error when it tried to perform an Active Directory operation for user "%1". If this event ...

Exchange ActiveSync experienced an error when it tried to perform an Active Directory operation for user "%1". If this event occurs infrequently, no user action is required. If this event occurs frequently, check network connectivity using PING or PingPath. You can also use the Test-ActiveSyncConnectivity cmdlet. More information: 

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