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Password synchronization failed for domain: domain.com. Details:
Microsoft.Online.PasswordSynchronization.SynchronizationManagerException: Unable to open connection to domain: domain.com. Error: Unable to retrieve source domain information. ---> Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsException: Unable to retrieve source domain information. ---> System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsConnection.ReadServerGuids(SourceDomainController sourceDomainInfo)
at Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsConnection.CreateSourceDomainInformation()
at Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsConnection.EstablishConnection()
--- End of inner exception stack trace ---
at Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsConnection.EstablishConnection()
at Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsConnection.Connect()
at Microsoft.Online.PasswordSynchronization.RetryUtility.<>c__DisplayClass1.<ExecuteWithRetry>b__0()
at Microsoft.Online.PasswordSynchronization.RetryUtility.ExecuteWithRetry[T](Func`1 operation, Func`1 shouldAbort, RetryPolicyHandler retryPolicy)
at Microsoft.Online.PasswordSynchronization.PasswordSynchronizationTask.OpenConnection(IDrsConnection connection)
--- End of inner exception stack trace ---
at Microsoft.Online.PasswordSynchronization.PasswordSynchronizationTask.OpenConnection(IDrsConnection connection)
at Microsoft.Online.PasswordSynchronization.PasswordSynchronizationTask.CreateConnection()
at Microsoft.Online.PasswordSynchronization.DeltaSynchronizationTask.SynchronizeCredentialsToCloud()
at Microsoft.Online.PasswordSynchronization.PasswordSynchronizationTask.SynchronizeSecrets()
at Microsoft.Online.PasswordSynchronization.SynchronizationExecutionContext.SynchronizeDomain()
at Microsoft.Online.PasswordSynchronization.SynchronizationManager.SynchronizeDomain(SynchronizationExecutionContext syncExecutionContext)
Microsoft.Online.PasswordSynchronization.SynchronizationManagerException: Unable to open connection to domain domain.com. Error: Unable to retrieve source domain information. ---> Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsException: Unable to retrieve source domain information. ---> System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsConnection.ReadServerGuids(SourceDomainController sourceDomainInfo)
at Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsConnection.CreateSourceDomainInformation()
at Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsConnection.EstablishConnection()
--- End of inner exception stack trace ---
at Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsConnection.EstablishConnection()
at Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsConnection.Connect()
at Microsoft.Online.PasswordSynchronization.RetryUtility.<>c__DisplayClass1.<ExecuteWithRetry>b__0()
at Microsoft.Online.PasswordSynchronization.RetryUtility.ExecuteWithRetry[T](Func`1 operation, Func`1 shouldAbort, RetryPolicyHandler retryPolicy)
at Microsoft.Online.PasswordSynchronization.PasswordSynchronizationTask.OpenConnection(IDrsConnection connection)
--- End of inner exception stack trace ---
at Microsoft.Online.PasswordSynchronization.PasswordSynchronizationTask.OpenConnection(IDrsConnection connection)
at Microsoft.Online.PasswordSynchronization.PasswordSynchronizationTask.CreateConnection()
at Microsoft.Online.PasswordSynchronization.DeltaSynchronizationTask.SynchronizeCredentialsToCloud()
at Microsoft.Online.PasswordSynchronization.PasswordSynchronizationTask.SynchronizeSecrets()
at Microsoft.Online.PasswordSynchronization.SynchronizationExecutionContext.SynchronizeDomain()
at Microsoft.Online.PasswordSynchronization.SynchronizationManager.SynchronizeDomain(SynchronizationExecutionContext syncExecutionContext)
Microsoft.Online.PasswordSynchronization.SynchronizationManagerException: Unable to open connection to domain: domain.com. Error: Unable to retrieve source domain information. ---> Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsException: Unable to retrieve source domain information. ---> System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsConnection.ReadServerGuids(SourceDomainController sourceDomainInfo)
at Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsConnection.CreateSourceDomainInformation()
at Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsConnection.EstablishConnection()
--- End of inner exception stack trace ---
at Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsConnection.EstablishConnection()
at Microsoft.Online.PasswordSynchronization.DirectoryReplicationServices.DrsConnection.Connect()
at Microsoft.Online.PasswordSynchronization.RetryUtility.<>c__DisplayClass1.<ExecuteWithRetry>b__0()
at Microsoft.Online.PasswordSynchronization.RetryUtility.ExecuteWithRetry[T](Func`1 operation, Func`1 shouldAbort, RetryPolicyHandler retryPolicy)
at Microsoft.Online.PasswordSynchronization.PasswordSynchronizationTask.OpenConnection(IDrsConnection connection)
--- End of inner exception stack trace ---
at Microsoft.Online.PasswordSynchronization.PasswordSynchronizationTask.OpenConnection(IDrsConnection connection)
at Microsoft.Online.PasswordSynchronization.PasswordSynchronizationTask.CreateConnection()
at Microsoft.Online.PasswordSynchronization.DeltaSynchronizationTask.SynchronizeCredentialsToCloud()
at Microsoft.Online.PasswordSynchronization.PasswordSynchronizationTask.SynchronizeSecrets()
at Microsoft.Online.PasswordSynchronization.SynchronizationExecutionContext.SynchronizeDomain()
at Microsoft.Online.PasswordSynchronization.SynchronizationManager.SynchronizeDomain(SynchronizationExecutionContext syncExecutionContext)
.

<forest-info>
<forest-name>domain.com</forest-name>
<connector-id>b4cdea2c-dd4d-43b0-9041-477c9fea3429</connector-id>
</forest-info>

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