AD Sync password sync issues (Event ID 611)

July 30, 2026

1 min read

AD Sync password sync issues (Event ID 611)

Event ID 611
Password synchronization failed for domain: pei.com

Details:
System.DirectoryServices.Protocols.LdapException: The operation was aborted because the client side timeout limit was exceeded.

To resolve, a registry setting has to be changed on the server running AD Sync, followed by a reboot:

On the server running AD Sync, open regedit.
Navigate to the key:
HKEY_LOCAL_MACHINESystemCurrentControlSetServicesLdap
Set the value of LdapClientIntegrity to 0.
Restart the server.
After the restart, trigger a new sync by manually running the task scheduler or by running the directory synchronization command DirectorySyncClientCmd.exe. A full sync is not required.

Brandon Stuart, PEI

Stephanie Hamrick

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AD Sync password sync issues (Event ID 611)

AD Sync password sync issues (Event ID 611)

To resolve, a registry setting has to be changed on the server running AD Sync, followed by a reboot:

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