ERROR_DS_LDAP_SEND_QUEUE_FULL 0x800721A8

Error code 8616 · HRESULT 0x800721A8

WINDOWS

The LDAP servers network send queue has filled up because the client is not processing the results of its requests fast enough. No more requests will be processed until the client catches up. If the client does not catch up then it will be disconnected.

Windows troubleshooting diagram: Device Manager warning and a system file scan
Windows errors: check drivers, system files and Event Viewer, in that order.

What it means

ERROR_DS_LDAP_SEND_QUEUE_FULL is a Windows error code (system error 8616, returned as HRESULT 0x800721A8) reported by Windows. Its official message is: “The LDAP servers network send queue has filled up because the client is not processing the results of its requests fast enough. No more requests will be processed until the client catches up. If the client does not catch up then it will be disconnected.”

How to fix ERROR_DS_LDAP_SEND_QUEUE_FULL

  1. Reboot once — many one-off system codes disappear with a clean restart
  2. Repair system files: 'sfc /scannow' then 'DISM /Online /Cleanup-Image /RestoreHealth'
  3. Find the source in Event Viewer → System: filter for this exact code and open its provider link

Related errors

ERROR_DS_DISALLOWED_IN_SYSTEM_CONTAINERERROR_DS_DRA_OUT_SCHEDULE_WINDOWERROR_DS_POLICY_NOT_KNOWNERROR_DS_REPL_LIFETIME_EXCEEDEDERROR_DS_EXISTING_AD_CHILD_NCERROR_NO_SITE_SETTINGS_OBJECTERROR_DS_DOMAIN_RENAME_IN_PROGRESS

Source: Microsoft WinError.h

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