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ERROR_DS_CLIENT_LOOP
ERROR_DS_CLIENT_LOOP (0x00002043) is an Active Directory Domain Services LDAP result. The LDAP client detected a referral loop while following directory referrals.
Log each referral URL or target as the client follows it and stop at the first repeated location. Correct the referral topology or client search base so the same naming contexts are not traversed in a cycle.
What to check
- Record every referral URL the client followed and identify the repeated target.
- Check naming contexts, DNS, and cross-forest referral configuration for circular routing.
- Set an appropriate referral strategy in the application instead of retrying the same chain indefinitely.
Useful command
Get-ADRootDSE -Server "<dc-fqdn>" | Select-Object namingContextsMicrosoft: AD DS LDAP operations · Microsoft: LDAP ETW tracing · Microsoft: AD DS diagnostic logging
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