What does Windows error code 8643 (ERROR_DS_LOW_ADLDS_FFL) mean?

 
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ERROR_DS_HIGH_DSA_VERSION ERROR_DOMAIN_SID_SAME_AS_LOCAL_WORKSTATION

ERROR_DS_LOW_ADLDS_FFL

At least one AD LDS replica cannot support the requested configuration-set level

AD LDS uses a shared configuration set for replicated instance metadata and behavior. Raising that behavior level requires all participating directory servers to support the requested capability. A single lower-version or stale LDS instance can therefore block the transition, just as a lower-capability DSA blocks an AD DS functional-level raise.

Inventory the LDS instances represented in the configuration set and compare their server versions and behavior metadata. Check for removed instances whose configuration objects remain, and verify configuration-set replication before deciding that an instance is genuinely obsolete. Microsoft also documents startup failure after manually editing msDS-Behavior-Version, so use supported upgrade and configuration procedures rather than forcing the value.

What to inspect

  • Enumerate all LDS instances in the configuration set, including stale metadata.
  • Upgrade or remove lower-capability instances before raising the level.
  • Confirm replication convergence and avoid direct behavior-version edits.

References


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