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ERROR_NO_SUCH_DOMAIN
The account authority for the requested domain could not be resolved or reached
SAMR first connects to a server and then looks up or opens a domain object by name or SID. ERROR_NO_SUCH_DOMAIN means the requested authority is unavailable as a usable domain target. The same client-visible result can arise from a wrong domain identifier or from inability to contact the domain, so it should not immediately be interpreted as proof that the domain was deleted.
Log the domain name/SID, server used for discovery and the DC that was selected. Test name/SID lookup and controller reachability separately. If the application accepts qualified account names, verify that it did not accidentally treat a local computer name or UPN suffix as a SAM domain. Do not fall back to the local SAM silently, because that can resolve a different principal with the same account name.
What to inspect
- Record the requested domain identifier exactly as sent to the account API.
- Separate domain lookup from controller reachability and authentication.
- Never silently substitute the local SAM for a missing domain in security-sensitive code.
References
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