NTSTATUS 0xC0000062 (STATUS_INVALID_ACCOUNT

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: The supplied account name is not in a valid form for lookup or account creation.

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STATUS_PRIVILEGE_NOT_HELD	STATUS_USER_EXISTS

STATUS_INVALID_ACCOUNT_NAME

The account name format is invalid before identity lookup completes

This status is about name syntax and namespace form. The string is not a well-formed account name for the operation, so diagnosis starts with formatting, escaping, domain prefix, UPN form, or SAM-compatible name rules.

A non-existent but well-formed account is a different problem. Keep the exact input string because normalization can hide the bad form.

What to inspect

Record whether the caller supplied UPN, DOMAIN\name, local SAM name, SID string, or another identity form.
Check trimming, Unicode normalization, invalid separators, and accidental service-principal strings.
Distinguish this from STATUS_NO_SUCH_USER or domain-controller reachability failures.

References

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