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MQ_ERROR_CANNOT_IMPERSONATE_CLIENT
MQ_ERROR_CANNOT_IMPERSONATE_CLIENT means that the server-side component could not impersonate the client application while verifying security credentials. The failure is in establishing or using the caller security context, not merely in locating a queue.
What to check
- Confirm that the client is using an authentication context that the server can impersonate for the requested operation.
- Review the account, token, and delegation configuration involved in the directory-service or queue-security action.
- Distinguish this result from a normal queue ACL denial, because changing the queue permission alone may not repair impersonation.
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