What does HRESULT 0x80090332 (SEC_E_SECURITY_QOS_FAILED) mean?

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Description:

The security context could not be established due to a failure in the requested quality of service (e.g. mutual authentication or delegation).

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SEC_E_ALGORITHM_MISMATCH	SEC_E_UNFINISHED_CONTEXT_DELETED

SEC_E_SECURITY_QOS_FAILED

SEC_E_SECURITY_QOS_FAILED means that SSPI could not establish the context with the requested security quality of service, such as mutual authentication or delegation. A connection may be reachable while still failing this policy requirement.

How to diagnose

Record the requested context flags and the final attributes returned by SSPI.
Check whether the selected package and target environment support the requested property.
Separate a policy requirement from an optional optimization; do not silently weaken authentication to make the connection succeed.

After a partial negotiation

Delete the incomplete context and start a new one only after correcting the policy or capability mismatch.

Microsoft: AcceptSecurityContext (General) · SSPI Status Codes

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