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RTC_E_SIP_AUTH_FAILED
Operational meaning: RTC_E_SIP_AUTH_FAILED
This result is useful only when preserved with its producing phase; in selecting an allowed authentication method, validating the challenge realm, and establishing a protected SIP transport, it denotes the selected SIP authentication attempt was rejected or could not validate for the challenge.
The machine-readable identity of this result is 0x80EE0011 in the RTC interface facility 0xEE; the result identity matters because RTC uses separate facilities for API conditions, SIP final responses, and PINT service statuses.
The first useful check for this HRESULT is to preserve scheme, realm, user identity, response status, nonce lifecycle, and credential source without secrets; The result must be separated from nearby conditions because authentication failure is separate from authorization refusal after successful identity verification.
Signals worth preserving
Correlate this result at source: the method or callback, the owning object generation, and the active protocol transition; for this HRESULT, this keeps later retries from obscuring causality.
- Code-specific proof for this HRESULT: preserve scheme, realm, user identity, response status, nonce lifecycle, and credential source without secrets.
- Correlation key for this HRESULT: client/server UTC time and
TLSphase. - Protocol or object snapshot for this HRESULT: 401 or 407 challenge source.
- Last completed transition for this HRESULT: authentication scheme and realm.
- Expected output for this HRESULT: credential identity without secret material.
When recording this result, redact credentials, full telephone numbers, private contact lists, and message bodies; for this HRESULT, retain permitted URI domains, header names, byte counts, hashes, transaction identifiers, timestamps, and state transitions.
Protocol and object boundary
| RTC area | SIP authentication and TLS identity boundary |
|---|---|
| Condition to prove | the selected SIP authentication attempt was rejected or could not validate for the challenge |
| Objects to correlate | profile authentication method, challenge headers, realm, credential source, TLS certificate and tunnel |
| Safe corrective direction | correct credentials, realm mapping, or credential selection and cap prompts/retries |
The surrounding protocol rule for this HRESULT is that RTC profile rules tie some authentication methods to TCP or TLS; Basic authentication requires TLS in the legacy API contract; in addition, the path requires that A certificate failure, a challenge mismatch, and invalid credentials occur at different layers and need different remediation.
Verification workflow
- Start from
0x80EE0011and it, then find the method/event pair that first exposed it. - check whether the failure was local before transmission, produced during RTC state validation, or mapped from a remote response.
- the proof step is to preserve scheme, realm, user identity, response status, nonce lifecycle, and credential source without secrets.
- keep the analysis at the right boundary: authentication failure is separate from authorization refusal after successful identity verification.
- after you correct credentials, realm mapping, or credential selection and cap prompts/retries, repeat the smallest reproducer rather than restarting the entire application environment.
Use RTC event state to interpret the protocol trace for this HRESULT, and use the trace to verify what left or reached the host; for this HRESULT, this two-sided correlation identifies the producing layer.
Do not confuse it with
The practical separator for this HRESULT is this: it is tied to the condition “the selected SIP authentication attempt was rejected or could not validate for the challenge”; preserve that producing boundary before choosing recovery; for this HRESULT, compare that boundary with these related RTC values.
RTC_E_BASIC_AUTH_SET_TLS | the profile allows Basic authentication without selecting the TLS transport required by RTC |
|---|---|
RTC_E_SIP_AUTH_TYPE_NOT_SUPPORTED | the challenge requests an authentication scheme the RTC profile or stack cannot use |
RTC_E_SIP_INVALID_CERTIFICATE | the certificate presented or selected for SIP TLS does not satisfy RTC validation requirements |
Facility equality is not semantic equality; route each contrasted value through its own recovery branch.
Recovery and control flow
The owning RTC component should correct credentials, realm mapping, or credential selection and cap prompts/retries; for this HRESULT, it should also settle or cancel its previous operation before callers begin a replacement.
Before retrying it, classify the previous operation as definitely failed, definitely completed, or remotely uncertain; for this HRESULT, that distinction prevents duplicate dialogs, bindings, transfers, or roaming mutations.
Example for this HRESULT: A profile uses credentials for a different SIP realm and repeated REGISTER attempts fail.
Actions that do not address this condition
- An investigation should not never record Authorization header contents or plaintext passwords.
- Another non-solution for this HRESULT is to do not disable certificate checking or lower transport security to make authentication appear successful.
- Do not translate it into a broad “connection failed” label before preserving the RTC symbol and producing phase.
Verification after a fix
A regression test for this HRESULT should reproduce “the selected SIP authentication attempt was rejected or could not validate for the challenge” with the smallest profile, message, session, presence, media, or PINT fixture; for this HRESULT, assert 0x80EE0011, the responsible method/event, and the object state after the result; then, for this HRESULT, change only the decisive precondition and verify that the corrected run leaves no stale transaction or RTC object.
Technical references
- Microsoft profile creation rules — authoritative context for the boundary.
- Microsoft RTC return constants — definitions relevant when reproducing it.
- SIP authentication and TLS — API or protocol rules used to interpret it.
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