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EAS_E_REQUESTED_POLICY_PASSWORD_EXPIRATION_INCOMPATIBLE
EAS_E_REQUESTED_POLICY_PASSWORD_EXPIRATION_INCOMPATIBLE — 0x80550005
The short system message identifies the immediate outcome, but the useful interpretation is narrower: password-age interval compatibility. In this case, the requested expiration interval conflicts with the system minimum password age, creating a policy combination Windows cannot satisfy.
Meaning in the subsystem
EAS compliance is a policy merge, not a single password test. Windows evaluates the requested settings against local accounts, connected accounts, domain or management policy, and operating-system capabilities; the individual fields in EasComplianceResults show which requirement changed the decision.
Do not collapse this result into a nearby status. The problem is the relationship between two policy intervals, not merely an already-expired password. Compare lifecycle, identity, caller, and first API.
Minimum useful evidence
| Preserve before changing state | Diagnostic value |
|---|---|
| Requested maximum password age and effective minimum password age | Separates contract failure from environment. |
| Policy sources and precedence for both values | Creates a stable before/after control. |
| Account types to which local expiration is applied | Tests whether the first boundary moves. |
| Current password set time and compliance result | Pins evidence to one attempt. |
Identifiers, timestamps, versions, counts, state flags, hashes, and redacted paths normally provide enough correlation. Keep credentials, private keys, message bodies, recovery material, and personal data out of routine incident logs.
Isolate the responsible condition
- Choose a maximum age greater than the minimum age in a test policy; keep every other input fixed and record the first event that differs from the failing run.
- Remove one policy source and recompute the effective pair; use a disposable or backed-up environment when the comparison changes boot, security, device, queue, or encryption state.
- Evaluate local accounts separately from domain/Microsoft accounts; retain one negative control so that a broad workaround is not mistaken for a root-cause correction.
Do not use repeated retries as the primary test. In this case, a successful later attempt may reflect a new object, refreshed policy, restarted service, different token, or completed background transition, so record exactly what changed between attempts.
Avoid the common misdiagnosis
Interpret the controlled tests as evidence about the returning boundary:
| Observed result | Interpretation |
|---|---|
| The minimal or known-good comparison succeeds | The control works; inspect production-specific state. |
| The control fails at the same first operation | The control also fails; inspect host/provider evidence. |
| A new HRESULT marks another boundary | this boundary moved; diagnose the new status separately rather than treating it as confirmation that the entire operation is fixed. |
Regression proof
Apply the smallest change that addresses the first rejected condition: Align minimum and maximum password ages across EAS, local, domain, and MDM policy sources. Preserve the pre-change configuration or trace.
Close the incident only when boundary tests prove that the effective expiration interval always permits a legal password change cycle. Repeat under the original identity and state. A different environment is comparison, not proof.
Technical references
The following documentation is most relevant when checking the code against the actual Windows contract for this condition:
- Microsoft Open Specifications: HRESULT values.
- Microsoft: Exchange ActiveSync Policy Engine overview.
- Microsoft: EasClientSecurityPolicy.
- Microsoft: CheckCompliance.
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