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MILERR_MROW_READLOCK_FAILED
MILERR_MROW_READLOCK_FAILED is a Windows Media Integration Layer (MIL) HRESULT. It indicates that MIL failed to obtain the read lock required to access a shared rendering resource.
What to check for MILERR_MROW_READLOCK_FAILED
- Check lock contention, ownership, and resource lifetime for the shared object.
- Keep write-held intervals short and avoid acquiring the same resource lock in conflicting orders.
- Retry only when the API contract permits transient lock acquisition failures.
Microsoft documentation about WPF hardware-accelerated rendering
Diagnostic interpretation of MILERR_MROW_READLOCK_FAILED
MILERR_MROW_READLOCK_FAILED has the HRESULT value 0x88980097. AllStat records the condition as “MROW attempt to get a read lock failed.”. For MILERR_MROW_READLOCK_FAILED, in practice, interpret that wording at the boundary owned by the Windows component or COM interface that returned the HRESULT, rather than treating the value as a generic Windows message.
Evidence to capture for MILERR_MROW_READLOCK_FAILED
- Record the exact COM method or Windows API, its input object, the calling thread, and the full 0x88980097 value before a wrapper converts it to an exception or Boolean result.
- Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions MILERR_MROW_READLOCK_FAILED or the milerr / mrow / readlock operation.
- For MILERR_MROW_READLOCK_FAILED, compare the failing machine with a working one at the same configuration boundary: component version, policy, registration, identity, and target resource.
Retry and recovery for MILERR_MROW_READLOCK_FAILED
Retry MILERR_MROW_READLOCK_FAILED only when the owning API documents a transient state or after the condition described as “MROW attempt to get a read lock failed.” has changed. For MILERR_MROW_READLOCK_FAILED, configuration, policy, format, and authorization failures normally require correction first; an immediate loop can hide the original call site and add secondary errors.
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