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MF_E_REBOOT_REQUIRED
Where the result originates
MF_E_REBOOT_REQUIRED means a Media Foundation component installation, update, registration, or repair has reached a state that requires a Windows restart.
The result comes from the component setup or servicing operation, not the media payload. A representative case is a platform update replaces in-use media binaries and defers final registration until restart.
Evidence to preserve
the installer or servicing log, pending reboot state, replaced DLLs, component version, process architecture, and original setup HRESULT.
Evidence that survives retries
A controlled verification sequence
- Record and verify: the installer or servicing log, pending reboot state, replaced DLLs, component version, process architecture, and original setup HRESULT.
- Run the controlled comparison: restart once, then repeat the same component operation before changing any codec pack or registry setting.
Nearby results that mean something else
| HRESULT | Meaning in the standard description |
|---|---|
MF_E_INSUFFICIENT_BUFFER | Insufficient memory for response. |
MF_E_NO_INDEX | The index that is necessary for the requested action is not found. |
MF_E_ALREADY_INITIALIZED | This object has already been initialized and cannot be re-initialized at this time. |
Here, MF_E_BAD_STARTUP_VERSION is an API/runtime mismatch that a reboot does not normally correct.
Repair at the owning layer
For this occurrence, complete the restart and verify component registration; persistent recurrence requires inspecting setup logs rather than repeated reboots.
Authoritative references
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