What does HRESULT 0xC00D1B8B (NS_E_WME_VERSION_MISMATCH) mean?

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Description:

The supplied configuration file is not supported by this version of the encoder.%0

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NS_E_INPUTSOURCE_PROBLEM	NS_E_NO_REALTIME_PREPROCESS

NS_E_WME_VERSION_MISMATCH

NS_E_WME_VERSION_MISMATCH: follow the state transition

For NS_E_WME_VERSION_MISMATCH (0xC00D1B8B), the failed transition is: Windows Media Encoder components from incompatible versions are being used together.

Capture before retry

capture encoder executable and COM component versions, registration paths, process bitness, and the first version check that fails.

Prove the fix at the owning API

repair the installation so the encoder loads a consistent component set, then repeat the same startup or automation call. Keep unrelated inputs unchanged so a changed result has diagnostic value.

Technical references

Windows Media Encoder SDK.
Windows Media profiles.

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