What does HRESULT 0xC00D11A3 (NS_E_WMP_MSSAP_NOT_AVAILABLE) mean?

NS_E_WMP_MSSAP_NOT_AVAILABLE

Diagnosing NS_E_WMP_MSSAP_NOT_AVAILABLE in the Windows Media Player playback path

NS_E_WMP_MSSAP_NOT_AVAILABLE (0xC00D11A3) is returned when the protected playback path requires a compatible Secure Audio Path component that is unavailable.

Record what the Player had already completed because later retries often replace the original evidence. The specific rejected condition is the protected playback path requires a compatible Secure Audio Path component that is unavailable.

Controlled playback comparison

1. Start from the original call and log 0xC00D11A3 together with its object and operation phase.
2. Collect content rights, required protection level, renderer path, installed security component version and revocation status before changing the machine.
3. Use this single-variable test: test unprotected content through the same audio device, then preserve the protected-content HRESULT chain.
4. Repeat on a fresh object if the original predates a configuration, device or resource change.
5. Validate the expected next operation, not just initial open or object creation.

Actions that obscure the cause

• disabling output protection to force playback.

Technical references

• Supported protocols and file types
• Using Windows Media in DirectShow
• Working with codecs
• DirectShow filters
• Microsoft HRESULT registry