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MF_E_NET_CACHESTREAM_NOT_FOUND
MF_E_NET_CACHESTREAM_NOT_FOUND means the requested media stream was expected in a cache but was not present. It can follow stale cache state, a changed origin resource, or an incorrect cache key.
What to check
- Verify that the requested resource still exists at the origin.
- Clear only the affected application or proxy cache after confirming that its stored object is stale or incomplete.
- For legacy Windows Media Services cache proxies, check cache freshness and publishing-point behavior.
Microsoft: Persisting cached content in Windows Media Services
Microsoft: Windows Media Server cache proxy functionality
Microsoft: Networking in Media Foundation
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