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MF_E_NET_STREAMGROUPS_NOT_SUPPORTED
MF_E_NET_STREAMGROUPS_NOT_SUPPORTED means the application requested stream-group behavior that the current network source does not support.
Diagnostic discriminator: Run the same presentation with default stream selection. Success on that path isolates unsupported stream-group control; packet loss, codec replacement, or server availability should be investigated only if the default path also fails.
What to check for MF_E_NET_STREAMGROUPS_NOT_SUPPORTED
- Use the default stream selection path unless the source explicitly exposes stream groups.
- Check that the media URL is being opened by the intended source resolver and protocol handler.
- Treat this as a capability mismatch, not as evidence of packet loss or server unavailability.
Microsoft: Networking in Media Foundation
Microsoft: Supported protocols for Media Foundation network sources
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