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MF_E_NET_SESSION_INVALID
MF_E_NET_SESSION_INVALID means the session state referenced by the client is invalid. This may follow expiration, reconnect, failover to another backend, or a previous protocol error.
What to check
- Discard the old session state and establish a fresh media session.
- Check session affinity and timeout behavior on load balancers and reverse proxies.
- Look for a preceding redirect, disconnect, or authentication failure that invalidated the session.
Microsoft: Networking in Media Foundation
Microsoft: Implementing reverse proxy with Windows Media Services
Microsoft: Media Foundation client logging
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