Channels do not send audio to master fader

Good day,

This morning when i started up Cubase 12 my channels did not send audio to my master fader. first i thought it was a driver issue but its not.

Last night i didnt had any problems and 8 hours later this.

anyone having the same problems?

Was your audio interface unplugged? It sounds like the routing is lost for some reason. Check in audio connections and studio setup to make sure the correct audio interface is selected. When you have done this and corrected any problems. Check the track routing and make sure they are all routed to the master and your outputs are assigned to the master.

I have seen this happen but only if an interface was off , or plugged in or started too late. It’s not a problem with any version. Mine is fine

Maybe the interface is blocked by another application?