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Windows 11 Volume Synthesizer displays gray bars
The system volume synthesizer interface displays unresponsive gray bars or areas, preventing normal slider adjustment for specific applications and affecting sound control. Please provide a method to...
Press Win + R, type services.msc
Find these services (in order):
Windows Audio
Windows Audio Endpoint Builder
Remote Procedure Call (RPC)
For each: Right-click → Restart (Windows Audio first)
After restarting all three, test the volume mixer