How to enable Microphone & Other Devices in RDP
1. Open RDP on your computer.
2. Click on "Show Options"
3. Click on "Local Resources"
4. Under "Configure remote audio settings" click on "Settings..."
5. Under "Remote Audio Recording" click on "Record from this computer" then click "OK"
6. Under "Local Devices and Resources" click on "More..."
7. Check all boxes under this menu to enable all devices in RDP. Then, press "OK".
Once you have finished these steps, click on "Connect" and your devices will be enabled in RDP.