While you can easily get high-quality audio input and output working, you must accept a few limitations due to the age of the hardware:
For many users, this legacy speakerphone still offers superior audio to modern, cheap alternatives, provided the native Windows 10 USB drivers recognize it correctly.
How to Install and Use the Polycom Communicator C100s on Windows 10 Polycom Communicator C100s Windows 10 Driver
Sometimes, pressing the physical "+" and "-" buttons on the device will change the internal hardware volume of the speaker but will not change the Windows 10 software volume slider. For the best experience, set the physical device volume to maximum and control your levels via the Windows taskbar. Troubleshooting Common Windows 10 Errors 1. "Device Descriptor Request Failed" (Error Code 43)
| Issue | Solution | |-------|----------| | Device not detected | Try a different USB port or cable. Avoid USB 3.0 ports if issues persist. | | No sound / mic | Right-click speaker icon → → Playback tab → set C100s as Default Device . | | Echo during calls | Reduce speaker volume or enable acoustic echo cancellation in your softphone settings. | | Driver error in Device Manager | Uninstall device, scan for hardware changes, or run Windows Update. | While you can easily get high-quality audio input
Since no official driver exists, follow this verified process to force Windows 10 to recognize and use your C100s correctly.
The most successful method for getting the original Polycom Communicator software to run on Windows 10 is using the final official driver package released for Windows 7/8 and running it in Compatibility Mode. Troubleshooting Common Windows 10 Errors 1
To find the correct driver, you need to identify the version of your Polycom Communicator C100s. You can do this by:
Disconnect any other external USB microphones or webcams to avoid conflicts.
Please wait... it will take a second!