Go to to ensure "Polycom Communicator" or "USB Audio Device" is selected as your default Input and Output device. 2. Installing Legacy Drivers in Compatibility Mode
Keep the USB cable disconnected from your PC.
Ultimately, for critical work or daily conferencing needs, upgrading to a modern speakerphone is the most reliable, efficient, and future-proof path forward. Yet, for the hobbyist or the nostalgic user, the challenge of resurrecting this rugged and high-quality Polycom device on a modern system remains a tempting project.
Check the box that says and select Windows 7 from the drop-down menu.
The Polycom Communicator C100S is a piece of hardware built to last. While Polycom has moved on to newer models and branded names (Poly), the C100S remains a viable tool for remote work. By utilizing the legacy Plantronics drivers built into Windows 10, you can extend the life of this excellent conference phone without needing to purchase a replacement. Polycom Communicator C100s Windows 10 Driver
Buffer size mismatch or Windows audio enhancements. Fix:
Polycom Communicator C100S Go to product viewer dialog for this item.
Any website asking for $19.99 to "fix your C100s driver" is a scam. The only legitimate driver is free and built into Windows.
Which (Teams, Zoom, Webex, etc.) are you targeting? Go to to ensure "Polycom Communicator" or "USB
Windows 10 sometimes pulls legacy compatibility drivers via Windows Update.
: Users have reported that installing the old Polycom Communicator software on Windows 10 can actually cause driver conflicts or "device not found" errors. It is often more reliable to use the unit purely as a standard audio input/output device. Manual Driver Cleanup
Ensure the device is selected as the default device in both Windows and your communication app (e.g., Zoom/Teams).
| Feature | Polycom C100s (Legacy) | Polycom (HP) P15 | Jabra Speak 510 | Anker PowerConf S3 | | :--- | :--- | :--- | :--- | :--- | | | No (Generic only) | Yes | Yes | Yes | | USB-C Connection | No | Yes | Yes | Yes | | Bluetooth | No | No | Yes | Yes | | Price | $15 (used) | $129 | $179 | $89 | | Microphone Quality | Good (for its age) | Excellent | Excellent | Very Good | Ultimately, for critical work or daily conferencing needs,
Windows will display a warning stating: "The driver selected for this device does not match the hardware selected." Click Yes to proceed.
If you want to try and initialize the dedicated Polycom C100s Software Manager Manager app to use physical button integration, you can force the legacy installer via administrative compatibility tools:
Windows 10 features an extensive library of class-compliant USB audio drivers. It can recognize the hardware natively for audio input and output. the Polycom C100s from your PC.