: Some users report "terrible noise" or scratching sounds when using both the microphone and speaker simultaneously on newer systems.
Some users have accessed older drivers via Driver Scape . Setup and Troubleshooting Tips
: 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 Polycom Communicator C100s Windows 10 Driver
Polycom Communicator C100s Windows 10 Driver: Full Compatibility Guide
Despite its age, the C100S remains popular for its hardware quality: High-Fidelity Audio : Some users report "terrible noise" or scratching
What (if any) do you see in the Device Manager?
These are the voices of the damned.
For further troubleshooting, you can visit the Polycom Communicator C100S discussion on the HP Support Community .
For Windows 8, 8.1, and 10, you generally do not need to download or install any specific driver software. Windows has built-in, generic USB audio drivers that will recognize the C100S and make its basic speaker and microphone functions available. Simply plug the device into a free USB port. It is often more reliable to use the