You can download the Polycom Communicator C100s Windows 10 driver from the official Polycom website:
If you want, I can:
Wait 30–60 seconds for Windows Update to search its online catalog. Polycom Communicator C100s Windows 10 Driver
Ultimate Guide to Polycom Communicator C100s Windows 10 Drivers (2026) You can download the Polycom Communicator C100s Windows