External Logitech Webcam not recognized on Macbook Pro

Refer to Link Below from Apple on this very topic

If your Mac asks you to allow an accessory to connect - Apple Support

Excerpt from link above

When you use a new or unknown USB accessory, Thunderbolt accessory, or SD card with your Mac laptop with Apple silicon and macOS Ventura or later,

blt613 wrote:

• Device details:

Macbook Pro

• Apple M3 Pro

• macOS Sequoia 15.6.1 (24G90)

• Logitech Webcam C925e

• Product ID: 0x085b

• Vendor ID: 0x046d (Logitech Inc.)

•  Version: 0.16

•

I have tried connecting the webcam via:

USB-C to USB-A adapter (as direct as possible) - the adapter is from google pixel

• USB-C to 4-port USB-A hub from startech.com

• via LG monitor as usb hub.

None of the above works. When plugged in, the webcam flashes green LED twice and then nothing.

The device does show up in the System Report under the USB tree (but not in the Camera list).

It does not show up in any apps (Facetime, Zoom, etc). And yes, I have permissions enabled in Private & Security -> Camera for all the apps I care about. They all only give the choice of the builtin "FaceTime HD Camera".

hmmm...ref:

https://hub.sync.logitech.com/c925e/post/webcam-setup-IFyMxItZ599fiU2

this is the only adapter I ever needed:

USB-C to USB Adapter - Apple

A SafeBoot Start up your Mac in safe mode - Apple Support will sort many anomalies

Login and test. Reboot as normal and test. Caches get rebuilt automatically.