Windows 10: Logitech c920 Webcam not working

Since the updates to Windows 10 my logitech HD Pro Webcam c920 is no longer recognised by my computer.I have been through weeks of trying to find a solution and none that have been suggested have worked

:)

 

Logitech c920 webcam no longer works.

I use a Logitech c920 webcam with my Dell 5567 laptop.

Setup is Windows 10 version 1709, latest.

After the latest Windows update, when I open the Logitech c920 software interface the webcam is not detected. But if I click on Quick Capture, I can see images but the webcam controls and advanced settings are no longer available. When I open up Preferences,
the microphone setting does not function.

I've already done a complete reinstall, several times, but to no avail.

If I use Skype and select the c920, again the imaging/video works. But also cannot open the c920 webcam settings from within Skype video settings.

Is there a fix for this?

 

Logitech C920 Webcam


just to add more spookiness, the Settings option in Skype shows that the C920 is being used:





..so it will run as an app from within Skype, but not as a stand-alone program via the Desktop Shortcut
- which is a bit odd..

I uninstalled the XBox App from the Start Screen, just in case the webcam was defaulting to that software,
- but no luck yet.. (??)

 

Logitech C920 Webcam


I've just noticed that the Windows Firewall includes an item called "Windows Camera"



- I wasn't aware that this even existed..
- is it possible that the Logitech Webcam software is defaulting to this location?