Developer Mode Won't Authorise on Meta Quest 3?

I've got a couple of VR projects I've been working on in Unity (6000.0.50f1) and both have been working fine, I could hit Build and Run and I see the results in my Quest 3 headset which is connected by USB.

Today I hit that button and I am told Unity can't find any Android devices.

• I have clicked the Notification to enable USB in the headset.
• I can see the Quest 3 in Windows Explorer and access its file structure.
• Developer mode is still active and has been turned on and off to check. This has been done on the App and the headset itself.
• I can still use all my side-loaded apps stored locally on the headset.
• I have reinstalled the adb driver in Windows. Running 'adb.exe devices' lists nothing.
• I have updated all Unity Packages.
• I have updated Unity to 6000.058f2 LTS.
• No amount of reboots to either device helps.

I have since found that SideQuest won't connect either, my connection status on that software passes all checks (including Dev Mode Enabled and ADB Detected) except for Device Authorisation. 

I have deleted my .android folder on Windows to no effect.

Short of a factory reset what are my options here??