Found a fix here just in case...

# on Jolla
1) enable dev mode
2) set password
3) optional: set ip address for usb connectivity

# Then configure Win host:
1) connect your Jolla with usb to the Win machine
2) from the pc, open network & sharing center and select "Change adapter settings" or Win+R and type control netconnections
3) open the adapter labeled with "Remote NDIS based Internet sharing device"
4) go to properties
5) select entry for IP V4
6) enter a static ip (in the same subnet of the phone). So if your phone has 192.168.2.15 (default), you can put 192.168.2.10 for example
7) set phone ip address as gateway & dns entries as well.
also disable
-Internet Protocol Version 6 (TCP/IPv6)
-Link-Layer Topology Discovery Mapper I/O Driver
-Link-Layer Topology Discovery Responder


Regards,

J4ZZ