After upgrading both Desktop & Laptop to Win 10, I am not able to JOIN Homegroup. Both computers show the option Homegroup: READY TO CREATE. Nomally when a Homegroup is created through one of the computers in network, Second or other computers should show it as READY TO JOIN. But that is not happening.

Internet works on the both computers. I can even see each other computer in Network. But Laptop, most of the times, is unable to open up shared Desktop and shows Path error.

Using TP Link MR3420 Wifi Router. DHCP enabled.
Desktop using Belkin Wifi Dongle to connect to wifi network.
Laptop (Lenovo) has builtin Wifi.

Any suggestions/solution please ?