Q:

2 Computers can't ping each other

I have 3 devices connected to a WiFi router.

192.168.2.114 - Windows 10 PC
192.168.2.119 - Linux Manjaro PC
192.168.2.101 - Android Phone

Router has 192.168.2.1

All devices can ping the router.
All devices can ping the phone.
The phone can ping all devices.
The Windows PC can't ping the Linux PC and the Linux PC can't ping the Windows PC.

How is that possible? Firewalls are off as well.

A:

I resolved it by restarting the router.

