3 ways to resolve DNS error - cant browse websites.

Method 1:
Control panel > Network  & Internet > Change adapter settings > Right click on currently active connection

> Properties > Select IPv4

> Click properties

 > use DNS server addresses: Primary= 8.8.8.8 Alternate= 8.8.4.4 > Click OK,OK.

Method 2:
Open CMD with administrative privilege > Type: (netsh int ip reset resetlog.txt) press enter; Type: (netsh winsock reset) press enter > REBOOT

Method 3:
Open CMD with administrative privilege > Type: (ipconfig /flushdns) press enter > REBOOT

From these given methods no.2 worked for me.
Amen.