Right click on start menu and select search.

Type cmd or command

then select run as administrator

command prompt will open as administrator.

type the below command

SFC /SCANNOW

make sure SFC<give a space><forward slash>SCANNOW(without spaces)

SFC /SCANNOW

and then hit enter.

This will initiate the system file checker scan and this will be finished.

Then type the following

netsh winsock reset

and hit enter.

Restart your computer and you can use it.

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