Windows 10 - internet connectivity dies

Thanks update KB3201845

Might need to reset winsock
    netsh winsock reset

OR
Might need (unbelievable but true - I've seen it)
   scandisk  or
   chkdsk c: /f


Reference
https://betanews.com/2016/12/10/windows-10-suddenly-killing-internet-connectivity-for-some-users/