Many of my customers have contacted me in the last week because they cannot get on the Internet – they sometimes see a message about not having a valid IP address.
This seems to have happened after a recent Windows 10 update. In every case, setting a static (fixed) IP address has fixed the problem. Here’s how to set a static IP address in Windows, and more extensive article here, which also covers Macs.
If you don’t want to use a static IP address (which can be undesirable on larger networks: every device on the network – printers, computers, etc – needs to have a different IP address, and if you are assigning them yourself it can be hard to keep track) you could instead try this solution:
Open a command box with elevated privileges and type (or copy and paste) these two commands :
netsh winsock reset catalog netsh int ipv4 reset reset.log