When you use the Windows Network Diagnostics Troubleshooter to troubleshoot connection issues, you may receive one of the following messages depending on your problem:
- WiFi doesn’t have a valid IP configuration
- Ethernet doesn’t have a valid IP configuration
- Wireless Network Connection doesn’t have a valid IP configuration.
If you receive such an error message then this post may be able to help you. Go through the list of suggestions and then see which one or more of these would apply in your case.
WiFi or Ethernet doesn’t have a valid IP configuration
1] Reset your wireless router or modem and restart your Windows computer and see if that makes the problem go away. If this problem occurred recently, perhaps you want to restore your computer back to a good point.
2] Update the Network Adapter Driver. From the WinX Menu, open Devices Manager and expand Network Adapters.
Here locate your Network Adapter Driver, right-click on it and select Update Driver Software to update the device driver.
3] Renew your IP address and see if that works for you.
4] Internet connection problems can also be traced to a corrupted DNS cache. Resetting or Flushing the DNS Cache is an easy fix to many of these problems.
5] Reset Winsock and see if that helps you.
6] Check if your Router is set to limit the number of DHCP users. If so, you may need to increase the number.
7] Type the following commands in Run box and hit Enter to open the Internet Connections Troubleshooter:
msdt.exe -id NetworkDiagnosticsWeb
Run it and see if it fixes your problem.
8] Run the Network Reset Tool and see if that helps.
9] If nothing helps, perform a Clean Boot and then manually try and identify which process or program is interfering and causing the problem.
10] If you need more ideas, this post on troubleshooting Network & Internet connection problems is the one you want to visit.
Let us know if anything helped you or if you have other ideas.