Can't connect to wifi - 'wifi doesn't have a valid IP configuration'

[OldGeek34]

I just ran into this problem on one of our three home computers.  I read all of the comments on the internet regarding this problem. None of the answers seemed to apply and most responses were that none of them worked.  Finally, I looked at the network set up on my other two computers and I noted a difference in the one that stopped connecting to the network.  The network setting read 'unknown network' and was set to public.  I started investigating the problem and noticed that the problem computer was not set to a group, so I used the windows 10 homegroup setup and at some point is flashed a dialogue box up saying that this group required a private network setting.  It gave me a button saying 'make network private.  I clicked on it and wah la, it changed my network to private.  I rebotted my computer and connected immediately connected to the internet.  I am not sure if there is another work around to change your network setting from public to private such as deleting you network setting and creating a new one from scratch, but this worked for me.

[lucyshaww]

thankyou so much! i had tried everything

[Rajarajan_K]

Use NetShell utility (netsh.exe) command to perform the task. 1) Open the command prompt as Administrator. Search ‘cmd’ and right click on cmd then select ‘Run as administrator’ as below. OR Press the Windows Key + X + A to launch the Command Prompt with administrator rights. 2) Type following commands – netsh winsock reset catalog (Reset WINSOCK entries to installation defaults) netsh int ipv4 reset reset.log (Reset IPv4 TCP/IP stack to installation defaults) 3) Reboot the computer. The Problem: One of the above reset command removes all persistent static route entries from your Windows 10 computer. I faced this issue and I had to add those static routes again by ‘route add’ command. This will mostly solve the problem of limited connectivity issue on Windows 10 or 8.1. 4) If you are still facing the issue and your Windows 10 or 8.1 can’t connect to internet and other local network resources, continue below steps. The following few more netsh commands may fix the problem. Make sure you are entering below commands in command prompt which was opened as Administrator. netsh int tcp set heuristics disabled netsh int tcp set global autotuninglevel=disabled netsh int tcp set global rss=enabled I’m sure one of the above command may fix the issue or at least make your Windows 10 network faster. 5) If your wired network is fine, but you are having trouble in wireless network only, then you can change the power options and wake up the WiFi Adapter. Right click on the WiFi adapter and select Properties. Click on ‘Configure’. On the ‘Power Management’ tab, uncheck the below option. This will prevent Windows 10 to turn off the WiFi adapter when it goes to sleep or hibernation mode. Because when the laptop resumes from sleep, the WiFi adapter may not wake up and work properly. So, avoiding this feature may help in having proper wireless network connectivity in Windows 10. 6) If there is a 3rd party antivirus and personal firewall software such as BitDefender also can disturb the network connectivity in Windows 10/8.1. So