Wonders Never Cease - Windows Troubleshooter Fixed Wifi Connection - No Internet - Win7

I had quit trying Window's Troubleshooter for anything. Since 1982 (I know, Windows was not born yet) I have not had Window's Troubleshooter fix any problem. But here I sit in a motel and could not get connected. To be more specific, I was connected with a strong wifi signal but no internet. My old friend the impossible problem was back. I tried disabling IPv6 and no luck as usual. Just for kicks I tried the Troubleshooter that is part of the wifi connection window when you don't have an internet connection. TS told me the DHCP (Dynamic Host Configuration Protocol) was not turned on but "obtain IP address automatically" was clearly checked. TS offered to fix it and bingo, it worked. Some configuration must have been stuck, maybe the previous IP. Anyway I have no idea why this happens or how often. I also don't know another way to activate the DHCP without troubleshooter. Possibly setting a static IP and then changing back to automatic would have done it.

I wonder if this has been the problem the other times I have seen strong signal and connection but no internet? It is good to have way to fix this irritation. I hope it will consistently work but I'm not holding my breath.

Microsoft talks about a problem with the "broadcast flag" which is probably the issue. Here are some registry hacks, but I'm going to pass on them for now and rely on Trouble Shooter as long as it works. At least I know how to research the problem. Previous Googling for "no internet connection" (in all it's various iterations) did not lead me to this solution path.

Resetting ipconfig from an admin command prompt may have worked: Ipconfig /release and Ipconfig/renew

You can check the status of DHCP buy right clicking the wifi adapter > status > details.

Another thing to try is netsh winsock reset from an Admin command prompt. Or here is a little WinSockFix program.

I'm adding things as I think of them and may clean up this post later. This has turned into a jumbled mess but there may be an idea that works if you have a connection but can't get on the internet.