Hi, y'all. I don't know if this topic belongs in Win10, since it's a bug, or in Networking. Chose Win10, as you might have this problem too. I'm up-to-date except for the latest Windows Defender, same build as you are probably on, 10240. Machine is Dell 6510, 4GB RAM, dual boot 8.1 and 10, else all standard stuff (no special cards, think it has Bluetooth but I never use it, etc).
Here's the bug: all of a sudden, after being idle for more than a day, suddenly Win10 tells me I've no internet connection, even though the Ethernet is plugged in. So, I opted for its offer to fix the problem, it did that green moving thingy to say it was resolving the problem, and finally it said I didn't have a valid IP Configuration. Well, I'm on Blast Xfinity, so I knew the IP was fine, same as for all my other machines, so did a cold reboot. Waited. Turned on. Same results.
Turned it off, and THIS time booted it in Win8.1: internet connection just fine. So then, did a soft boot, and back into 10. Internet connection? Just fine. So it reset, but I couldn't have done that without dual-boot setup.
Something to keep in mind..
You got any other ideas that might help others? Because with Win10, being connected is more important than ever. Thank you for your time and your input!
Edited by brainout, 18 July 2015 - 10:49 PM.