My work computer recently started having a strange problem. The notifications area in the taskbar was showing that I have no internet connection even when everything internet related was working fine.
I could open a web browser and connect to websites, check my e-mail, etc.
This is mostly just an annoyance, however there are some Windows functions that check this and if Windows 10 tells them there’s no connection, they don’t even try to work.
Apparently this is something that happened with a recent Windows update, Microsoft knows about it, but hasn’t figured out a fix yet.
I searched and searched and searched for a solution and finally found something that worked for me. I’m posting this on the off chance that someone else having the same issue finds this post helpful.
Here’s what I found:
In device manager, go to the network adapters section. Find your actual physical ethernet adapter, you may have several virtual adapters if you use any VPNs or anything like that…you’re looking for the actual ethernet connection (it’s possibly that you could have more than one ethernet adapter; if so you may have to do this more than once…I’m not sure).
In the Properties dialog, go to the Advanced Tab, click the IPv4 Checksum Offload property and change the value to “Disabled”
Click the OK button.
That’s it. That fixed it for me. I checked all the other network adapters in my system and the physical ethernet adapter was the only one that even had that setting. As I mentioned, if you have more than one physical adapter (like if you have a docking station for your laptop, your laptop may have one adapter and the docking station another), you may have to do it for the other physical adapters, but on mine there was only the one.
I hope that helps someone somewhere.