Windows update KB5033375 causing wifi connectivity issues

Question

I have a number of users with Lenovo T14 laptops and once they install the update KB5033375 they are unable to connect to their offices primary wifi SSID that utilizes Radius for authentication. I have tried rolling back Wifi Drivers, updating drivers and other resolutions. The only fix I have found is to uninstall the update. I utilize MS Intune Update rings and don't have the functionality to pause Quality updates which this update is. Any ideas about how to resolve this other than rolling back the update as I would think it is important from a security perspective.

Also rolling back the update is a bit of a task as there are about 50 users with the issue now.

Answer 1

Settings >> Windows Update >> Update history >> Scroll Down >> Uninstall Updates

Don't forget to pause updates for a while after that or it will reinstall it again like in my case. I seriously hate Microsoft right now...

Answer 2

My Lenovo Slim Pro 9i is just a little bit over 2 weeks old from Costco. After the Windows 11 KB5033375 security patch yesterday, my internet became super slow and unusable. Google Chrome kept throwing DNS errors and other errors. I tried a ping test "www.google.com" and it wouldn't even resolve half of the time. When it did resolve, I was getting delays of 1-3 seconds (not milliseconds) with a 30% packet drop. After the update, a reboot did temporarily solve the problem, then after another reboot the issue came again, so I ended up rolling back the update. No WiFi issues before the update. I rolled back the update and magically my WiFi is working again properly. I've temporarily paused Windows Updates for a month. The update seems to be bugged. Submit a ticket in Feedback Hub to let Microsoft know you're having problems. I think Microsoft should pull this update immediately considering the number of problems I've found with it through a quick search.

Answer 3

I'm glad you asked this! We just upgraded our Lenovo X13s to KB5033375 and could no longer connect to Radius.

The Radius logs were reporting success, but the Lenovo was just cycling between connecting and "can't connect"

I backed out this update and it works fine.

Answer 4

How did you roll back the update? It doesn't show up as able to be uninstalled on my computer and I am having a similar issue but with no internet at all as the network adapter suddenly stopped working with the update

Answer 5

Are you sure you installed it? Does it show up in your update history? Seems a bit weird because this is a 3 day old update.