i share your pain.
No suggestion so far has worked, For me the wifi wigit disappears, bluetooth remains, while device manager shows there is no issue with the wifi device. I have even tried a second usb external wifi, to no avail ie it shows in device manager as ok but still no wifi widgit and no internet.
Most peoples suggestion are around an http proxy server - im not running a proxy so its not that.
No network reset, reinstall of drivers/driver updates, router reboot, regedit helps.
The only fix is to roll back the update, suspend it for 5 weeks, then when it reinstalls again, rollback. I have done this so many times so far.....
Sorry I don't have a solution....I don't believe one exists for this Microsoft bug. Sorry - that doesn't help unless someone reads this and has a suggestion....