Microsoft may have broken your VPN with Windows updates
If your VPN has stopped working in Windows 10 or Windows 11, you can take some comfort in the fact that you're not alone. The April update for the operating system, or the preview version, is causing VPN connection failures.
It is not clear quite how widespread the problem is, nor just how many VPN tools are affected. However, Microsoft is aware of the issue but is offering little in the way of help at the moment.