This appears to be specific to RSAT, and has impacted a lot of people on Windows 11 22H2. It is unclear if the problem is with RSAT broadly, or if it is a problem specifically of upgrading from Windows10 to Windows11 with RSAT.
In Danielle’s case above, we found that netsh.exe was crashing, and went digging into the RSAT install, but those capabilities came up as not being installed according to windows11. But in her wmic qfe update history we did see that she had KB2693643 installed, which was RSAT related.
In her case, running wusa /uninstall /kb:2693643 allowed us to uninstall it, and after a reboot her VPN connections started working again. We did see that some other folks had RSAT installed in their capabilities in Win11, and for them removing those capabilities seemed to fix their issue. So if your scenario doesn’t exactly match this but you do have those capabilities present – try that path.
A quick and easy test for if this is affecting you is to just run netsh on the cli. If it doesn’t give you the netsh> prompt it is probably crashing (which you can confirm in your event log) and this is probably what you’re dealing with.