Extensions are remembered in Application Guard mode after fully closing it and the Edge browser

HotCakeX This all sounds as expected behavior. With persistence disabled, the extensions (and other settings/data) will persist as long as the container VM exists (it will be destroyed when the host shuts down). The container VM might be destroyed before that -- you can force the issue by restarting the hvsics service for example.

You can see if you have persistence policy on/off at edge://application-guard-internals/#host (look for "container persistence" in the "Policies" section).

It would be unexpected for the extension settings to outlive the container (when persistence is disabled) -- that they are going away with a restart indicates this is all working.

Tying the profile (settings) lifetime to the browser lifetime (instead of the container lifetime) is something we are discussing internally.