When can I leave the program?

Turning on the unenrollment switch does not immediately replace your installed preview build, so it cannot by itself restore compatibility with Ubisoft's anti-cheat software. There is no reliable exit date to infer from build 26220.8754 alone. Check your current Insider channel in Settings and whether Windows Update offers a transition to a supported production build. Microsoft's current guidance allows some channel changes within the same Windows core version without a clean installation, while other transitions require one; the available route depends on your channel and installed build. Keep the opt-out setting enabled if you prefer to wait for an eligible transition. If you need a production installation immediately, back up your files and recovery information before considering a clean installation from official Windows media, which removes local files, applications and settings. Do not disable or bypass the game's security requirements as an Insider workaround.