If you see recently installed programs disappear after a restart on Windows PC, make sure you have installed it for all the users & then follow this guide to fix it.

Windows 10 users who aren't upgrading to Windows 11 need to enroll in a Microsoft's Extended Security Updates program to receive critical security updates.

If you cannot open and run any Program when you click on it, maybe soon after login or after Windows Update in Windows 11/10 take these steps to fix the issue.