installer protection

Installer protection on Windows refers to mechanisms that prevent or repair damage caused by poorly behaved setup programs. A historical example is Windows 95's system file protection, which used tricks like the sysbckup tool to restore core files overwritten by installers with older versions. This pragmatic safety net ran after the installer finished, quietly fixing compatibility issues. The approach highlights how Windows has long dealt with the challenge of surviving old software's assumptions, not just running new applications. While modern Windows has more robust protection like Windows Resource Protection, the core idea of safeguarding system integrity from installer mistakes remains relevant.