Windows File Protection (WFP) can prevent programs from replacing important Windows system files. Programs must never overwrite these files because the operating system and other programs will use them. By protecting these files, you can prevent problems with programs and operating systems.

WFP can protect important system files installed as part of Windows (for example, with. dll，。 exe，。 Ocx and. Sys extension and some True Type fonts). WFP uses the file signature and the directory file generated by code signing to verify whether the protected system file is the correct Microsoft version. Replacing protected system files only by the following methods is supported:

Use Update.exe to install Windows Service Pack.

Use Hotfix.exe or Update.exe to install patches.

Use Winnt32.exe to upgrade the operating system.

Encryption means adding a password ... Hiding means hiding ... Display: Start-Settings-Control Panel-Folder Options-View-Show all files and folders-Apply and you will be OK. If you want to hide, put it back.