unblock-all-files.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Folder\shell\unblockallextension]
@="Unblock All Files"
"Icon"=" c:\\windows\\system32\\imageres.dll,54"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Folder\shell\unblockallextension\command]
@="PowerShell.exe -NoLogo -NoProfile -WindowStyle Hidden -Command \"& { Get-ChildItem -Path '%1' -Recurse | Unblock-File }\""