Diagnostics, optimization and security panel for Windows — one single file, no install.
Download PruPru.exePruPru.exe doesn't have a publisher's digital certificate yet — that's why Windows Defender SmartScreen blocks the first run of any new program, even a safe one. It's not a virus, Windows is just being cautious with an unfamiliar file. The two steps below fix it.
As soon as PruPru.exe opens, this screen shows up first.
The screen expands and unlocks this second option — it's what opens the app.
Right-click PruPru.exe → Properties → check "Unblock" at the bottom of the General tab → OK. The SmartScreen warning won't show up again.