rad.exe: which program is it?
rad.exe is a program file that 2 Windows programs install, the best known being Radius. The list below names each one with its publisher and install folder.
| App | Publisher | Latest version | Default install folder |
|---|---|---|---|
 Radius | Radius Project | 0.61.1 | — |
 rad | Brian | 2026.08.29 | — |
Frequently asked questions
Is rad.exe safe?
rad.exe is a normal part of Radius when it sits in the program's install folder and carries the publisher's digital signature. A file with the same name in another folder can be something else: check its signature and hash.
Where is rad.exe located?
In the program's install folder, which the installer chooses; winget puts portable programs under %LOCALAPPDATA%\Microsoft\WinGet\Packages.
How do I remove rad.exe?
Uninstall Radius through Settings → Apps or with winget; the uninstaller removes rad.exe with it. Deleting the file alone leaves the rest of the program behind.