on third-party sites or GitHub repositories. These are often "troll" programs or remakes of the "You Are An Idiot" virus, intended to cause annoying pop-ups or visual glitches. 2. Common Causes of Download Timeouts If a legitimate download (like a game or utility ) fails with a 408 error, the culprits are usually: Gioye/ERROR408.EXE-AND-OMG.EXE - GitHub

ERROR408.exe is primarily known as a creepypasta-style horror game or a fan-made remake of the "OMG.exe" game. Download Sources

If you are looking for the software itself, it is widely recognized as a remake or continuation of another horror game called Official Source

I didn't click anything – it just started downloading on its own. Now it's sitting in my Downloads folder.