Fake Windows Update
The fake Windows update prank shows a picture-perfect "Working on updates" screen that creeps the percentage up and never finishes. Open it on a Windows PC, press F11 for fullscreen, and walk away — they'll sit there watching a number that refuses to move, because it is designed never to reach 100%.
It works because everyone has genuinely lost half an hour to this screen. Nobody force-restarts a machine mid-update. On a Mac instead? Use the fake macOS update. Want the crash rather than the wait? The blue screen of death is the harder hit.
Press F11 for maximum realism. Tap or press Esc to exit.
Add the prank to their home screen and it runs like a real app — no browser bar, no tabs, no URL, nothing to give it away.
How to use the fake windows update prank
- Tap Launch Full-Screen Prank above (or press F11 once it's running).
- Leave the device where your victim will find it. It'll look completely real.
- When they panic, tap the screen or press Esc to reveal it was a joke.
For laughs only. Nothing here installs, downloads or damages anything — it's all harmless CSS/JS in the browser. It's a staple of April Fools' Day pranks and works any day of the year. Just keep it kind — see what makes a good prank.
Frequently asked questions
Is this a real Windows update?
No. Nothing is downloaded, installed or changed — it's a full-screen web page that mimics the Windows update screen. Close the tab and the "update" vanishes, with the PC exactly as it was.
How do I make a fake Windows update screen?
Open this page on the PC you want to prank, press F11 to hide the browser bar, then walk away. The "Working on updates" screen and its creeping percentage auto-play — you don't need to set anything up or install a thing.
Does the percentage ever reach 100%?
Deliberately not. It climbs to roughly 99% and stalls there, which is the most maddening part of the real Windows update experience — the bit where you start wondering whether it has frozen and whether touching it will break the machine.
How do you get out of the fake update screen?
Press Esc or F11 to leave fullscreen, then close the tab. Nothing on the computer has changed, so there's no restart, no rollback and no repair needed.
Will this work on Windows 11 as well as Windows 10?
Yes. The update screen has barely changed between versions — same dark background, same spinner, same "Don't turn off your PC" line — so it reads as authentic on either. It also runs in any modern browser, so it looks right on a work laptop or a home desktop.
Can I get in trouble for using it?
The page is harmless and legal. The risk is in the context: leaving it running on a machine someone needs for real work, or on shared IT equipment where a technician may waste time investigating a fake update. Keep it to people who'll laugh, and own up before anyone calls support.
Does the fake Windows update work on a phone?
It will load, but it won't convince anyone — Windows update screens don't appear on phones. For mobile targets use the fake iOS update or the fake Android update instead, which mimic the right operating system.
How do I stop it looking like a browser tab?
F11 is the whole trick — a visible address bar is the only real giveaway. Do it before you hand the machine over, and close any other tabs first so nothing shows through if they hit Esc by accident.