What is a fake macos update?
A fake macOS update screen is a web page imitating the Apple software update installer, with a progress bar and a growing time estimate.
A dark macOS-style update screen with a grey progress bar and a remaining-time estimate that quietly gets worse instead of better. The estimate growing is what sells it — that is exactly what real installers do, and it is the detail people remember.
For a prank that implies damage rather than delay, there is the broken screen.
How do you use the fake macos update?
Go fullscreen so the menu bar and dock are hidden, then leave the machine. Press Escape twice to exit.
- Go fullscreen so the menu bar and the dock are hidden.
- Leave the machine. The bar creeps forward and the time estimate climbs.
- Press Escape twice to exit fullscreen and close the effect.
Is anything really being installed?
No. Nothing is downloaded and nothing on the Mac is changed. It is a web page drawing a picture of an update screen.
It uses no Apple logos or artwork, only the general visual style, and it leaves nothing behind when the tab closes.
Why does the remaining time go up instead of down?
Because that is what makes it believable. Real installers revise their estimates upward constantly as they discover more work.
A fake that counts smoothly down to zero is obviously fake. This one wanders, which is the behaviour people actually recognise.
How do I get out of it?
Press Escape twice — once to leave fullscreen and once to dismiss. Command+Tab and Mission Control also work normally throughout.
The page has no way to capture system shortcuts, so nothing is ever actually locked.
Can I run it on a Windows machine?
Yes, any browser renders it. The Windows-styled version is more convincing on Windows hardware, so use that one on a PC.
Use the fake Windows update screen instead when the target is a PC.
Does this cost anything or need an account?
No. Every tool here is free, needs no sign-up, and runs in the browser with nothing to install and nothing stored.
There are no accounts, no paywalled sizes and no watermarks on downloads. See the full list of screen tools.
Will my screen stay awake while it runs?
Yes, with Keep awake switched on. It holds a browser wake lock so the display stays lit with no input until you leave.
Useful when a screensaver or clock is meant to run unattended. The lock is released as soon as you close the page.
Put this on your site
The embeddable version drops the page around it and runs the tool on its own.