Don't turn off your PC. This will take a while.
Your PC may restart several times
Transport any PC back to the era of teal backgrounds, friendly typography, and endless “Don’t turn off your computer” warnings.
We cloned the genuine Windows 10 update UI—same spinner, same copy, same glacial progress bar.
The simulator features the familiar dark teal gradient with Segoe UI text that updates every few seconds. The progress percentage climbs realistically but never quite finishes. Additional lines such as “Working on updates 27%. Don’t turn off your PC. This will take a while.” rotate automatically to reinforce authenticity.
The signature dot circle animation runs at the same cadence as native Windows 10 screens.
Message queue cycles through update stages (“Installing features,” “Cleaning up”).
Configurable pace lets you freeze at 99% for maximum suspense.
Automatic cursor hide and black background make it indistinguishable from actual servicing screens.
Press F11. If you’re on Windows, the wallpaper disappears and the prank becomes indistinguishable from reality.
Lower the display a little; update screens often dim to conserve energy.
Leave a sticky note: “Started update at 2:37 PM, please don’t touch.” Instant credibility.
Percentages crawl slowly. People will keep glancing, hoping for 100%.
Before anyone reboots the machine, exit fullscreen and enjoy the collective sigh of relief.
Windows updates are universal shared trauma. People have lost hours to them, so they instinctively accept defeat when they see the screen. The friendly yet firm copy (“Sit back”) convinces even power users to wait.
Believe it or not, some listeners use white noise to fall asleep. Reduce the brightness, switch to grayscale, and set the audio to a gentle hiss. Instant retro sound machine for late-night coders.
Prep quips for the reveal so the prank ends on a collaborative laugh. “Great news, the updates installed a sense of humor,” or “Turns out the progress bar was measuring our patience.” Collect your audience’s best comebacks and add them to a shared doc for future mischief.
Build a laminated card with boxes to tick: Fullscreen? Brightness dropped? Sticky note planted? Excuse rehearsed? Running through the list feels like prepping a rocket launch and keeps the execution tight even when you’re nervous.
Line up Windows system chimes, USB disconnect bleeps, and the famous “device connected” tone on a nearby phone or Stream Deck. Trigger them right before revealing the prank to mimic a reboot finishing. Audio sells the illusion, especially in conference rooms.
Draft a fake company-wide announcement about “mandatory updates” and schedule it to send right after the reveal. Coworkers will connect the dots and appreciate the dedication to bit-building.
Track how long each audience waits before intervening, then chart the averages. You’ll discover fun data points (“Design team waits longest,” “Night shift restarts immediately”) that inform future pranks.
Partner with a friend who pretends to be on a speakerphone from “corporate IT.” They walk the room through absurd troubleshooting steps (“Please hum the Windows startup tune”). The dialogue keeps bystanders engaged even when the progress bar barely moves.
Create a fake wall calendar that charts legendary “update outages” for your group. Mark squares like “Jan 12 — Snack Bar PC stuck at 14%,” “Mar 3 — Conference Room rebooted mid-vow renewals,” and add stickers whenever a new prank unfolds. Reviewing the calendar before each deployment builds ritual, encourages story continuity, and guarantees you’ll never repeat the same cover story twice.
Stick a whiteboard next to the monitor and jot down “Findings” as spectators shout them out (“Dots sped up at 43%,” “IT hotline on lunch break”). Snap a photo before erasing; the board becomes an instant meme for company chat and a reference sheet for future pranks.
Fake downtime is hilarious when everyone’s workload can pause for a minute. Don’t run it during mission-critical operations, and always show targets how to escape.
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Follow these simple steps to pull off the perfect prank
Browse our collection of pranks and select the one that matches your target's interests. From fake updates to hacker simulators, pick what fits best!
Open the prank on your friend's computer, phone, or tablet. You can either hand them your device or get them to open it themselves for maximum surprise.
Let the prank do its work! The realistic effects and authentic look will make them believe what they're seeing. Capture their reaction for the memories!
Once they're sufficiently pranked, reveal that it's all fake! Press ESC or close the page to show them it was just a harmless joke. Laugh together!
Share the prank with your friends! Whether it's a video of their reaction, a screenshot, or just telling the story - these moments make the best memories.
Try different pranks! Each one offers a unique experience. Mix and match to keep things fresh and create endless entertainment.