Please keep your computer on.
Your computer may restart a few times.
The minimalist black background, friendly typography, and endlessly rotating dots have become the universal symbol for “welp, guess I’m waiting.” Use that to your advantage.
Windows 11 swapped harsh blues for calming charcoal, but it didn’t make updates any faster.
This simulator mirrors the exact layout of the Windows 11 servicing screen: centered text, white Segoe UI letters, the “This will take a while” tone, and the hypnotic dotted loop. Users have seen it enough that they instinctively grab their phone and start doomscrolling. They’ll cancel meetings, pause downloads, and message you “BRB windows updating.”
The progress percentage ticks upward just believably enough—jumping from 3% to 12%, then 39%, then stalling in the 70s like real cumulative updates. Meanwhile, the text rotates between “Installing updates,” “Please keep your computer on,” and “Working on updates 73%.” All the canonical phrases that make PC owners groan are here.
The spinning dots use easing curves modeled after the actual Windows animation, so it looks native even on 4K displays.
The counter crawls, sprints, and pauses unpredictably—just like Windows Update’s real rollercoaster.
The line everyone fears: “Please keep your computer on.” It convinces even power users to wait politely.
The deep charcoal background blends seamlessly with Windows 11 dark mode desktops, making browser chrome invisible.
Follow these steps for believable chaos.
Press F11 to hide the browser frame. If you’re on Windows, the taskbar will fade into the same dark tone for extra realism.
Tilt it slightly upward so reflections make it harder to notice this is a web page.
Write “Updating to build 23H2, back in 20” on a sticky note. That human touch convinces coworkers it’s real.
When the victim arrives, shrug and say “Yeah, Windows decided to help itself.” Let them stare hopelessly.
After a minute or two, hit Esc and show the URL. Invite them to use it on their roommate later.
Teachers use it to segue into lessons about patch management, then reveal it’s fake to a chorus of groans.
Drop it on meeting room PCs to “buy time” while cables are set up.
Launch it on a friend’s desktop while they grab snacks. Listen for the distant shout.
Directors need transitional shots of “computer maintenance.” This screen is instantly recognizable on camera.
We match Microsoft’s messaging cadence (“This might take a while,” then “Your PC will restart several times”). The spinner accelerates every 7.5 seconds, the same interval captured during actual servicing. Even the font weight (350) matches Windows UI guidelines. If you want extra authenticity, dim RGB lighting and unplug accessories so the desk looks dormant.
For advanced users: open DevTools, change the build number text to something inside-jokey (“Installing KB5031354”), or translate the copy into another language to prank bilingual teammates. Because everything renders client-side, you can do this safely offline after the first load.
Pair the simulator with real floppy disks, an external USB drive, or a beige keyboard you found on eBay. Connect a USB speaker playing dial-up noises for immersive time travel. Little touches like these push the prank from “cute” to “museum-grade performance art.”
Once the laughter subsides, explain why FORMAT commands were dangerous, what FAT32 is, and how modern journaling file systems reduce risk. People walk away entertained and smarter, which is the best prank outcome imaginable.
Turn the fake update into a tabletop exercise by assigning each bystander a department while the spinner crawls. Act out how support, security, and finance would respond if patch night really hijacked an afternoon. The playful rehearsal builds empathy for the teams who live through maintenance windows weekly.
After you reveal the prank, circle back with quick questions: When have real updates saved you? What’s the funniest reboot excuse you have heard? How long would you wait before force-restarting? Collect the answers in a shared doc and you’ll have a treasure trove of quotes for future prank scripts.
Print mini cards labeled “What surprised me,” “Next time I’ll…,” and “Funniest quote.” Hand them out right after the reveal and let people scribble responses in under a minute. Shuffle the cards and read them aloud for a rapid-fire retrospective that doubles as improv comedy.
The goal is to poke fun at long updates, not to sabotage real work. Reveal promptly, share the link, and enjoy watching someone else use it tomorrow.
Create hilarious moments with friends and family. Pull off the ultimate prank and watch their reactions unfold in real-time.
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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.