New from Stackdrop

DeskCheck by Stackdrop

Step away from your desk with confidence. One click covers every monitor in true black — cursor hidden, distractions gone. Not Windows lock: no password, just unlock and you're back.

Download DeskCheck (Free) All Tools

Antivirus / SmartScreen notice: DeskCheck is a new, unsigned portable .exe. Windows Defender, SmartScreen, or your antivirus may warn you — this is a common false positive for small tools. If prompted, click More info → Run anyway (SmartScreen) or Allow / Restore in your antivirus. DeskCheck is built by Stackdrop, runs entirely on your PC, and never phones home.

What your screen looks like while DeskCheck is active

What is DeskCheck?

DeskCheck is a lightweight Windows utility that instantly blankets all your monitors with a fullscreen, true-black overlay. No dim gray wash — pure black. The mouse cursor disappears completely. Whatever was on screen is hidden from anyone walking by.

Run the portable DeskCheck.exe, and your workspace goes dark until you decide to come back. No installation, no account, no nonsense.

Not Windows lock screen. DeskCheck does not trigger Win+L or the sign-in screen. Unlocking never asks for your Windows password — dismiss the overlay and you’re right back on your desktop.

True Black Overlay

Not monitor-off gray — a crisp, fullscreen black layer painted across every display.

All Monitors

Spans your entire virtual desktop — dual monitors, ultrawides, and mixed setups included.

Hidden Cursor

The system pointer is fully hidden while locked. Nothing peeks through.

Instant & Portable

Single .exe file. Double-click to lock. No installer, no registry changes.

Private & Local

Runs entirely on your machine. No data collection, no cloud, no tracking.

No Windows Lock Screen

Not Win+L. No password prompt. Unlock returns you straight to your desktop — not the Windows sign-in screen.

How to unlock

DeskCheck is designed to be easy to dismiss when you return — but opaque to casual observers. This is not the Windows lock screen: no password, no PIN, no sign-in page. Any one of these will close DeskCheck and restore your desktop:

⌨️

Any key Press any keyboard key

🖱️

Any click Left, right, or middle mouse button

↔️

Mouse movement Move the mouse continuously for 3 seconds

How to use

Download — Grab DeskCheck.exe using the button above. Save it anywhere — Desktop, Downloads, or a USB stick.
Allow it if warned — Windows SmartScreen or your antivirus may flag the file because it is new and unsigned. Click More info → Run anyway on SmartScreen, or allow/restore the file in your antivirus. This is a false positive — DeskCheck is safe and local-only.
Run — Double-click the file. Every monitor goes black immediately. The cursor vanishes.
Step away — Your screen content is hidden. Grab coffee, take a call, walk the dog.
Return & unlock — Press any key, click, or wiggle the mouse for 3 seconds. DeskCheck closes and your desktop is back instantly — no Windows password required.

Perfect for

Open offices & shared spaces — Hide sensitive documents when you leave your desk.
Home offices — Quick privacy when family walks into the room.
Focus breaks — A hard visual stop between work sessions.
Presentations & demos — Black out screens before sharing or switching inputs.

FAQ

Is this the same as Windows lock (Win+L)? No. DeskCheck is a black privacy overlay only. It does not lock Windows, log you out, or show the sign-in screen. When you unlock DeskCheck, you return directly to your open apps — no password needed.

Does DeskCheck turn off my monitors? No. It draws a true-black fullscreen window on top of everything. Your displays stay on — they just show black.

Will I get locked out forever? No. Press any key, click the mouse, or move it continuously for 3 seconds to unlock. DeskCheck stays on until you do one of those.

Does it work with multiple monitors? Yes. DeskCheck covers your entire virtual desktop — all connected displays at once.

Why does my antivirus or Windows warn me about DeskCheck? DeskCheck is a small, unsigned portable .exe from a newer tool. Antivirus software and Windows SmartScreen often flag files like this until they build reputation — even when the file is completely safe. If you see a warning, use More info → Run anyway on SmartScreen, or allow/restore the file in your antivirus. DeskCheck does not install anything, does not connect to the internet, and does not collect data.

Is it safe? Does it send data anywhere? DeskCheck runs 100% locally. No internet connection required, no telemetry, no ads.

What versions of Windows are supported? Windows 10 and Windows 11 (64-bit).