AssignHQ on Windows.
The lockdown app runs on Windows 10 and 11. It gives the same locked exam as the Mac app. On Windows the app does the operating system’s job itself: Alt-Tab, the Windows key and Print Screen are intercepted before Windows acts on them — something no browser-based exam tool can do. Here is exactly how setup goes and what Windows will say along the way.
Setting it up takes three steps
Five minutes on most machines. Windows shows two prompts on the way; both are expected, and here is what each one looks like.
The download page detects Windows and hands you the right file. Its name ends in x64.exe. Open it when it finishes.
First SmartScreen, because the beta is not yet signed: click More info, then Run anyway. Then the usual admin prompt: click Yes. On a school-managed laptop that click may belong to your IT team.
Students enter their class code or sign in, exactly as in a browser. When an assessment is set to desktop lockdown, it opens locked inside the app and unlocks when they submit.
The SmartScreen prompt, so nobody is surprised
During the beta the installer is not yet signed, so Windows shows its standard warning for new software. The steps to the right get past it. Only do this for an installer you downloaded from this site. Signed builds are coming, and this prompt goes away when they land.
What lockdown does on Windows
The same exam as on a Mac, enforced with what Windows lets an app do, which in some places is more than a Mac allows.
Alt-Tab, the Windows key, and Print Screen are caught before Windows acts on them, and each attempt is logged for the teacher. A browser cannot do this; the app can.
Recording tools, screen shares and remote viewers get a black rectangle where the exam is. If the assessment itself records the screen for review, that recording takes priority and capture protection stands down.
When the assessment refuses extra displays, every screen beyond the main one is covered for the length of the exam, and a monitor plugged in mid-exam is flagged.
Before the exam starts, the app asks the student to close what is open, and it can see apps hiding in the system tray. Task Manager is locked while the exam runs and unlocked after.
What Windows keeps for itself
Ctrl-Alt-Delete belongs to the operating system on every machine, and no exam tool can take it, ours included. We log it rather than claim otherwise.
Which machines are out
The app is built for 64-bit Intel and AMD processors. Windows devices on ARM chips, such as some newer Surface models, are not supported yet. Those students can use browser-monitored mode or a Mac.
What happens between exams
Nothing. Lockdown engages when a student opens a locked assessment and lifts the moment they submit. Task Manager and every key the app intercepts go straight back to normal when the exam ends.
Rolling it out to a lab or a cart
The installer is a standard NSIS package. It installs for the whole machine under Program Files, which is deliberate: a student profile cannot swap in a modified copy. It runs silently with the usual switch:
During the beta the binaries are unsigned, so allowlist by hash or path if your policy needs it. Signed builds are planned before wide release, and updates after that verify the publisher before installing.
Write to us and we answer in writing. The security page covers lockdown, data handling and what we never collect.