Respondus Lockdown Browser not working is one of the most-searched troubleshooting queries before a proctored exam. This complete 2026 guide covers every Respondus error, crash, and compatibility issue — and how to fix them fast.
Lockdown Browser Won’t Install
Download fresh from your school’s LMS (Canvas/Blackboard). Run installer as Administrator on Windows. On Mac, go to System Settings → Privacy & Security → click “Open Anyway” when blocked by Gatekeeper.
Lockdown Browser Won’t Open / Crashes on Launch
Uninstall completely and reinstall. Disable antivirus temporarily during install. On Windows, right-click and Run as Administrator. Update your OS — Lockdown Browser requires Windows 10/11 (64-bit) or macOS 12+.
Lockdown Browser Says “Secondary Monitor Detected”
Disconnect all secondary monitors before launching. Even a monitor connected but turned off may trigger this. Unplug the cable entirely, then relaunch Lockdown Browser.
Respondus Monitor Camera Not Working
Windows: Settings → Privacy & Security → Camera → toggle Lockdown Browser ON. Mac: System Settings → Privacy & Security → Camera → toggle on. Close all other apps using the camera (Zoom, Teams, FaceTime).
“Your Browser Is Out of Date” Error
Uninstall Lockdown Browser and download the latest version from your institution’s Respondus download page. Do NOT download from Respondus.com directly — use your school’s specific link found in Canvas or Blackboard.
Lockdown Browser Won’t Load the Exam
Check internet connection. Make sure you’re logged into Canvas/Blackboard first in a regular browser, then open Lockdown Browser and navigate to the exam. Clear the Lockdown Browser cache from its settings menu.
Respondus Support
Respondus student support: support.respondus.com | Your school’s IT helpdesk can also assist with Lockdown Browser issues.
Why does Lockdown Browser keep crashing?
Lockdown Browser crashes most often due to: outdated OS, antivirus conflicts, corrupted installation, or insufficient RAM. Uninstall, update your OS, disable antivirus, and reinstall from your school’s LMS download link.
Is Lockdown Browser compatible with Chromebook?
Respondus offers a Chromebook version for some institutions. Check with your school — not all schools have it enabled. Standard Lockdown Browser requires Windows 10/11 or macOS 12+.
Technical issues resolved but worried about passing your exam? Call (310) 990-6314 — expert Lockdown Browser exam assistance available 24/7.
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