--- title: "Unable to launch lockdown browser" slug: "unable-to-launch-lockdown-browser" tags: ["Student", "LockDown", "Exam", "Technical Issue", "Problem"] updated: 2025-02-25T07:21:39Z published: 2025-02-25T07:21:39Z canonical: "it.ajman.ac.ae/unable-to-launch-lockdown-browser" --- > ## Documentation Index > Fetch the complete documentation index at: https://it.ajman.ac.ae/llms.txt > Use this file to discover all available pages before exploring further. # Unable to launch lockdown browser This issue is caused by: **Old version of LockDown Browser** To solve this issue, please update the LockDown Browser by following the below steps: ## Windows Users Start Respondus LockDown Browser, select the “**i**” button from the toolbar, and then click on **Check for Newer Version**. The version will be displayed and you will be able to download a newer version if one is available. Also, make sure to disable the firewall by clicking on the **Windows key**, search for **Firewall & network protection**, click on any active firewalls and **turn it off**. Additionally, please disable the anti-virus by locating its icon in the notification area on the taskbar, right-click the icon and choose the option to disable or exit the program. ## Mac Users Start Respondus LockDown Browser, click on **About in** the toolbar, and then click on **Check for Update**. The version will be displayed and you will be able to download a newer version if one is available.