To ensure Respondus Lock Down Browser OEM functions with minimal interruptions during an online test, please consider the following best practices.

• Temporarily disable the computer's spyware or anti-virus software.
• Spyware detection and anti-virus software may interfere with Respondus Lockdown Browser. Examples include AVG, Spyware Doctor, Ad-Aware, Spybot, Norton, McAfee, etc.
• Temporarily disable the computer's firewall.
• If the computer's firewall needs to remain enabled, make sure that the Lockdown Browser application is allowed full access to the Internet. This means you may need to enter the Lockdown Browser executable file as an exception.
• Close all open programs and applications.
  
• If using a PC, you can do this through the Task Manager. If using a Mac, you can do this through the Activity Monitor.
• Make sure the Internet connection is stable. 
• Respondus Lockdown Browser requires a constant Internet connection. If there's any break in connectivity, a blank white screen may appear.
• Make sure JavaScript and cookies are enabled.
• Make sure your browser's pop-up blocker is turned off.
• Make sure you have an updated version of Java installed and that Java is enabled.

If you experience freezing while Lockdown Browser is running, you may need to force shut down your computer by pressing and holding the power button. Once you restart the computer, launch Lockdown Browser again to continue from where you left off.