The University of Iowa

Respondus Lockdown Browser


Information and detailed instructions for students on how to install the LockDown Browser on their personal computers can be found here.

Students can download the LockDown Browser here.

The Respondus LockDown Browser can be installed on personally owned computers and is currently installed on all campus ITC computers.

System Requirements:

The Respondus LockDown Browser can be installed on computers with the Windows operating system, Macs with OS 10.15 to 10.12, OS X 10.11, or OSX 10.10, and iPads.

The LockDown Browser is now supported on Chromebooks. More detailed information can be found here.

Status Error in macOS devices

If you get an error that says CERT_STATUS_AUTHORITY_INVALID on your macOS device, you need to upgrade your operating system.

Visit for steps for upgrading to macOS 10.12. 


For general information on updating Windows, visit 

For general information on updating Mac, visit


Licensing Information

  • Available for use by Students, Faculty and Staff of the University.


  • Enable in ICON through the navigation tab in your course settings menu.


Return to Respondus Home

Support for Respondus Lockdown Browser