Knowledge Base
White screen when starting LockDown Browser

If you start LockDown Browser but only see a white screen, it's typically caused by your computer or network blocking access to one or more of our servers.

Please verify LockDown Browser can access the following domains at start-up:

respondus2.com
respondus.com
static-public-downloads-cloud.respondus.com  

These domains may need to be added as "trusted sites" in security settings on the local computer and may need to be added to network firewalls or routers.
We also use Amazon Web Services (AWS), so it's important that your software and network permits access to their IP range.

The executable for LockDown Browser is: LockDownBrowser.exe

It's possible that you may need to add the below executable as a "trusted application" in your firewall/proxy settings:

server-profiles-respondus-com.s3-external-1.amazonaws.com

As of LockDown Browser 2.0.0.06, if your computer or network is blocking access to the necessary servers, you will see this message:

 

fetch