Knowledgebase:
"Error sending exam start notification, unable to continue with exam."
Posted by Respondus Support

"Error sending exam start notification, unable to continue with exam."

This error will occur when the exam requires Respondus Monitor, but the computer and/or network is not able to communicate with our Monitor server. The following domain must be permitted on your computer and network: 

*.smc-service-cloud.respondus2.com

Other essential domains are:

Server profiles: server-profiles-respondus-com.s3-external-1.amazonaws.com
Update server: static-public-downloads-cloud.respondus.com
Installs/Downloads: *.respondus.com
Help Center: help-center-respondus-com.s3.amazonaws.com