Problem
When using Respondus Lockdown Browser you receive an error: "SSInvitationAgent Error".
Environment
Respondus LockDown Browser
macOS
Resolution
To fix the "SSInvitationAgent Error" for Respondus LockDown Browser on a Mac, you need to terminate background messaging processes that conflict with the app.
1. Close Applications
- Quit Respondus LockDown Browser.
- Close Apple Messages (iMessage) and any other active messaging or screen-sharing apps on your Mac.
2. Open Activity Monitor:
- Go to Finder > Applications > Utilities > Activity Monitor.
3. Stop Conflicting Processes:
- Click on the CPU tab.
- Click the Process Name column header to sort the list alphabetically.
- Locate the SSInvitationAgent and SSMenuAgent processes.
- Highlight SSInvitationAgent, click the Stop (X) button in the upper toolbar, and select Force Quit (repeat if it prompts you more than once).
- Repeat the exact same stop/force quit action for SSMenuAgent.
4. Restart Respondus:
- Close Activity Monitor.
- Re-launch Respondus LockDown Browser.
Cause
Faulty processes need to be stopped so the can be reinitialized and restarted.