# Troubleshooting

When MediaRecorder control with The Observer XT does not function properly, check the following;

- On the computer with MediaRecorder, check that N-Linx Agent is running. See step 1 in [Connect N-Linx Agent to N-Linx Server](https://bookstack.noldus.com/link/446#bkmrk-connect-n-linx-agent). If there is no N-Linx agent icon in the system tray, the program is not running. Then double-click the file **NLinxAgent.exe** in the folder C:\\Program Files\\Noldus\\N-Linx Agent 1.
- On the computer with MediaRecorder, check that the status of the N-Linx Agent is **Connected**. If not, follow steps 2 and 3 in [Connect N-Linx Agent to N-Linx Server](https://bookstack.noldus.com/link/446#bkmrk-connect-n-linx-agent).
- In MediaRecorder, check that the checkbox **Allow communication with N-Linx Server** is selected (see step 2 in [Create MediaRecorder Settings](https://bookstack.noldus.com/link/447#bkmrk-page-title)).
- In The Observer XT, check that Use N-Linx server to connect with other applications is selected (see step 2 in [Create The Observer XT settings](https://bookstack.noldus.com/Create_The_Observer_XT_settings.htm#XREF_27443_The_Observer_XT)) and that the Status in the window is Connected (see step 5 in [Create The Observer XT settings](https://bookstack.noldus.com/link/448#bkmrk-page-title)).
- In The Observer XT, check that MediaRecorder is selected (see step 9 in [Create The Observer XT settings](https://bookstack.noldus.com/link/448#bkmrk-page-title)).
- On all computers with MediaRecorder, The Observer XT, and N-Linx Server, check that an exception is made in Windows Firewall for all inbound and outbound traffic through port 5672 (see [Create exceptions for N-Linx port in Windows Firewall](https://bookstack.noldus.com/Create_exceptions_for_N-Linx_port_in_Windows_Firewall.htm#XREF_42470_Exceptions_for_N)).
- Check that N-Linx Server is running. To do so, press **Ctrl + Shift + Esc** and open the **Services** tab. Locate the line RabbitMQ and check that the **Status** is Running. If not, right-click the line and select **Start**.

[![image.png](https://bookstack.noldus.com/uploads/images/gallery/2023-11/scaled-1680-/jcvfXY6RiFXRAbL1-image.png)](https://bookstack.noldus.com/uploads/images/gallery/2023-11/jcvfXY6RiFXRAbL1-image.png)