# Exam won't load notebook, terminal, workspace or simulation window

**URL:** <https://get-help.theconstruct.ai/t/exam-wont-load-notebook-terminal-workspace-or-simulation-window/3222>\
**Category:** ROS Beginners Exam\
**Created:** [April 22, 2020, 11:34am UTC](https://get-help.theconstruct.ai/t/exam-wont-load-notebook-terminal-workspace-or-simulation-window/3222 "2020-04-22T11:34:25Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![bayodesegun](https://get-help.theconstruct.ai/user_avatar/get-help.theconstruct.ai/bayodesegun/32/10684_2.png) [@bayodesegun](https://get-help.theconstruct.ai/u/bayodesegun)\
**Post date:** [April 22, 2020, 4:28pm UTC](https://get-help.theconstruct.ai/t/exam-wont-load-notebook-terminal-workspace-or-simulation-window/3222/4 "2020-04-22T16:28:15Z")

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@malloyj  
Sorry to hear that. Can you have a look at this post for some hints? It could be that websocket connections are being blocked.

> [@Unable to connect to notebook, terminal, or simulation](https://get-help.robotigniteacademy.com/t/unable-to-connect-to-notebook-terminal-or-simulation/1165/5):
>
> Hi @elizabeth.wills, the services on both platforms run in different non-default ports, but we have nginx that proxies all services to a common https (port 443) port. Given that all firewalls allow ports 443 and 80, then I think your firewall is blocking WebSocket Connections. We use WebSockets extensively. Could you check that with your IT team? I think they are allowing http:// and https:// protocols, but now allowing ws:// or wss://, which are used for WebSocket connections.

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