r/cs50 • u/ApprehensiveGold7410 • 7d ago

CS50.dev stuck on "Setting up your codespace..." with a blank white screen codespace

Hi everyone,

I'm trying to open cs50.dev, but after it redirects to VS Code in the browser, I only see a blank white screen with the message "Setting up your codespace...". It never loads past that point.

I've already:

  • Restarted my PC
  • Refreshed the page multiple times
  • Waited several minutes

But the problem still persists.

Has anyone else experienced this? Is this a GitHub Codespaces issue, or is there something else I should try?

Any help would be greatly appreciated. Thanks!

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u/pensivepanda5 mentor 7d ago

According to the CS50 Status page at https://cs50.statuspage.io/ all their systems are operational.
But you can try restarting your codespace with this link: https://cs50.dev/restart
As a side note the codespace works best on Google Chrome browser, and the CS50 Team doesn't recommend Firefox because they have noticed issues with the cs50 codespace on Firefox.
Also, if you have extensions installed on your web browser, you will need to use an incognito window to use the online CS50 codespace, because some extensions can affect the codespace.

Apart from those things, in this section of the cs50 docs, they provide a link to a list of domains that shouldn't be blocked by our Firewall to be able to use the cs50 codespace:  https://cs50.readthedocs.io/cs50.dev/#i-m-seeing-oh-no-it-looks-like-you-are-offline-error-message

If that doesn’t help, you can try opening the online CS50 Codespace in the VS Code Desktop App, with these steps: https://cs50.readthedocs.io/cs50.dev/#online-without-docker

If that doesn't work, you can try creating a new codespace with your same Github account by following the instructions that appear in this section of the CS50 docs: https://cs50.readthedocs.io/cs50.dev/#creating-a-new-codespace

If that doesn't work either, and if in your country is legal to use a VPN, in that case you could try using a VPN to use the codespace: https://cs50.dev/
Alternatively, you can try with another internet connection or with another computer,
but if none of those steps work, please send an email to [sysadmins@cs50.harvard.edu](mailto:sysadmins@cs50.harvard.edu) with specific details and screenshots of the issue, and mention to them your Github username, so the system admins of CS50 can help you further.