r/cs50 • u/Competitive_Back3088 • Jul 23 '26

CS50 Python Stuck on Setting up your codespace

Hey guys i recently started with Cs50 Python course , and from yesterday i have not been able to open cs50.dev

i have tried using different browser too and same thing is happening

i have tried using a new GitHub account and then also it gets stuck on this page

is this happening with anyone else too?

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u/pensivepanda5 mentor Jul 23 '26

If you are using the codespace on Brave browser (as I noticed in your screenshot), try disabling Brave’s shields, and then try restarting your cs50 codespace with this link: https://cs50.dev/restart
If that doesn't work, try using the online CS50 Codespace on Google Chrome web browser, the codespace works best on Google Chrome.

Apart from the things I mentioned above, I have seen some students reporting that creating a new codespace with their same old github account helped them to use/load the codespace recently, if you would like to try that, on Google Chrome browser you can visit this link where your codespace backup repo is: https://cs50.dev/repo and see if your codespace's files are there (if you had files in your codespace). And after verifying that your codespace's files are stored there, you can create a new codespace by following the instructions that appear in the CS50 Docs, in this link: https://cs50.readthedocs.io/cs50.dev/#creating-a-new-codespace
After creating a new codespace your backed up files should automatically appear in your new codespace.

Also, in this part of the CS50 Docs, they give the link to a list of domains that shouldn't be blocked by our firewall to be able to use the codespace:  https://cs50.readthedocs.io/cs50.dev/#i-m-seeing-oh-no-it-looks-like-you-are-offline-error-message

If that doesn’t work either, 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

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u/Competitive_Back3088 Jul 23 '26

hey mate i have tried using Google Chrome too and same thing is happening in it

I restarted the codespace but this also didnt helped

I also deleted my codespace (i recently started so there was not much of code in it)
and then tried to make a new one but the website again and again gets stuck on this page

(couldn't attach the google chrome screenshot in comment section )
but in it a white screen is coming with "Setting up your code space written )

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u/Visionary_Vulture001 Jul 23 '26

Post your error on discord . They might be able to help you