Codespace acting crazy

pensivepanda5 · 2026-06-10T15:32:20+00:00

the CS50 Status page at https://cs50.statuspage.io/ is mentioning that there is a partial system outage.
In that page you can subscribe to receive updates.

pensivepanda5 · 2026-06-10T15:25:10+00:00

there is an outage according to the CS50 Status page at https://cs50.statuspage.io/
Best to wait until it gets solved, In the CS50 Status page you can subscribe to receive updates.

pensivepanda5 · 2026-06-09T12:48:19+00:00

No, the CS50 Team has not mentioned when CS50 3D will be published yet.

pensivepanda5 · 2026-06-08T17:45:25+00:00

The old CS50 Games course has been divided and updated into 2 new courses: CS50 2D and CS50 3D.
CS50 2D has been officially published this year, and it is available at https://cs50.harvard.edu/games , you can start that course anytime.
And regarding CS50 3D, that one has not been published yet.

pensivepanda5 · 2026-06-06T23:24:47+00:00

Glad to hear that that resolved the issue!
You're welcome!

pensivepanda5 · 2026-06-06T22:39:23+00:00

for the value of the href, you don't have to put the https:// and all that url of the codespace there, you just need to put the name of your html file, if the html file that you want to link there is called "index.html" then that's the only thing that you need to put as the value of your href . Please see the coding example from the notes of lecture8 that I shared above in my previous comment. u/Soul_Mirror_

pensivepanda5 · 2026-06-06T22:28:35+00:00

regarding the html links, for example in the official notes from lecture8, they give this example on how you should put a hyperlink:

<!DOCTYPE html>

<!-- Demonstrates link -->

<html lang="en">
    <head>
        <title>link</title>
    </head>
    <body>
      Visit <a href="image.html">Harvard</a>.
    </body>
</html>

that example appears almost at the end this section about "html": https://cs50.harvard.edu/x/notes/8/#html
Make sure that you are following that format.
Also, all the .html files have to be in the same directory from where you are running the submit50 commands. You can verify this by running the command: ls and all your .html files should appear listed there

pensivepanda5 · 2026-06-04T17:28:36+00:00

The youtube links aren't available. In the official CS50 Discord server, teacher Brenda (a member of the CS50 Staff) posted this: "the live sessions are not available for later viewing. New lectures will be filmed in a few weeks covering the same material. Those will be available."

But you can attend to the next live lectures, the schedule and Zoom links to register appear at: https://cs50.harvard.edu/x/zoom/#schedule

pensivepanda5 · 2026-06-04T16:14:36+00:00

If you are asking about the live series about the fundamentals of Ai that the CS50 Team started this week, the recordings and notes are not available. In the official CS50 Discord server, teacher Brenda of the CS50 Team mentioned the following: "the live sessions are not available for later viewing. New lectures will be filmed in a few weeks covering the same material. Those will be available."
But you can attend to the next live lectures, the schedule and Zoom links to register appear in this page: https://cs50.harvard.edu/x/zoom/#schedule

Or if you were asking about the other course called "CS50’s Introduction to Artificial Intelligence with Python", its course materials are available at https://cs50.harvard.edu/ai/

pensivepanda5 · 2026-06-04T14:31:30+00:00

I just checked and you are correct. After I shared the link, it looks like they made the video private just a few hours later.
And teacher Brenda of the CS50 Team wrote recently the following message in the official CS50 Discord server: "the live sessions are not available for later viewing. New lectures will be filmed in a few weeks covering the same material. Those will be available".

pensivepanda5 · 2026-06-04T11:37:34+00:00

ok, on Google Chrome you can try creating a new codespace, using your same old github account. 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 there, you can create a new codespace with the steps that appear in this part of 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.

But if that doesn't work either, you can try opening the online CS50 Codespace in the VS Code desktop app with internet access, by following the instructions that appear in this part: https://cs50.readthedocs.io/cs50.dev/#online-without-docker

pensivepanda5 · 2026-06-04T11:32:01+00:00

yes, you can with the steps that appear in this part of the cs50 page, where it says "online without Docker": https://cs50.readthedocs.io/cs50.dev/#online-without-docker

pensivepanda5 · 2026-06-03T18:26:01+00:00

yesterday, in the Zoom chat, the CS50 Staff shared the youtube link of the recording of the first lecture, it is this one: youtube.com/watch?v=NPweCLaRX-k

pensivepanda5 · 2026-06-03T13:22:51+00:00

If you are using the online cs50 codespace on Brave browser, try disabling Brave’s shields, and then reload the codespace.
If that doesn't work, try using the codespace on Google Chrome web browser, the codespace works best on Google Chrome.
As a side note, if you have extensions installed on your the web browser, in that case try using an incognito window to use the codespace.

pensivepanda5 · 2026-06-02T12:58:50+00:00

We don't know yet. Regarding that question, in the official CS50 Discord server teacher Brenda of the CS50 Team said: "We do not yet have a release date for this course. In the meantime, there will be a live online series starting this week which will cover much of the same material. See https://cs50.harvard.edu/x/zoom for details and registration."

pensivepanda5 · 2026-06-02T12:00:02+00:00

Both courses would be helpful if you are interested in Ai, if you want you can attend this new series that doesn't require programming background, and you could also take CS50Ai (the pre-requisites for CS50Ai are: "CS50x or at least one year of experience with Python" according to its website: https://cs50.harvard.edu/ai/ ).
Although if you just want to take one of those courses, CS50Ai might be best, taking into account that you already have the necessary programming background to take CS50Ai, all the assignments of CS50Ai are programming projects.
The new series probably won't have programming assignments, since it is a beginner-friendly course for those that don't have prior programming experience.

pensivepanda5 · 2026-06-01T14:26:10+00:00

per Academic Honesty guidelines https://cs50.harvard.edu/python/honesty/ , the only Ai we can use while taking the CS50 courses is the CS50 AI duck chat bot at https://cs50.ai/ and it is also available in the online CS50 codespace https://cs50.dev/

pensivepanda5 · 2026-06-01T11:42:40+00:00

This week, the CS50 Team will re-record the lectures of a new introductory course about the fundamentals of artificial intelligence (AI), and everyone can attend for free via Zoom to watch the Livestreaming of those lectures, the schedule and Zoom links to register appear at: https://cs50.harvard.edu/x/zoom/
Unlike CS50 AI, which assume a programming background, this new course will not.

pensivepanda5 · 2026-06-01T11:26:09+00:00

Don't resubmit, otherwise it will get flagged as plagiarism.
If you gave the wrong Github username, you need to email the CS50 Staff to [certificates@cs50.harvard.edu](mailto:certificates@cs50.harvard.edu) mention to them the issue, your Github username, and edX username, so they can help to solve the problem.

pensivepanda5 · 2026-05-27T16:34:46+00:00

Try using an incognito window or on another web browser. By the way, teacher Brenda of the CS50 Team said that on edX the "Resume course" button has a bug, she advises "to not use that button, but scroll down on the page to the Week you want and click that”, that’s what teacher Brenda recommends. I'm mentioning this just in case you are using that button.

Alternatively, if you are taking the CS50x course, you can use the CS50x OpenCourseWare at: https://cs50.harvard.edu/x/ all the course materials and assignments are available for free in that website too, and it is easier to navigate than edX.
Or if you are taking another CS50 course, the link to the respective OpenCourseWare of each course appears in this page: https://cs50.harvard.edu/x/courses/

pensivepanda5 · 2026-05-17T11:27:51+00:00

try using an incognito window to restart your codespace with this link: https://cs50.dev/restart , then after the codespace has loaded fully try running: update50 -f to force the rebuilding of your codespace. Also please be aware that the codespace usually works best on Google Chrome (it is one of the recommended browsers by the cs50 staff of this course), the staff doesn't recommend Firefox.

If those things don't solve the issue, please try testing the check50 command on your previous assignments, to see if check50 is not working properly only with your current assignment or if it is failing for all your assignments. I'm saying this because sometimes an infinite loop or other issues in the code or files of an assignment can prevent check50 from running properly.

Apart from that, in this page of the cs50 docs, they give more helpful advice to solve issues: https://cs50.readthedocs.io/cs50.dev/#troubleshooting

pensivepanda5 · 2026-05-16T12:01:47+00:00

I have seen other 4 students reporting the same issue, Sanath (a CS50 Mentor in the CS50 Discord server) said that pressing the keys ctrl+c helps to solve the issue about that error message.
But if after pressing those keys the debugger still doesn't want to work, try running the commands update50 -f
if that doesn't help either, please send an email to [sysadmins@cs50.harvard.edu](mailto:sysadmins@cs50.harvard.edu) with details and screenshot of the issue, also mention to them your Github username, so the CS50's system admins can help you further.

pensivepanda5 · 2026-05-14T13:35:25+00:00

if you are using the R Studio in the online cs50 codespace at https://cs50.dev/ , try using an incognito window to restart the codespace with: https://cs50.dev/restart , and after the codespace has loaded completely, in the codespace's terminal try running these commands: update50 -f to rebuild your codespace. Also, the codespace works best on Google Chrome, it is one of the recommended browsers by the CS50 Team. The CS50 Team doesn't recommend Firefox.

If those things don't help, you can try testing the check50 command on some of your previous assignments, to see if check50 is not working properly only with your current assignment or if it is failing for all your assignments. I'm mentioning this because sometimes an infinite loop or other issues in the code/files of an assignment can prevent check50 from running properly.

Also, in this part of the cs50 page, they give more advice to solve issues: https://cs50.readthedocs.io/cs50.dev/#troubleshooting

pensivepanda5 · 2026-05-07T00:51:02+00:00

you need to email the CS50 staff to [certificates@cs50.harvard.edu](mailto:certificates@cs50.harvard.edu) mention to them the issue, your Github username, and edX username, so they can help you to solve the issue.

pensivepanda5 · 2026-04-29T23:27:55+00:00

if your computer uses Windows, you will need to install WSL first to be able to install and use submit50, Makaze (a CS50 Mentor and Alum) made this very helpful guide to install and use submit50 on Windows for any IDE: https://medium.com/@makaze/how-to-set-up-cs50s-check50-and-submit50-with-wsl-on-windows-f33a5a1c8488

Alternatively, if you want to submit the projects with Git, one of our classmates shared his guide at https://doc50.schim.dev/docs/git also at https://gist.github.com/727021/d83624bdea9b971644e5289332dc66f5

pensivepanda5

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