I installed the offline version of CS50 IDE. It was working correctly. Now,

  1. I upgraded my system to Windows 10 and the offline version is no longer working. The browser is showing "This webpage is not available."

  2. To solve the issue, I uninstalled the Docker Toolbox and the virtualbox, then REINSTALLED those again.

  3. Then I opened up "Docker Quickstart Terminal" and pasted this command under the whale.(as guided in the page "https://cs50.readme.io/v2015/docs/offline") .

    • 'docker run -e "OFFLINE_IP=$(docker-machine ip default)" -e "OFFLINE_PORT=8080" --name cs50ide -d -p 5050:5050 -p 8080:8080 cs50/ide50-offline'


  • "Error response from daemon: Conflict. The name "cs50ide" is already in use by container 5e787b85b840. You have to remove (or rename) that container to be able to reuse that name."

How to solve this problem?


I`m guessing you just want to restart so at the docker cmd line type

docker start cs50ide

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basically this tells you that you have already run the docker run command before. no need to re-run this command. to start the IDE, execute:

docker start cs50ide

per step 7 in the docs https://cs50.readme.io/v2015/docs/offline. then visit http://OFFLINE_IP:5050, as instructed, where OFFLINE_IP is the IP you got from the Docker Quickstart Terminal, when first started.

you should be able to get OFFLINE_IP by executing the following command in the Docker Quickstart Terminal:

docker-machine ip
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My Windows 10 updated to the latest version yesterday and offline CS50 IDE stopped working. Virtualbox was refusing to open, I had to download latest docker toolbox, started working again: https://www.docker.com/products/docker-toolbox

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I found that it wouldn't work with Edge, but did with IE11.

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  • I found the same on my new Surface didn't work on edge but worked on IE. Not sure why the down votes. – Patricia Slavin Dec 9 '16 at 3:05

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