GitHub Codespaces is not available for all repositories. If the options for creating a codespace are not displayed, GitHub Codespaces may not be available for that repository. For more information, see "Creating a codespace for a repository."
Provided you have remaining monthly included usage of GitHub Codespaces on your personal account, or you have set up a payment method and a spending limit, you will be able to create codespaces for public repositories. However, you can only create a codespace for a private repository if you can push changes to the repository, or you can fork the repository.
If you create a codespace and it does not open:
- Try reloading the page in case there was a caching or reporting problem.
- Go to your GitHub Codespaces page: https://github.com/codespaces and check whether the new codespace is listed there. The process may have successfully created the codespace but failed to report back to your browser. If the new codespace is listed, you can open it directly from that page.
- Retry creating the codespace for the repository to rule out a transient communication failure.
If you still cannot create a codespace for a repository where GitHub Codespaces is available, you may need to contact support. For more information, see "Working with support."
If the creation of a codespace fails, it's likely to be due to a temporary infrastructure issue in the cloud - for example, a problem provisioning a virtual machine for the codespace. A less common reason for failure is if it takes longer than an hour to build the container. In this case, the build is canceled and codespace creation will fail.
Note: A codespace that was not successfully created is never going to be usable and should be deleted. For more information, see "Deleting a codespace."
If you create a codespace and the creation fails:
Check GitHub's Status page for any active incidents.
Go to your GitHub Codespaces page, delete the codespace, and create a new codespace.
If the container is building, look at the logs that are streaming and make sure the build is not stuck. A container build that takes longer than one hour will be canceled, resulting in a failed creation.
One common scenario where this could happen is if you have a script running that is prompting for user input and waiting for an answer. If this is the case, remove the interactive prompt so that the build can complete non-interactively.
Note: To view the logs during a build:
- In the browser, click View logs.
- In the VS Code desktop application, click Building codespace in the "Setting up remote connection" that's displayed.
If you have a container that takes a long time to build, consider using prebuilds to speed up codespace creations. For more information, see "Configuring prebuilds."
A codespace can only be deleted by:
- The person who created the codespace.
- An organization owner for an organization-owned codespace.
- Automatic deletion at the end of a retention period.
When you create a codespace, it has a finite amount of storage and over time it may be necessary for you to free up space. Try running any of the following commands in the GitHub Codespaces terminal to free up storage space.
- Remove packages that are no longer used by using
sudo apt autoremove.
- Clean the apt cache by using
sudo apt clean.
- See the top 10 largest files in the codespace with
sudo find / -printf '%s %p\n'| sort -nr | head -10.
- Delete unneeded files, such as build artifacts and logs.
Some more destructive options:
- Remove unused Docker images, networks, and containers by using
docker system prune(append
-aif you want to remove all images, and
--volumesif you want to remove all volumes).
- Remove untracked files from working tree:
git clean -i.
If changes to your dev container configuration cause a container error, your codespace will run in recovery mode, and you will see an error message.
This codespace is currently running in recovery mode due to a container error.
Review the creation logs and update the dev container configuration as needed. For more information, see "GitHub Codespaces logs."
You can then try restarting the codespace, or rebuilding the container. For more information on rebuilding the container, see "Introduction to dev containers."