CodeSandbox service status
Check whether the provider lists a problem with the feature you use. Look at the update time and any affected regions.
Live Domain Check
Is CodeSandbox Down? Check codesandbox.io Status and Outages
Run a live reachability check for codesandbox.io. Compare the regional responses with the problem you see in CodeSandbox.
Find CodeSandbox help and reporting links, specific checks, and step-by-step guidance below the live result.
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Checking reachability from multiple regions.
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Regional checks
Is CodeSandbox working for you?
Share a quick update and see what other visitors are experiencing.
What’s happening? Choose one to send your report.
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Most reported problems
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Visitor reports are separate from our automated checks and don’t confirm an outage. How reports work · Privacy
Understanding CodeSandbox connection and service problems
The CodeSandbox dashboard, development environment and application running inside it are separate layers.
The checker above requests codesandbox.io from eight configured locations and shows the responses and measurement times. Compare those observations with the actual CodeSandbox action that failed. A homepage response alone cannot verify an account, app workflow or transaction.
Looking for another service? Browse developer service checks.
CodeSandbox status information and official help
CodeSandbox help and reporting
Distinguish workspace startup from the application running inside it.
Open codesandbox.io
Open the website in your browser and compare it with the result above.
Where to report problems with CodeSandbox
Open CodeSandbox help / reporting. Use the provider's customer-service or account-help route for the affected product. Sign-in may be required for private account questions.
Details to include in your report
Sandbox/project, environment type, failed command, log excerpt and timestamp with secrets removed.
Attach the checker’s downloaded JSON if it helps show the hostname, regional responses and original timestamps. Describe what happened in your browser or app as well. A report sent to WebsiteDown.org is not automatically forwarded to CodeSandbox.
What to check when CodeSandbox is not working
These are troubleshooting comparisons, not claims that CodeSandbox is currently experiencing a particular incident.
Start with the action that failed
Identify whether the workspace cannot start or the app starts and fails on one command.
Narrow down the affected service
Compare the environment/build log with a minimal project before restarting repeatedly.
Read the actual checker response
A 403 Forbidden or 429 Too Many Requests means the host answered but refused or limited that request. A timeout gives no HTTP response. Keep those outcomes separate and check the available-region count before treating the result as broad evidence.
How to check if CodeSandbox is down
- Save the error. Note what you were doing and when it failed. Save unfinished work before refreshing.
- Run the codesandbox.io check. Look at the regional results and when they were checked. Checking again may return a cached result.
- Check for a service notice. Open CodeSandbox status and check whether the named service and incident time fit your error.
- Try another browser or network. Use the specific checks above to narrow down the problem. If it continues, send the error and time through the official help link.
If CodeSandbox Is Not Working Only For You, Start Here
Use these local troubleshooting steps after the down-check workflow when CodeSandbox seems broken only for you. This section focuses on app, browser, account, and network fixes.
1. Compare browser sessions
Open codesandbox.io in your current browser, then test in a private window or second browser. If only one session fails, compare its account, cookie and extension context before assuming the entire service is unavailable.
2. Preserve a working account session
Keep an existing working session and preserve unsaved work. For a sign-in failure, use the official account-help route. Avoid repeated password or security resets until you confirm this is not a broader CodeSandbox issue.
3. Try another network
If possible, compare Wi-Fi with mobile data and note which one fails. Leave any required work VPN or security settings in place.
4. Capture support-ready evidence
Save timestamp, device, network type, exact error, final URL, and status code. Use the check workflow above before contacting CodeSandbox support.
Frequently asked questions about CodeSandbox problems
Is CodeSandbox down, or is the problem limited to one feature?
Run the codesandbox.io check and compare its original timestamps and responses with your actual error. The CodeSandbox dashboard, development environment and application running inside it are separate layers.
Where can I report a problem with CodeSandbox?
Use the community buttons on this page to share whether the service works for you. For help from CodeSandbox, use the official help/reporting resource linked above. Distinguish workspace startup from the application running inside it.
What should I check first when CodeSandbox is not working?
Identify whether the workspace cannot start or the app starts and fails on one command. Compare the environment/build log with a minimal project before restarting repeatedly.
What information helps CodeSandbox support investigate?
Sandbox/project, environment type, failed command, log excerpt and timestamp with secrets removed.