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Use this guide to fix issues such as exercises not loading, code not running, video playback failures, or other course-related errors.
Quick Fixes
Try these steps first:
Refresh the page
Log out and log back in
Open the course in Incognito/Private mode
Clear your browser’s cache and cookies
If issues continue, run the System Check tool to identify technical problems.
For full compatibility, make sure your setup meets our System Requirements.
System Check: Failing Checks and Fixes
If any checks fail, follow the instructions below.
If you're using DataCamp through work or school, contact your IT administrator if needed.
Cookies – Failed
Enable cookies in your browser
Clear your browser cookies
If you're part of an organization, contact your IT administrator
WebSocket Connectivity – Failed
Make sure WebSockets are enabled in your browser
Check if firewall or antivirus software is blocking WebSockets
If you're part of an organization, contact your IT administrator
Request/Response Integrity – Failed
Ensure your firewall or security software allows access to DataCamp domains (see System Requirements)
If you're part of an organization, contact your IT administrator
Authentication – Failed
Make sure all other checks are passing
Log out and log back into datacamp.com
If you're part of an organization, contact your IT administrator
Critical Requests – Failed
Ensure your firewall or security software allows important platform requests (e.g. loading videos)
Ensure that exceptions for the DataCamp domains are added to the network security solution (see System Requirements)
If you're part of an organization, contact your IT administrator
Reaching Domains – Failed
- Ensure that exceptions for the DataCamp domains are added to the network security solution (see System Requirements)
If you're part of an organization, contact your IT administrator
Security Software That Might Interfere
If you're using any of the following tools, make sure they aren't blocking access to DataCamp:
Personal software: Norton, Avast, McAfee, Windows Defender
Workplace software: Corporate firewalls, proxies, or endpoint protection systems
Need Help?
Still stuck? Here's what to do:
Take a screenshot of the error
Include the course name and URL
Include a screenshot or summary of your System Check results