Overview

Users may encounter the following message when attempting to upload a document to Kahootz:

There was an error uploading your file "<filename>": HTTP Error

This error typically indicates a problem outside of Kahootz, most commonly a network, local device or internal IT issue.

Common Causes

Please see below the most common reasons why the HTTP Error message is displayed.

Corporate IT policies | Some organisations place restrictions on file‑transfer protocols or limit the size/type of files.

Local device restrictions | Security software, firewalls, or browser settings on the user’s computer may block the upload.

Network instability | Intermittent or overloaded connections can interrupt the upload process, resulting in an HTTP error.

Browser incompatibility | Certain browsers or outdated versions may not handle Kahootz’s upload mechanism correctly.

Corrupted or empty files | Attempting to upload a file that is empty, incomplete, or corrupted can trigger the same error.

Step‑by‑Step Troubleshooting

1. Verify Network Health

   • Ensure you have a stable internet connection.

   • If you are on a corporate network, try switching to a different Wi‑Fi network or a mobile hotspot to rule out internal bandwidth limits.

2. Check the File

   • Open the file locally to confirm it is not empty or corrupted.

   • If possible, re‑save the document (e.g., export a PDF again) before uploading.

3. Test with a Different Browser

   • Supported browsers include the latest versions of Chrome, Firefox, Edge, and Safari.

   • Clear the browser cache or use an incognito/private‑browsing window.

4. Disable Local Security Interference

   • Temporarily disable any third‑party antivirus or firewall software that might be scanning outgoing uploads.

   • If the issue resolves, add an exception for Kahootz in the security tool.

5. Contact Your Internal IT Department

   • If the problem persists, contact your organisation’s IT support. Provide them with the exact error message and the steps you have already taken.

   • Ask whether there are any network policies (e.g., proxy settings, content filters) that could affect HTTP uploads.

6. Try a Smaller or Different File Type

   • Upload a simple text file or a small image to see if the issue is size‑ or type‑related.

   • If smaller files succeed, the limitation may be a file‑size restriction imposed by your network.

When to Reach Out to Kahootz Support

If you’ve completed the troubleshooting steps above & the error still occurs across multiple devices and networks.

The issue may be on the platform side. In that case, gather the following information before contacting support:

• Exact error message and timestamp.

• File name, size, and type.

• Browser name and version.

• Screenshot of the error (if possible).

• Any recent changes to your network or security settings?

Preventive Tips

• Keep your browser up to date.

• Regularly clear cache and cookies.

• Store files on a reliable local drive before uploading.

• Coordinate with your IT team to ensure Kahootz is whitelisted in corporate firewalls and proxy servers.

For further assistance, please visit the Kahootz Help Centre or submit a support ticket with the details outlined above.