Video Conferencing - Connection Problems

Language note: Media and interface labels remain in their original language. Portuguese labels are kept as displayed, with English explanations where useful.

Troubleshooting Guide: Video Conferencing Connection Problems

🛠️ Introduction

If you are having trouble connecting to the Slingui virtual classroom, follow the steps below to identify and resolve the problem.

1. Check Your Browser

Make sure your browser is up to date and clear its cache. If you use Google Chrome, follow the instructions below:

✅ Update Google Chrome to the latest version: 🔗 Download Google Chrome
✅ Clear your browser’s cache and cookies: 🔗 Clear cache and cookies
✅ Open an incognito (or private) window and try accessing the virtual classroom.

Tip: In Google Chrome, press Ctrl + Shift + N (Windows) or Command + Shift + N (Mac) to open an incognito window.

Note: We recommend using Google Chrome for the best compatibility with the Slingui virtual classroom.

2. Check Server Access

Check whether you can access the virtual classroom:

✅ Open 🔗 https://slingui-classroom.com directly in your browser.
✅ If a 404 error appears, this indicates that the virtual classroom server is accessible, but the specific page was not found.

Note: If the link does not load or displays other errors, the problem may be related to local settings, such as your browser, firewall, or network.

3. Check Your Firewall

The virtual classroom uses secure WebSocket connections (wss://), which may be blocked by firewalls or antivirus software.

✅ Contact your network administrator to confirm that the required ports are allowed.

Share the Virtual Classroom Firewall Configuration Guide with them; it contains all the necessary information.
✅ Check whether your antivirus or security software is blocking WebSocket connections.

4. Browser Extensions

Extensions can interfere with loading the virtual classroom, especially ad blockers, script blockers, or privacy extensions.

✅ Temporarily disable all browser extensions.
✅ Try accessing the virtual classroom again.
✅ If the problem stops, re-enable extensions one at a time to identify the one causing it.
✅ For script-blocking extensions, add slingui-classroom.com to the exception list.

Tip: Extensions such as AdBlock, uBlock Origin, Ghostery, and Privacy Badger are the most common causes of blocking.

5. Diagnostic Logs

To send detailed diagnostic logs of the problem to support, use the Ctrl + Shift + S shortcut:

While in the virtual classroom, press Ctrl + Shift + S (Windows/Linux) or Command + Shift + S (Mac).
A window will appear with two options:
- Download Console Logs – captures all console messages (errors, warnings, information).
- Download Network Logs – captures all network requests (WebSocket, HTTP, HTTPS).
Click the buttons to download the .json log files.
Attach these files to your support email.

Note: The logs contain technical information that helps the support team quickly identify the cause of the problem.

📞 Need Help?

If you still cannot connect to the virtual classroom after following all the steps, contact the Slingui support team.