Restart Everything

• Close VS Code completely

• Kill all Jupyter/Python processes in Task Manager

• Restart your computer

2. Reset Jupyter Configuration

• Delete Jupyter config files (found in ~/• jupyter and ~/. ipython folders)

• Let VS Code recreate fresh configs on next launch

3. Change Default Port

• Modify VS Code settings to use a different port (like 8889 instead of 8888)

• Check for port conflicts with other applications

4. Reinstall Dependencies

• Update Jupyter, ipykernel, and notebook packages

• Reinstall the Python kernel

5. Check System Permissions

• Temporarily disable firewall/antivirus

• Ensure VS Code has proper network access

Prevention Tip:

Always properly shutdown kernels using the VS Code interface before closing notebooks.

If still not working:

• Try creating a new Python environment

• Test with a different Python version

• Check VS Code/Jupyter extension updates