How to Fix Error 813 Error – Attempting to dialup gives "Opening port... Error 813: another connection is using...."

The error 'Opening port... Error 813: another connection is using....' occurs when you attempt to establish a dial-up connection while a previous broadband connection already exists on the same device or port. This issue affects users who have multiple internet connections set up on their computer, causing frustration due to the lack of a direct solution.

We understand that this problem has been a source of frustration for many users, with no clear fixes available in the past. However, we are committed to providing you with effective solutions to resolve this issue and get back to your dial-up connection.

⚠️ Common Causes

• The primary reason for this error is that Windows is unable to distinguish between a dormant broadband connection and an active one. When you wake up your computer from sleep, the operating system checks for any active connections and finds the previous broadband connection still established on the same port, causing the error.
• Another possible cause could be the presence of multiple network adapters or the use of a virtual private network (VPN) that may interfere with the dial-up connection process.

🛠️ Step-by-Step Verified Fixes

✨ Wrapping Up

By following these steps, you should be able to resolve the error 'Opening port... Error 813: another connection is using....' and successfully establish your dial-up connection. If you continue to experience issues, it may be necessary to seek further assistance from a technical support specialist.