How To Fix Modem Error 633
This error indicates that your modem is not configured properly. Error 633 affects all modem model and isn’t connected to any specific device. Here’s how one user describes this issue: This error may occur if the communication port used by your modem has been reserved by another software program. Error 633 also occurs when users set up multiple internet connections. If error 633 is blocking your Internet connection, follow the troubleshooting steps listed below....