Mobile Broadband Error 678

This is one of the familiar errors that every Mobile Broadband user would have seen. It says, “Error-678, The remote computer did not respond. Unable to establish a network connection.” Users normally get this error when trying to connect to the mobile broadband network. It means that the USB modem was unable to communicate with the operator since the mobile network neglected or did not respond to the connection request. Normally in this condition a user will be unable to connect to the network even if they have full coverage and good signal strength.

There are several occasions where a user can get this error code. It can be an issue with the computer or an issue with the connectivity from the operator’s end or it could be an issue related to billing or excess usage. The mobile operators can block the user from accessing the network due to activation issues, non-payment of bills or excess usage beyond the fair usage policy. For all of these issues users shall contact the mobile operator’s customer care.

However, if does not have any of those claims, please follow the below mentioned steps to resolve the issue:

1. Restart the computer and wait until all the programs are completely loaded in the desktop. Try to connect again.
2. Check if you have the default username, password and telephone number entered in the connection manager software.
3. Disable antivirus or firewall, and try connecting. If it solved the issue, then check for any recent updates and uninstall it or contact the antivirus manufacturer to reconfigure it.
4. Uninstall and reinstall the connection manager software and reconfigure it.
5. Reset the TCP/IP stack if it’s a windows based computer. Click on start- Run- Type cmd- Press Enter- Type “nets hint ip reset resetlog.txt” – Press Enter and restart the computer.
6. The computer should be able to connect to the mobile broadband network. If it’s still unable to connect then check if the dongle is working on a different computer. If it’s working then it’s an issue with the computer. Please contact hardware manufacturer or the computer manufacturer.

Click here for Mobile broadband complaints