Today while connecting my laptop to Internet I received an error message Error 651 :The Modem (or other Connecting Device) has Reported an Error. I use Tata Photon Plus to connect my laptop to Internet and the OS is Windows 7. Network Connection Prompt let me either redial or cancel it. I tried redial option but again I got the same error 651. Here I would like to share the steps I followed to fix the "Error 651 :The Modem (or other Connecting Device) has Reported an Error".
Reason for Error 651
At first I checked Microsoft knowledge base for the solution. According to them the reason for Error 651 :The Modem (or other Connecting Device) has Reported an Error is with Layer 2 Tunneling Protocol (L2TP). They define the reason for the issue as "Error 651 occurs because the Layer 2 Tunneling Protocol (L2TP) tries to create a host route and then detects that the route to the host that was created by the dial-up connection already exists". However, I am not sure if it is the right reason for the error 651 because I found this answer under Windows 2000 and the error message is related to establishing a VPN connection.
One of most discussed reason for Error 651 is the issues with “raspppoe.sys” file of Windows 7. In many support forums I read user comments about replacing “raspppoe.sys” file of Windows 7 with Windows Vista fixed their issue. I never tried this method so cannot agree or disagree.
Solution for Error 651
Here I would like to share some practical steps to solve the "Error 651: The Modem (or other Connecting Device) has Reported an Error".
1. Click on redial
2. Unplug the modem and reconnect (For external and USB modems)
3. Reboot your computer
4. Use Admin account to connect to Internet
5. Remove all Dial up network connections and create new one
6. Ensure that you are using the latest modem driver
7. Replace “raspppoe.sys” file with Windows Vista's same File
You can find “raspppoe.sys” file at the following location: c:\windows\system32\drivers. In the same way you should go to following location to remove dialup network connection: Control Panel> Network and Internet> Network Connections
1. Error 777: Connection Attempt Failed