Windows
error
Connection
failed
651

How to Fix Connection Failed Error 651 in Windows 7/8/8.1/10

Follow the below steps to Fix Connection Failed Error 651 in Windows 7/8/8.1/10:

Steps 1: Restart Computer and Modem:

Steps 2: Update Network Adapter Driver:

Steps 3: Troubleshoot Network Settings:

1)Check the IPv6 Setting:

2)Check to Dial-Up a Connection:

3)Reset TCP/IP Settings:

4)Disable Auto-Tuning:

5)Run Network Troubleshooter:

4)Reregister raspppoe.sys file:

Read More - https://www.itsmarttricks.com/how-to-fix-connection-failed-error-651-in-windows-7-8-8-1-10/