Reset TCP/IP – Network Troubleshooting

  • Click Start Menu, type cmd in the search box or run box ( Hold down Ctrl + Shift and hit Enter)Type the following commands, each followed by pressing enter.
  • ipconfig /flushdns
  • nbtstat -R
  • nbtstat -RR
  • netsh int ip reset all
  • netsh int ipv4 reset
  • netsh winsock reset catalog
This will rebuild the tcp/ip protocol stack (fully)

After rebooting, run a command prompt as an administrator and type:

  • netsh interface tcp set global autotuninglevel=disabled


See also –
Speed up Windows 7 and Vista internet connections

About TCAT Shelbyville IT Department

The Tennessee College of Applied Technology - is one of 46 institutions in the Tennessee Board of Regents System, the seventh largest system of higher education in the nation. This system comprises six universities, fourteen community colleges, and twenty-six Applied Technology Colleges.
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4 Responses to Reset TCP/IP – Network Troubleshooting

  1. ted says:

    netsh int reset all is not a valid command.
    netsh int ipv4 reset works

  2. Mike says:

    Is there a similar command line command for dumping all current server authentications without rebooting?

    For example, I’ve connected to \\server1\ as administrator on users computer. Is there a command I can type to drop that authenticated connection?

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