How to Reinstall Isatap

The Microsoft Inter Site Automatic Tunneling Address Protocol, or ISATAP, device is responsible for allowing the newer IPv6 protocol to work inside the older IPv4 protocols. This is beneficial for network infrastructures that are working to merge their system over to the newer protocol. This device allows users to start creating software that utilizes IPv6 packets while also allowing systems on an IPv4 network to communicate within the application’s inbound and outbound traffic. Without this device driver, these networks would be forced to use only one version. If you suspect a problem with the ISATAP device driver, you can reinstall it through the Windows Device Manager component.

Step

Press the “Windows” and “R” keys simultaneously. This displays a “Run” dialog box.

Step

Type “Devmgmt.msc” in the dialog box and click “OK.”

Step

Click “View” and click “Show Hidden Devices.”

Step

Double-click “Network” adapters. This expands a list of all network devices installed.

Step

Right-click “Microsoft ISATAP” and click “Uninstall.” Click “OK” on the confirmation dialog box. This automatically removes the adapter.

Step

Click “Action” and select “Add Legacy Hardware.” This opens a Welcome to the Add Hardware Wizard dialog box.

Step

Click “Next.” This brings you to two options.

Step

Click the “Install the hardware that I manually select from a list (Advanced)” option and click “Next.” This loads a list of hardware types in a new window.

Step

Double-click “Network adapters” from the list of hardware types. This will display a list of network device manufacturers in the left pane.

Step

Double-click “Microsoft” from the manufacturer list in the left pane. This displays all Microsoft-related devices in the right pane.

Step

Double-click “Microsoft ISATAP Adapter” in the right pane and click “Next” to install it.

Step

Click “Finish” on the Device Installation Complete dialog box and restart your computer.