Hey Hanz2pj,

Provide me the Manufacturer and Model number of your Network Adapter so that I can give you the link to download the driver. ISATAP Adapter in the. Vista client. Use the links on this page to download the latest drivers for your Microsoft ISATAP Adapter from our share libs. Windows Vista Networking http. And it will see the card and automatically download drivers. This Microsoft Fix It fix my driver isatap.

Welcome to Microsoft Answers Forum!
Provide me the Manufacturer and Model number of your Network Adapter so that I can give you the link to download the driver for your Network Adapter.
Isatap Driver Download For Vista

You can also contact your Manufacturer in getting the right drivers for your Network Adapter or access the Manufacturer’s website to get the right driver for your Network Adapter.
Step1:
However, try the below steps to fix the issue you are experiencing:
1. Click on Start, type Device Manager in the search box.

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2. In Device Manger, right-click the item of Microsoft ISATAP and select Uninstall.

3. Still in Device Manager, click Action and select Add legacy hardware.

4. Click next, and select Install the hardware that I manually select from a list (Advanced), click next.

5. Select Network Adapters and click next.

6. Select Microsoft in left panel and Microsoft ISATAP Adapter in the right panel.

7. Click next and finish the remaining wizard.
Step2:

Isatap

The ISATAP is related to Internet Protocol 6.

Please check if IPv6[Internet Protocol version] is enabled on your computer to obtain an IPv6 address.

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Access the link below which talks about how to configure a Windows Vista client to obtain an IPv6 DHCP address:

Microsoft Isatap Adapter Download For Vista

http://support.microsoft.com/kb/961433

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Refer the link below for further information:

http://support.microsoft.com/kb/932520
I hope the above information helps you.
Regards,

Manasa P-Microsoft Support