What is a Microsoft Teredo Tunneling Adapter error?

Q I have a new Fujitsu PC running Windows 7. I was checking various things in Device Manager when I noticed a yellow warning marker alongside the Network adapters group.

I clicked this to investigate the problem and saw errors alongside two entries - Microsoft ISATAP Adapter and Microsoft Teredo Tunneling Adapter.

I visited Microsoft's website for answers but could not find a solution. I do not seem to have any problems with my PC or any computing activities and I have no knowledge when this happened.

Indeed, I would have remained blissfully unaware had I not been checking something else. Is it anything to worry about?
Brian Johnson

A It is nothing to worry about, especially if everything is working as you want.

Microsoft's own advice on the ISATAP Adapter error message is that it can generally be safely ignored, because it doesn't actually indicate a problem with the adapter (you would have to ask Microsoft's programmers why this device gets flagged with an error).

If it adds reassurance, this is a common occurrence. And, if you want, you can prevent the error message from appearing. It has several possible causes, though, so finding the perpetrator may be tricky.

From the screenshot sent with your email, your PC seems to be built around a Nvidia motherboard. So, if you are keen to eradicate the warning triangles from Device Manager, we would start by updating the motherboard drivers.

Download and use a tool such as System Information for Windows to determine the precise motherboard model and download and install the latest drivers - you will find the Nvidia download web page here.