In the Device Manager you might be wondering why “Microsoft ISATAP Adapter #3” appears with a yellow exclamation mark next to it or you might see this error: “Windows cannot load driver (Code 31)” when opening the properties dialog box.
I found this on Windows 7 and the answer in this Microsoft KB article.
You can safely ignore this error message. This error message does not indicate a problem with the adapter. The adapter will continue to work correctly.