RAIDar can't access the ReadyNAS Ultra 2, does find it

john_in_maldon wrote:

I've installed our new ReadyNAS Ultra 2 ('RU2'), with it and 3 PCs plugged into a DLink switch. On one W7 and one XP machine RAIDar found the RU2, and I was able to Browse and map the required share. All access to the nas works fine. On the third (W7) PC RAIDar can find the find the RU2, but when I click Browse there is a long pause, and then a message dialog says "Windows cannot access //192.168.0.50. Check the spelling...." Thanks.

The errorcode given was 0x800704cf, and the problem was with a known bug in old (2010) versions of W7 with Device Drivers.
Basically the tunnelling IP6 -> IP4 driver (6TO4MP) was getting duplicated, until, in my case, there were 845 of them. This seems to mess things up!
(This clearly is only a problem with installations not connected to the internet and getting updates.)

See below if you have a similar problem.

http://social.answers.microsoft.com/Forums/en-US/w7network/thread/07c46785-cd1b-42c9-aa94-0adf1f4e2516