Vista Wireless Performance Questionnaire

dathome wrote:

Hi, I'm new to a ReadyNas Duo. I was having constant trouble with loss of connection between Vista on my laptop and the Duo. I upgraded the wireless driver on my laptop and still had trouble, but the new driver had some diagnostics. I found that I was losing the connection because of a MIC Failure with the Duo, related to the TKIP security protocol. I changed the security protocol on my router to WPA2-AES, and since then I have not lost the connection when trying to copy files to the Duo. I'm so relieved now I just had to share this. Maybe it will help others.

This is the only reference to MIC failures I can find on the forum so I figured I'd give it a "+1".

After having tackled a disconnection problem between my Vista wireless laptop and ReadyNAS Duo in the past, I was surprised to find that lowering the MTU and mapping shares by IP address did not fix a similar disconnection issue on my girlfriend's new Windows 7 laptop.

Investigating with Wireshark simply showed a TCP re-transmit at the point of failure, followed by several ARP requests to find the NAS, before eventually timing out. However, as above, updating the drivers of her wireless adapter (Intel Centrino Wireless-N 1030) also installed an event viewer that immediately reported a MIC failure during the next test. I switched my router to WPA2-PSK AES and (it would appear) the problem has been solved!