Vista and some Linksys routers/firewalls = stalled sessions (Workaround)

There have been some reports on the Internet about networking problems after installing Vista. If you are having trouble getting IMAP/POP3 mail or trouble using RDP with Vista and are behind a Linksys router/firewall, try this under Vista:

“netsh int tcp set global autotuninglevel=disabled”

If your networking problem goes away, it is due to a bug in MANY Linksys devices.
So far, most reports are coming from RV042 and RV082 devices, but it seems pretty widespread in general.

Linksys has a beta firmware available for the RV082 that fixes this problem.

Once you install the updated firmware, you can re-enable auto tuning with:

“netsh int tcp set global autotuninglevel=normal”

Thanks to my friend Tom for pointing this message thread about it here.

I'm sure other devices/stacks might have trouble as Vista gets deployed more widespread. Time will tell.