About 4 or 5 users come in via the WAN on Terminal Server (seperate server). The problem is that as soon as there are more than 3 or 4 users total, they get 49153 errors. When everybody goes home it seems more stable and as the Accpac users drop down it also works fine, even over Terminal Server.
We moved the Exchange and Accpac onto a seperate server but it is still unstable with more than 5 users. When the 49153 error appears, the mapped drive is still there and you can see the data, but the DNS server is gone. Also, nobody can log in again "no domain or password incorrect" type of error. Reboot takes you back on for about 15 min before the count is up again and you get 49153 again.
The server engine has been set up with the Accpac suggested settings. Does anybody have some suggestions on Server Engine or client side requester settings.
P.S. The site was stable for a few months up to 3 weeks ago.