We have observed that a small number of Win95 users seem to have occasional problems connecting. The symptom is that Windows 95 will dial the number, successfully login and then immediately fail during the PPP negotiation phase with a message similar to: "Dial up networking could not negotiate a compatible set of network protocols you specified in the server type setting". Often rebooting the computer can clear the problem. Sometimes doing nothing but waiting a few minutes and then redialing will cause the problem to disappear. For some users, they must remove and then add back the "TCP/IP" networking protocol to clear the problem.

The primary difficulty is related to the NetBEUI, IPX/SPX, and TCP/IP protocols used by default for a Dial-Up Networking "connectoid". (Hey, we don't name these things... "connectoid" is Microsoft's name for the Dialup Networking configuration).

For use with ISPs, nothing should be bound to the Dial-Up Networking Adapter but the standard Internet TCP/IP protocol. Something occassionally causees Win95 to bind other protocols to the adapter as well. This is normally harmless and the only effect is to slow down the login process as Windows has to timeout on the unsupported protocols. Occassionally this process fails and the error message "Dial up networking could not negotiate a compatible set of network protocols you specified in the server type setting" error appears.