"Dial-Up Networking could not establish a compatible set of network
protocols..." (Windows 95)
Almost every time this error message appears, it is caused
by having the Server Types settings incorrect in the Properties of the Dial-Up
Networking connection. Open up the Dial-Up Networking folder in
My Computer and click on the connection icon (probably called exit109)
with the right mouse button. Choose Properties from the pop-up menu.
Then choose Server Types.
The ONLY thing which should be checked on this screen
is TCP/IP. If anything else is checked, uncheck it. Look again and ensure
that NOTHING else is checked. In particular, see that Enable
software compression is not checked. When you are absolutely
CERTAIN that only TCP/IP is checked, look again
one more time, paying close attention to the boxes labelled Log on to network
and Enable software compression. These boxes should NOT under any
circumstances be checked.
Click Okay all the way out and try again. If you still get the error, reboot your
computer and try again. (Rebooting your computer is highly recommended when having
any kind of problems.)
If you are still getting the error after rebooting, things get a little more serious.
This means your computer is having trouble negotiating the connection with ours
for some reason. The next thing to check is the speed you are trying to connect
at. If you are using a 386, or any computer without a 16550 high-speed UART,
or if you have poor telephone lines, you may need to lower your connection speed.
Double-click Dial-Up Networking in My Computer. Click on the connection
icon (probably called exit109) with the right mouse button, and choose
Properties from the pop-up menu. Then click Configure. The
Maximum speed should be set as follows:
- Pentium with 28.8k modem: 57600 or 115200
- 486 with 28.8k external modem: 38400
- 14.4k modem: 19200
- 386 or any computer without 16550 (or better) UART: 9600
