Error Number and Description
Windows versions
 
(Click on your  version)
Error 691: Username -Password Invalid 95/98/ME 2000/XP
Error 602: Port Already Open 95/98/ME 2000/XP
Error 629: Port Disconnected by remote computer. 95/98/ME 2000/XP
Error 630: Port Disconnected due to hardware failure. 95/98/ME 2000/XP
Error 631: Port Disconnected by the user. 95/98/ME 2000/XP
Error 645: Internal Authentication Error. 95/98/ME 2000/XP
Error 650: Server not responding 95/98/ME 2000/XP
Error 676: The line is busy All Windows
 Error 677: A person answered instead of a modem All Windows
Error 678: No Answer 95/98/ME 2000/XP
Error 680: There is no dial tone 95/98/ME 2000/XP
Error 731:  Protocol Not Configured All Windows
Error :Access Denied NT Only
Error: TCP/IP not Installed 95/98/ME 2000/XP
Error Kernel32.DLL All Windows
AOL Starts when I connect to 550Access. All Windows
Error: Winsock 2.0  not installed.  95 Only
Error :Proxy Server All Windows
Error : LGN2 95/98/NT/ME 2000/XP
Error : PRM2 95/98/NT/ME 2000/XP