I have the same problem and have spent 10 hours researching and trying to find a solution.
Using XP Pro. Everything worked fine for a year and suddenly I cannot automatically connect to the internet by opening IE6 (using DSL through PPPOE). I am using the same dial-up connection that has worked before.
It connects fine if I open Outlook or Symantec Live Update. Or even if I type a URL in Windows Explorer. But using IE.
Solutions Tried:
-) Checked Zone Alarm Pro, IE is OK to access Internet.
-) Tools > Internet Options > Connections tab. Making certain that default connection is correct and Always use Default connection is selected. All auto disconnects are cleared. All auto detects are cleared.
-) I deleted temp Internet files, cookies, and History as per Microsoft's instructions.
-) I checked registry to make certain that the SEN values are set to auto and not yes as per Microsoft's instructions.
Still, no luck. Remember, it connects fine if I manually connect, use Outlook, or Symantac Live Update.
Any help out there?