DUN: pops up intermittently

The DUN poping up is due to a setting in the Internet Options.

To fix this go to Internet Options either through Control Panel or through IE | Tools | Internet Options.

Select the Connections tab, and click the radio button next to 'Never diala connection'.

This will stop the DUN box appearing. The assumption here is that you have a permanent connection to the Internet (ie cable) and don't require the DUN.

If you DO have a dial up modem then you will have to manually activate the DUN before you can connect to the Internet. You can always put the DUN shortcut on the desktop to make this easy.

I have had this happen before even with the Do Not Dial Bubble checked in Internet Explorer.

Turned out for us, it was the dial up software that came with ATT Global internet.

Updating that software stopped the problem.

Is this an older NT or Win98 machine? Have you tried updating the DUN software?

This problem stems from user installed software. The problem is most annoying when you are using internet connection sharing and the host keeps dialing. Look for the following.

If the following software is installed make sure all updates are performed.

Norton Antivirus, McAfee Antivirus, Realplayer, Quickbooks, Other Software that requires updates.

Make sure there are no VIRUSES. Look in the following registry key entry and see if there are any weird settings that don't belong. Export the entire key to a file then remove them one at a time until you find it. If you have Win98 use the msconfig utility.

HKEYLocalMachine/Software/Microsoft/Windows/CurrentVersion/Run/RunServices

Many times it is a program that starts up and runs on start up. One that comes to mind is a quickbooks program.

Good Luck.

I do mostly agree with Answer 5, but one question: Do you have any download managers such as Getright installed? Download managers try to dial using DUN every now and then.
As stated in Answer 5, check if any program in the Startup is doing this.Hope this helps.