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IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/256986/EN-US/ )Description of the Microsoft Windows Registry
When you quit Microsoft Internet Explorer, you may not be prompted to disconnect.
This behavior can occur if the EnableAutodisconnect value in the registry is set to a data value of 00 00 00 00.
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
To resolve this issue, modify the data value of the EnableAutodisconnect value in the following registry key:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet SettingsChange the data value to 01 00 00 00. After you make this change and quit Registry Editor, restart your computer.
NOTE: Auto Disconnect can also stop responding if another application is using the connection. The other connection may not be obvious. Applications such as Active Desktop, some screen savers, offline content collection for Internet Explorer, and some scheduled tasks may use the Internet connection in the background.
When you change the Auto Disconnect option, the setting may not take affect immediately. You must close Internet Explorer, and then disconnect from your Internet Service Provider (ISP). When you reconnect to your ISP, the settings take affect.