Windows Vista Wired Networking – DOT3SVC.DLL

Dot3svc.dll is part of the Windows XP or Windows Vista operating system. You'll find it in your Windows\System32 folder. You may see it described as the "Wired AutoConfig Service". Other files on your system may include dot3api.dll, dot3cfg.dll, dot3dlg.dll, dot3gpclnt.dll, dot3gpui.dll, dot3msm.dll, and dot3ui.dll. These files are used by your 802.1x wired network.

If you're having problems connecting a Windows Vista based system to your wired 802.1x network, you'll find a fix at http://support.microsoft.com/kb/937123.

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