1. This article [Q217148] describes how to use and clear the AutoComplete feature that suggests matches for Internet addresses as you type them since the matches are determined by its examining your History folder, the contents of a folder you specify, the contents of the Folder pane in Windows explorer, or a list of your most recently typed addresses or commands that are encrypted and stored in the system registry in the following address, can suggest matches for folders and program names as you type them in the Address box, and is used in:
? The Address box in Internet Explorer, Windows Explorer, or on the desktop or taskbar.
? The Open box for the Run command on the Start menu.
? The Open box for the Open command on the File menu in Internet Explorer.
Caveat: If the cached addresses are not cleared from the Address box, quit Internet Explorer and delete all of the values except for the (Default) value from the aforementioned registry key, [Q157729].
2. If anomalous behavior still happens when using the AutoComplete functions, corruption may exists in any of the foregoing areas where the steps suggested at #6 in the article [Q276393] may be required. In addition, since it is possible a user profile itself may be corrupted, create a new user profile to see if AutoComplete then functions correctly.