To verify that the Channel bar is enabled when the Windows Desktop Update
component is not installed, click Start, point to Programs, point to
Internet Explorer, and then click Channel Bar.
If the Windows Desktop Update component is not installed, the position of
the Channel bar is specified by the "Window_placement" string value in the
registry. If the Windows Desktop Update component is installed, the
position of the Channel bar is specified by the Desktop.htt file.
For information about how to resolve this behavior if the Windows Desktop
Update component is installed, please see the following article in the
Microsoft Knowledge Base:
177141
Channel Bar Missing or Does Not Display Channels Properly