The Tools Window in ArcToolbox does not open

Description

The window for any tool in ArcToolbox does not open. There is no error.

Cause

Internet Explorer 7.0 Beta is installed.

Solution or Workaround

• Uninstall Internet Explorer 7.0 Beta. Install the full version of Internet Explorer 6.0 or higher.
• Install the ArcGIS 9.1 Desktop Patch for Internet Explorer 7 Beta 2 and Beta 3 Users. See the link in the Related Information section below.