This article was previously published under Q305836
When you open an Adobe Acrobat .pdf file by using the 64-bit version of Internet Explorer 6, Acrobat opens the .pdf file in a new window.
This behavior occurs because Acrobat installs a 32-bit ActiveX control (pdf.ocx) that enables Acrobat to open .pdf files within the Internet Explorer interface. The 64-bit version of Internet Explorer 6 does not support 32-bit ActiveX controls.
To have Acrobat .pdf files open in the same Internet Explorer window, use the 32-bit version of Internet Explorer. To open the 32-bit version of Internet Explorer, use either of the following methods:
Click Start, click Programs, and then click Internet Explorer (32-Bit).
Click Start, click Run, and then type the following command in the Open box, and then click OK: