Microsoft KB Archive/236456

= You receive an "Another installation is in progress" error message when you try to install Office or start an office program =

Article ID: 236456

Article Last Modified on 12/4/2007

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APPLIES TO


 * Microsoft Office Professional Edition 2003
 * Microsoft Office Basic Edition 2003
 * Microsoft Office Small Business Edition 2003
 * Microsoft Office Standard Edition 2003
 * Microsoft Office Student and Teacher Edition 2003
 * Microsoft Office XP Developer Edition
 * Microsoft Office XP Professional Edition
 * Microsoft Office XP Small Business Edition
 * Microsoft Office XP Standard Edition
 * Microsoft Office XP Standard Edition for Students and Teachers
 * Microsoft Office 2000 Developer Edition
 * Microsoft Office 2000 Premium Edition
 * Microsoft Office 2000 Professional Edition
 * Microsoft Office 2000 Small Business Edition
 * Microsoft Office 2000 Standard Edition

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This article was previously published under Q236456





SYMPTOMS
When you try to install Microsoft Office or to start an Office program, you receive the following error message:

Error 1500. Another installation is in progress. You must complete that installation before continuing this one.

When you click Retry, the message is displayed again. When you click Cancel, the installation stops.



CAUSE
Two or more instances of the Msiexec.exe service cannot be launched at the same time for two different products. One install or repair process must finish before the other process can be launched.



RESOLUTION
To resolve this issue, restart the computer.



For more information about similar messages, click the following article number to view the article in the Microsoft Knowledge Base:

822454 "ERROR_INSTALL_ALREADY_RUNNING" error message when you run the Setup program to install Office programs

Additional query words: OFF2000 dtir 1500error officexp error 1618 office 2003

Keywords: kbtshoot kbbug kbnofix kbsetup KB236456

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