When you run the Custom Maintenance Wizard (CMW) to update your existing Office installation and you used the /L switch to specify a log file, the log file may not be created.

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The log file for the Custom Maintenance Wizard may not be created if you were required to restart your computer as a result of the update performed by the Custom Maintenance Wizard.

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Although the log file for the Custom Maintenance Wizard was not created, a Windows Installer log file was created during the update of your Office installation. This Windows Installer log file is located in your \Temp folder and has a name in the form CMW####.tmp, where #### is a random 4-digit number. Because the information in the Windows Installer log file is normally copied into the Custom Maintenance Wizard log file, the only information you are missing is the top header section of the Custom Maintenance Wizard log file.

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When you use the /L switch with the Custom Maintenance Wizard, the following process occurs:

1.	The log file you specified on the command line is created.
2.	This log file contains a header section with the following items: • CMW file path • ProductCode • ProductName • ProductVersion • Cached MSI path
3.	At the same time, a Windows Installer log file is created in the \Temp folder and this file has a name in the form CMW####.tmp, where #### are 4 random numbers.
4.	When the update has finished, the contents of the Windows Installer log file are copied below the header information in the log file you specified.
5.	After the Windows Installer log file information has been copied to the log file you specified, the Windows Installer log file is automatically deleted.

For additional information about using the Custom Maintenance Wizard, click the article number below to view the article in the Microsoft Knowledge Base:

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