For detailed Windows Installer logging information, set the following values in the registry:
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Installer]
"Debug"=dword:00000003
"Logging"="voicewarmup"
Setting this value will generate detailed logging for all actions performed by Windows Installer.
The output file varies depending on the context of the installation; see the next section for details.
When verbose logging is enabled for Windows Installer, there are two types of log files that can be generated:
For deployment-related actions such as the advertisement of user assigned applications, Windows Installer runs in the system context. The logs are created in the system temporary folder: %windir%\temp\MSI*.log.
For user initiated actions, such as installation of applications from Add/Remove Programs, the logs are in the user’s temporary folder: %temp%\MSI*.log.
These verbose logs contain detailed information about every action taken by Windows Installer when attempting to install a package.
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