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Title
Minor Upgrade Does Not Install Files

Summary

Troubleshooting tips for minor upgrade.

Symptoms

When installing a minor upgrade, no files are installed. The following MSI command lines do not work:

REINSTALLMODE=vomus REINSTALL=ALL

REINSTALLMODE=vomus REINSTALL=ALL ADDLOCAL=MyNewFeature1,MyNewFeature2


Cause

The first command line works if all new files have been added to components and features that existed in the original version of the package. However, if new features (both root features or sub-features) were added, ADDLOCAL needs to be used in the command line, similar to the second command line. However, when ADDLOCAL is specified, the REINSTALL=ALL command cannot be used. The REINSTALL property has to explicitly list all of the Features being reinstalled.

Example:

REINSTALLMODE=vomus REINSTALL=MyOriginalFeature1,MyOriginalFeature2 ADDLOCAL=MyNewFeature1,MyNewFeature2
This limitation exists because the Windows Installer evaluates the ADDLOCAL property before evaluating the REINSTALL property. The end result is that the REINSTALL="ALL" command line will overwrite ADDLOCAL's attempt to install the new feature thus resulting in only the existing feature being reinstalled. Explicitly setting the REINSTALL property ensures that the ADDLOCAL property successfully triggers the installation of added features.

Additional Information

More information on Component Rules can be found here.
Information about how Windows Installer evaluates REINSTALL and ADDLOCAL can be found here.
Additional information on this topic can be found in the Windows Installer Help Library topic Controlling Feature Selection States.
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Minor Upgrade Does Not Install Files