Some Parallels Plesk Panel files are missing on my server. How do I extract them from the installation package?
The following command may be used to extract the contents of the plesk.msi package:
msiexec /a PathToMSIFile /qb TARGETDIR=DirectoryToExtractTo
Make sure you replace PathToMSIFile and DirectoryToExtractTo with actual values.
After that, it is recommended that you reinstall Micro-Updates in order to have all of the repaired files on the server.