MSI files are used by the windows installer to install or upgrade applications programs. Each MSI file contains all of the settings and configuration needed to install an application on your windows computer. Proxx.msi is an an installer file used by Microsoft office:
- Microsoft Office Professional Edition 2003 uses pro11.msi
- Microsoft Office XP Professional Edition uses pro.msi
- Microsoft Office XP Professional Edition with Front Page uses proplus.msi
Office 2007 has changed the name of the installer to Office32MUI.msi orOffice64MUI.msi. Keep in mind that you can receive similar errors for office 2007. Only the name of the MIS file will be different.
Bottom Line, without these files windows cannot update your Office applications, install optional features or install patches. When you receive an error message stating that windows cannot find proplus.msi , office cannot be installed, repaired or updated.
Why is the File Missing?
There are several possible causes for receiving this error:
- The file was accidentally or intentionally deleted
- The file is damaged or corrupted
- You have changed to drive letter or volume name assigned to the files location causing the path to be incorrect
- Damaged or corrupted hard disk or hard disk index
- Incorrect or missing registry entries
Can this Error be caused by a Virus or Other Malware?
Like most system errors, anything that can corrupt registry entries can cause error messages.
How to Fix a Missing ProPlus.msi Error
To repair this error performs the following steps:
- Run a complete anti-virus and anti-spyware scan of the computer
- Defrag the hard disk if needed by selecting Start->Control Panel->Computer Management as shown below
- When the screen below appears, select Disk Defragmenter
- Highlight the drive (usually the C Drive)
- Then click on Defragment
- Next check to see if the ProPlus.msi file is located on your hard disk by going to Start-Search and typing in the file name. The file should be located under the windows or Microsoft folder
- If the file exists it is corrupted, if not it was deleted. In either case, you need to replace it with a good version
- You can use either the repair CD or the installation CD that came with your computer.
- Copy the proplus.msi file from the CD to the correct directory
- If the repair CD has an application that will do repairs automatically after you answer a few questions.
- Finally, run a good registry cleaner to remove any incorrect or corrupted registry entries.
- Reboot the machine. Everything should be working properly.
Recommendation
Do routine maintenance on your PC to prevent problems from occurring. Monthly, do the following:
- Antivirus scan
- Malware scan
- Hard disk defrag if needed
- Run a good registry cleaner
- Backup your files so you don’t lose your data if the machine crashes and cannot be repaired.
Like most complex devices, regular maintenance can prevent the most common problems.
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