We also recommend running a registry scan to clean up any invalid ProPlusrWW.msi references which could be cause of the error. A large percentage of these file issues can be resolved with downloading and installing the latest version of your MSI file. How To Fix ProPlusrWW.msi ErrorsĬommonly, corrupt or missing ProPlusrWW.msi files cause these MSI errors, and are sometimes attributed to a current or past malware infection affecting MSDN Disc 5001.01.