Windows Patch Cleaner

This is one of those utilities I will be installing on ANY PC I own. As you all know MS stores every freaking patch on your C:\ drive in use or not.

Well, this little utility can move those files for you (and smartly I might add) to a new location (say a large USB drive) freeing up GIGABYTES of space. I run this once a month and move at least a few hundred megabytes. The first time I ran it, it was 17 GB's of patches! INSANE! 

Windows Installer Directory - When applications are installed and updated on the Windows Operating System a hidden directory "c:\Windows\Installer" is used to store the installer (.msi) files and the patch (.msp) files.

Generally these files are important as during updating, patching or uninstalling software it will use the .msi/.msp files. If you blanketly delete all the files in this folder, you will find yourself needing to rebuild windows.

Over time as your computer is patched and patched again, these installer files become outdated and orphaned. They are no longer required, but they can take up many gigabytes of data.

PatchCleaner - PatchCleaner identifies these redundant/orphaned files and allows you to either:

1 - (Recommended) Move them to another location. If you want to play it safe, just move them to another location, and you can always copy them back.
2 - Delete them.

How it works - HomeDev has had many queries about how PatchCleaner works and if it can be trusted to do the right thing.

Its pretty simple. The windows operating system holds a list of current installers and patches, that can be accessed via WMI calls, (Windows Management Instrumentation ).

PatchCleaner obtains this list of the known msi/msp files and compares that against all the msi/msp files that are found in the "c:\Windows\Installer" directory. Anything that is in the folder but not on the windows provided list is considered an orphaned file and is tagged to be moved or deleted.

HomeDev cannot warrant that PatchCleaner will not find a false positive and delete a required patch which is why we have added the filter feature to filter and recommend using the move function, that way you can always copy the patches back if required. Please see the Known Issues List at the bottom of the page 

Want more? - Click Here.

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