- The Windows Installer Cache, located in c: windows installer folder, is used to store important files for applications installed using the Windows Installer technology and should not be deleted. The installer cache is used to maintain (remove / update) the applications and patches installed on the machine.
- Windows 10 leaves behind lots of unnecessary files on your system after it's installed --- typically well over 20 GB. Here's how to safely clean them out with a few clicks.
- Apr 24, 2018 Disk cleanup in Windows 10. Content provided by Microsoft. To delete temporary files: Search for Disk cleanup from the taskbar and select it from the list of results. In Disk cleanup, select Clean up system files. Select the file types to get rid of. To get a description of the file type, select it.
- Removing old Windows installation files can't be done by simply selecting them and moving them to the Recycle Bin. You have to use Disk Cleanup, but luckily the process is simple and won't take.
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The Windows Installer UnUsed Files Cleanup Tool (WICleanup) by KZTechs is able to scan for orphaned MSI and MSP files in the Windows Installer folder and offers you an option to delete them from the comfort of a graphical user interface. 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.
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- How can I free up drive space from the Windows installer folder without killing Windows? 8 answers
My C:WindowsInstaller folder is huge: 14 GB. My understanding is that this is where failed updates go to die, and it should not be this big. What is the correct way to clean it on Windows 10?
Dmitry Grigoryevmarked as duplicate by fixer1234, DavidPostill♦, nKn, nc4pk, mdpcJan 11 '17 at 1:22
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
1 Answer
There is a relatively new tool called PatchCleaner which detects and can delete old MSI/MSP files.
From the PatchCleaner page:
Windows Installer Directory When applications are installed and updated on the Windows Operating System a hidden directory 'c:WindowsInstaller' 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:
(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. Delete them.
First use the move option and wait a few days before you delete the moved files.
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