Forum Discussion
tylerdobie
Apr 06, 2026Brass Contributor
c:\windows\installer bloat issue seems to be only getting worse
Hi folks, I have had several users with full hard drives lately ... and the issue in each case has been the c:\windows\installer folder taking up anywhere from 60 - 120GB! I found a free tool calle...
Mustafoan
Apr 10, 2026Brass Contributor
You're correct that the C:\Windows\Installer folder can grow significantly over time, especially on systems with many software installations, updates, or uninstalls. This folder stores Windows Installer cache files (.msi and .msp files) necessary for repairing, modifying, or uninstalling applications.