Best way to clean up Windows Installer cache?
You'll want to be careful about this. The cached installation packages may be necessary for installing application patches, uninstalling certain applications, or repairing applications and the OS.
However, if your computer is running well at this point and having more free HDD space is more important than being able to remove patches or repair applications, then CCleaner is the tool you'll want to use.
In Windows XP, in the Cleaner tool in CCleaner, in the Windows tab, 3rd from last option should be "Hotfix Uninstallers".
In Windows 7 you cannot remove the OS patch cache because it isn't really quite the same thing anymore and cannot be handled the same way. But it also doesn't store nearly as much info. If you hadn't noticed, Windows 7 patches tend to be much smaller than comparable WinXP patches due to efficiencies developed in the patching system for 7.
user541686
Updated on September 18, 2022Comments
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user541686 over 1 year
Whats the "safest" way to clean up large files in the Windows Installer cache? Is deleting the files the only way, or is there a better way to "unregister" the cached files or something?
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user541686 over 12 yearsCCleaner cleans up the patches? I'm not sure where to find the option...
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Ravindra Bawane over 12 yearsWhat OS are you running? Please update your question with that info.
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user541686 over 12 yearsWindows 7; updated.
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Ravindra Bawane over 12 yearsThen you're talking about the C:\Windows\WinSXS directory?
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user541686 over 12 yearsUhm, no. I'm talking about
C:\Windows\Installer
, which behaves the same way as in XP. -
fschmitt over 10 yearsCan't find the option either.
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Ravindra Bawane over 10 yearsAs I stated in the answer above, if you're running Windows 7 you will NOT see the option to clean up Hotfix Uninstallers in CCleaner. This option is ONLY available when running Windows XP (I have not tested with pre-XP versions).