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Windows 10 Storage usage doesn't add up - a lot of 'missing' GB in Temporary Files

When looking at the "Temporary Files" section of the Windows 10 settings page for Storage it reads 17.2 GB. That's a lot. Almost as if there's an old version of windows lurking about.

But when I click onto Temporary files and tick all the boxes, the total only adds up to a 1.08 GB. Where is there rest? What is using up all that data?

I'm actually beginning to think Windows 10 has wrongly characterised files that are in actual fact not 'temporary', but important to either software or games. Which is why I cannot find the mystery GB's. When I do a disk analysis I can't find anything out fo the ordinary.

Edit: To continue further, Windows 10 cannot tell me the precise size of a lot of software/games when I click on "Apps & games". See below:

Could that be related? And it just cannotdifferentiate things well? Or is there a windows.old or and old update hogging up space somewhere?

Answer
Answer
Hi Nigel

The 1803 Update to Windows 10 introduced a bug into Explorer.exe, where is it not able to correctly read the metadata from files. this results in folder sizes being reported incorrectly. A fix has been released to Insiders and should be released to the general public soon . . .

Click the link below to download a small free utility called Treesize. Using that tool, you will instantly see correctly where this space is being used

https://www.jam-software.com/treesize_free/

Once you have worked out where this space is being used, please let me know so I can advise on what is safe to remove and indeed if there is an underlying problam . . .

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Last updated December 30, 2024 Views 17,852 Applies to: