File Explorer way off in showing folder size


  1. FrostyWinnipeg
    Posts : 26
    Win 10 Pro x64
       New #1

    File Explorer way off in showing folder size


    File Explorer way off in showing folder size-difference.jpg

    File Explorer shows size as 2.11GB while alternate program TreeSize Free shows the true size of 128.9GB.
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  3. AndreTen
    Posts : 30,609
    Windows 10 (Pro and Insider Pro)
       New #2

    Could be they are both wrong. If you have some links in your folders (OneDrive or similar), try also Wiztree.
    There is huge difference in files number!
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  4. Bree
    Posts : 31,681
    10 Home x64 (22H2) (10 Pro on 2nd pc)
       New #3

    FrostyWinnipeg said:
    File Explorer shows size as 2.11GB while alternate program TreeSize Free shows the true size of 128.9GB.

    File Explorer can only count the size of the files in folders that you have permissions for. TreeSize Free when run as administrator can see everything.

    From the sizes listed in your screenshots, it would appear you only have permissions for the D:\Caroline 2019.02.06\Documents folder.
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  6. FrostyWinnipeg
    Posts : 26
    Win 10 Pro x64
    Thread Starter
       New #4

    AndreTen said:
    Could be they are both wrong. If you have some links in your folders (OneDrive or similar), try also Wiztree.
    There is huge difference in files number!
    WizTree/TreeSize have the same numbers.

    If I go into the folder and check the properties of the 5 internal folders then it comes up close to what WizTree/TreeSize is reporting.
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  7. Ztruker
    Posts : 14,046
    Windows 11 Pro X64 22H2 22621.1848
       New #5

    There is a bug in Win 10 introduced in 1803 or there-bouts that causes File Explorer to report wrong folder sizes. It's caused by long path lengths (greater than 260 characters I think).

    Problem is fixed in a later 1809 build.
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  8. binaryman3
    Posts : 1
    Windows 10
       New #6

    re


    Try running Directory Report as an Administrator
    The other programs may be following hard/soft links - which may double count files
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