Windows File Explorer Not Showing Correct Folder Size If Folder Named 'Applications'

Anonymous
2018-05-03T21:08:26+00:00

Since installing the 1803 update, Windows File Explorer doesn't display the correct folder size if the folder is named 'Applications'.

There seems to be a bug that if the folder name is 6 characters or more and starts with 'Appli', the folder size shows significantly less than it actually is.  For example if the folder is named 'Apps' or 'Appli', it will display the size correctly.  If however it is named 'Applications' or 'Applix' or 'Appliy', then it won't display correctly.

The Feedback app doesn't work on my computer due to having telemetry settings set to 'Basic', therefore I am reporting the bug here instead.

OS Version:

Windows 10 Pro X64 (17134.1, 1803)

Screenshots:

Windows for home | Windows 10 | Files, folders, and storage

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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  1. Anonymous
    2018-07-20T16:40:07+00:00

    I am seeing a similar issue. A parent folder shows 11.9GB in size, but the sum of the sub folders is 150GB. This was for an Amazon Drive file sync folder... I re downloaded my amazon drive to a new folder and used beyond compare 4 to calculate more detailed comparisons between new and old. This appears to be a windows issue.

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  2. Anonymous
    2018-07-25T19:01:34+00:00

    Other posts confirm that this is a path length problem.

    Why this matters:

    * The potential for loss of data seems very real. One scenario: a folder containing a set of nested folders forming a long path that breaks folder properties, with no files in any of the folders. This top-level subfolder is followed by other subfolders with thousands of files. Folder properties would show 0 files thanks to this bug. User shift-deletes the root folder thinking it's safe and watches in horror as their data is purged.

    * Browsers and modern dev tools like npm create these paths all the time. This is not rare or unusual.

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  3. Anonymous
    2018-07-25T20:49:36+00:00

    Dave,

    Wow!

    Thanks for that show stopping thought.

    Now you have me wondering if I might have already done that to either myself or worse, a customers overcrowded back up drive that was absolutely jam packed with backups of backups (He thanks his Iphone for that little disaster), for some reason Time Machine also backed up the previous backup's data, and yes, eventually it filled a 1.5 TB hard drive and he came to me because his last boot took a half hour :)

    I do however recall deleting a few folders that showed 0 (empty folder)....I sincerely hope they were

    Ugh!

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  4. Anonymous
    2018-07-29T22:23:47+00:00

    I am experiencing the same issue I have almost 100 gigabytes in folder on my C:/Temp drive and it is only displaying less then 2gbs when viewing properties for that folder...?  Weird?  I have the same 1803 version too?

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  5. Anonymous
    2018-08-02T20:17:34+00:00

    Path lenght !! I just checked. I used a program to check if names exceeded the name-size limit. Once I solved the problem, the folder size returned to normal.

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