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I have these two directories on my hard drive, which seem to be identical, and each take up 2.4GB

C:\Users\All Users

Why do both exist? Can I get rid of one of them?

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The 2.4 GB only counts once against your total hard drive space. It's more obvious when there's a lot more in there. – WBT Feb 24 at 4:47
up vote 59 down vote accepted

Only C:\ProgramData actually exists as a "real" folder. C:\Users\All Users is a symbolic link to C:\ProgramData. That is, C:\Users\All Users points to C:\ProgramData, so if you navigate to the former, you are automatically redirected to the latter. That is why they appear identical.

C:\ProgramData is known as the "All Users Profile" and is required for the correct operation of Windows 7. Please do not delete it, if Windows even lets you.

C:\Users\All Users is there for backward compatibility. Poorly-written applications do not retrieve the path of the All Users Profile correctly. They say, "Windows, give me the name of the profiles directory." Windows says, "C:\Users." And the program says, "Okay, I know the All Users profile is called All Users and it's inside the profiles directory, so it must be C:\Users\All Users." Really, what the program should say to Windows is, "Windows, give me the path of the all users profile," to which Windows would say, "C:\ProgramData."

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The lack of space between Program and Data is a nice touch too... – Neil McGuigan Jul 23 '14 at 23:28

They are the same folder. Users\All Users is a junction to \ProgramData. From Application Compatibility: Junction Points and Backup Applications:

All Users legacy folder junction requirements: 

Sym links creation location     Destination  
..\Users\All Users              ..\ProgramData

Users\All Users is a link to the ProgramData folder for legacy reasons. It is a junction point (symlink in the UNIX world) and not a copy of the data. I have only the ProgramData folder on my Windows 7 (x64) computer. My guess it is safe to delete the junction point, but not necessary. I don't recommend deleting ProgramData.

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The folder C:\Users\All Users is a symbolic link to C:\ProgramData. They're two names for the same folder. It is there because many older programs used hard-coded paths to access the folder which doesn't exist any more.

You can delete C:\Users\All Users, but you won't gain anything from it. It consumes virtually no hard drive space.

Do not delete C:\ProgramData.

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