Bug: Files is allowing forbidden folder names (CON, NUL, etc)

[Araraura]

Description

It seems that Files doesn't prevent the user from creating files or folders with forbidden names that regular File Explorer would otherwise prevent.

It should prevent the user from creating files or folders named (in either lowercase or uppercase):

CON
PRN
AUX
NUL
COM1, COM2, COM3, COM4, COM5, COM6, COM7, COM8, COM9, COM0
LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, LPT9, LPT0

Steps To Reproduce

1. Open Files
2. Go to a place where you can freely create folders or files
3. Create a folder or a file with a forbidden name (list in the description)
4. Open file explorer and create a folder or a file with the same name
5. File explorer will not allow the creation of a folder or a file with that name

Steps to fix

• Display text when forbidden folders names are entered into the new folder modal
• Display error content dialog when users try renaming a folder to con

Files Version

2.3.3.0

Windows Version

Windows 11 21H2 22000.778

Relevant Assets/Logs

n/a

[Josh65-2201]

It doesnt make the file/folder for me when using the names

[Araraura]

It doesnt make the file/folder for me when using the names

I tried doing that in documents. I'm also using the sideload version of Files

[sthivaios]

It doesnt make the file/folder for me when using the names

I tried doing that in documents. I'm also using the sideload version of Files

Yes, I just tried that and it let me do it


(in the documents folder). And I was able to see the folder in the normal explorer app.


I also could not delete the folder through the Files app.

I managed to delete it through the normal explorer program (Windows Explorer).

[Josh65-2201]

Seem it only effects Windows 11. @yaichenbaum

[Josh65-2201]

Is this an issue in the preview version? https://files.community/download/preview

[Araraura]

Is this an issue in the preview version? https://files.community/download/preview

I just tried checking real quick and it seems that the issue is still there in the preview version

[sthivaios]

Is this an issue in the preview version? https://files.community/download/preview

I would check it too but it doesn't even wanna install right now. It has been stuck at the same screen for over 5 minutes now.

(And it is definitely not a network issue from my side, because I just downloaded the installer, and I can ping google.com just fine.)

[Araraura]

Is this an issue in the preview version? https://files.community/download/preview

I would check it too but it doesn't even wanna install right now. It has been stuck at the same screen for over 5 minutes now.

(And it is definitely not a network issue from my side, because I just downloaded the installer, and I can ping google.com just fine.)

Maybe on a VM?