Folder not synced on Windows with illegal folder name

[xbelt]

When creating a folder in Nextcloud with an ampersand (or any other illegal folder name in windows), the sync client cannot synchronize the folder

Expected behaviour

The folder should be synchronized - possibly by removing illegal characters.

Actual behaviour

The folder is not synched and no error message is displayed.

Steps to reproduce

1. Create a folder in the webbrowser called "Test&Test"
2. Force sync from the client

Client configuration

Client version: 2.6.4stable-Windowsx64

Operating system: Windows 10

OS language: german

Installation path of client: not relevant

Server configuration

Nextcloud version:17.0.1

Storage backend (external storage):

[alexanderdd]

can confirm & reproduce. This is also true for files. maybe rename this issue to "files/folders with special characters (* : etc) not synced to Windows, no warning "

Seems very severe to me because there is not even a warning. Is there a tag to show that this is a severe issue?

For reference: Nextcloud allows to create files/folders with special characters that are not allowed in Windows. These are not allowed in Windows:

 < (less than)
 > (greater than)
 : (colon - sometimes works, but is actually NTFS Alternate Data Streams)
 " (double quote)
 / (forward slash)
 \ (backslash)
 | (vertical bar or pipe)
 ? (question mark)
 * (asterisk)

Option 1: Nextcloud only allows file and folder names that also work in Windows (should I repost this in server github?)
Option 2: The client warns about every file/folder that cannot be synced due to special characters, and offers a button "rename automatically" that replaces these characters by "-" so that sync can be completed.

[claell]

This seems to be a duplicate of #464. Please confirm and close this issue if that is the case. Discussion can continued in the original issue then.

[alexanderdd]

@xbelt see message above?

I think its a duplicate, but I can't close this

[er-vin]

Duplicate of #464