If you use nested data rooms and folders in DRACOON (with numerous subrooms or subfolders) in conjunction with very long names for rooms/folders/files so that the path length exceeds 260 characters, the items below them on the DRACOON drive will not be displayed in File Explorer.
For compatibility reasons, Windows only supports paths with a maximum length of 260 characters by default—even in File Explorer. If a folder hierarchy in DRACOON including filenames, for example, exceeds this value, the items located below it are not displayed in File Explorer and cannot be opened.
Starting with Windows 10 version 1609, you can use a registry value (and, alternatively, the group policy Computer Configuration > Administrative Templates > System > Filesystem > Enable Win32 long paths) to remove the path restriction to 260 characters, which makes using very long paths up to 32767 characters possible.
How to enable support for long path names in Windows 10:
You need administrator rights on your PC to make this change. Contact your system administrator if necessary.
- Download the file Allow long paths in Windows 10.reg:
- Open the downloaded file by double-clicking.
- Confirm the user account control prompt.
- Click Yes in the warning displayed by Registry Editor.
- The respective value is added to the registry.
- Restart Windows (important!).
Note that despite this change, some older programs may still be unable to open files if their path exceeds 260 characters. Also, you may not be able to rename these items in File Explorer (in this case, use the DRACOON Web App for renaming).
To avoid potential issues with long path names in general, unnecessarily long names for files, folders, and data rooms in DRACOON should not be used. Although many sublevels are supported (such as 20 subfolders or more), the individual names for rooms, folders, and files should not be excessively long.
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