Larian Studios Forums Divinity: Original Sin 2 Divinity - Original Sin 2 - Bugs & Technical Problems Failed to create dir: \\?\\

Hello.
I bought D:OS2 DefEd last days.
Whenever i want to play it with my W10 system and my domain user (domain admin) i get the FileSystem error: Failed to create dir: \\?\\.

The Documents folder it redirected to my synology NAS.
When i start the classic edition of original sin 2, the game starts flawless. A folder is created in my redirected documents and i can configure the game.
Game starts with Divinity Original Sin 1: Enhanced Edition, too.

Only the Definitive Edition runs into the error.
When i create a local user (without folder redirection) and start D:OS2 definitive edition the game starts without problems, too.

When i start the game as domain user with redirected folders, i cannot start the game "as administrator" too. I get the same error message.

Do you have any ideas left?

Oh... Bitdefender and Antivirus Software has been deactivated to testing, too.