Can't access to IX2-2 after update

[mauriziot]

Yesterday I've updated my NAS IX2-2 (it's the same of IX2-200?) from 4.0.2.xxx to 4.1.108.32627 firmware version.
But now when I try to access to a NAS folder by Windows, the NAS ask me a password.
After the upgrade I've set an Admin account for the NAS (like the NAS asked) but I think that it's only for the management by web-access.
Everyone have the right to access and edit the folder (I attach the screen of the authorization).
What can I do? I want no password to access to the NAS, like before the upgrade.
I'm sorry for my English