windows10 ask login and pass for my samba share

[bellaton]

i hope you can help me with a problem i can't solve for a month.

on my pc, i have windows 10. And i installed a virtual machine with virtualbox.the system of my vm is debian 7.5

before to install windows10,i was on windows 7 and i had no problem.

since windows10, my samba share ask me login and password and i cant' find out why? i try many things but it no effect.

is there an option to active on windows or something else?. thank you very much.
In attached files, the dialog box which showing what i say

 

[Trouble]

It's seems to be a typical prompt for credentials to access the shared resource on a host machine.
You'll need to include the machine name in the top box of the prompt as in
MachineName\UserName
Password
So if the hosting server is named MyServer and there is a User on MyServer with appropriate credentials to access the resource named MyUser and his password is P@$$w0rd then it would look something like

MyServer\MyUser
P@$$w0rd