"It does not work" doesn't give people anything to go on.

I set up a shared folder in Windows 8.1 Preview and tried to access it from Ubuntu 13.04, but I couldn't get past the password prompt. (Win 8.1 told me the password to use, no joy.)

Using Win 8.1 to access a share in Mint 13 worked the first time. I have never edited a configuration file or used the command line for anything share-related.