I enabled Azure Files preview.
I follow this article: http://blogs.msdn.com/b/windowsazurestorage/archive/2014/05/12/introducing-microsoft-azure-file-service.aspx
I created new storage account called loremipsum. Using powershell, I created new storage share called loremipsum-01. Called New-AzureStorageDirectory
command to test create directory. It succeeded.
I went to command prompt and called this command:
net use z: \\loremipsum.file.core.windows.net\loremipsum-01 /u:loremipsum accesskey==
Result: System error 64. Network name is undefined.
How should I connect to this share, so I can use it as mapped folder in explorer?
If I am not mistaken, you're trying to connect to Azure File Service share from your local computer. Please note that this is not possible today. You can only mount a share from the VM/Web or Worker Role running in the same region. From the blog post link above (Step 4: Use File Share):
Once your share is created, it can be accessed via the SMB or REST protocol from any Azure node (VM/Worker/Web role) hosted in the same region as the storage account hosting the share.