Windows – How to create anonymous share on Windows 10

Since I can't comment on PilotBobs answer:

This is by design and doesn't pose a security risk, as I understand the feature.

There is a technet article which describes how this thing works:

When any folder or file within a user’s profile is shared, the Windows sharing engine creates a single share to facilitate sharing out that content. This helps facilitates several sharing scenarios. It facilitates scenarios which allow the sharing of individual files while also reducing the management overhead for creating and maintaining multiple shares on the computer. It also allows standard users on that same computer to share their own content without the need to create additional shares, which requires UAC elevation.

Additionally, both Windows Vista and Windows 7 use a Server Message Block (SMB) feature called Access-based Enumeration to limit what content is shown to others when they access this share. With the Access-based Enumeration feature enabled, users accessing the share are only shown the content they have access to over SMB and everything else is hidden from them.

I find this feature actually very nice because you can share single files and, in addition, you keep the folder structure.

To explain the problem :

On Window 8.1, and presumably Windows 8, when using a Microsoft account to login to Windows, the default user-name when you make a network connection is MicrosoftAccount\<live_id_username>, instead of the login <computer_name>\<username> as in previous versions of Windows.

This MicrosoftAccount form is likely to cause a login failure on any server that is not using a Microsoft account, due to the strict way that Microsoft/Local accounts are implemented in Windows 8/8.1.

I have not been able to find a way of forcing Windows 8/8.1 to use the old format of computer-name\user-name, unless with one of the workarounds you have listed in your post. Probably this problem needs to be addressed by Microsoft itself.

I have tested and this is still true in Windows 10, so don't expect any improvement. Unfortunately, this is just the way that Microsoft/Local accounts were implemented.