You are running a 32-bit application on a computer that is running a 64-bit version of Windows Vista. The application uses the NetBIOS API to communicate over the network. In this Windows on Windows 64 (WOW64) environment, the 32-bit application can open a connection, and it can send data. However, the application cannot use the NetBIOS API to receive data.

For example, the 32-bit application successfully makes an NCBSEND command call. However, the NCBRECVANY command cannot receive data correctly.

Note: This problem does not occur in the following scenarios:

• You run the 32-bit application in a 32-bit version of Windows Vista.
• You compile code for the 32-bit application into a 64-bit application. Then, you run the 64-bit application in the 64-bit version of Windows Vista.

When you try to connect to a Web folder by using a network basic input/output system (NetBIOS) name on a computer that is running Windows Vista, you are prompted for the user name and the password.

This issue occurs even though the “Automatic logon with current user name and password” security option is set for the fully qualified domain name (FQDN) of the Web folder in the “Trusted Sites” zone and in the “Local intranet” zone.

For example, this issue occurs when you use one of the following NetBIOS names to connect to the Web folder:

• http://server_name/webdav
• http://server_name.company_name.com/webdav

Note You do not experience this issue in Microsoft Windows XP.