Problem: After upgrading my Operating System to Windows 7 or Windows 10, I receive the error message: "Can't map drive: (1204) The specified network provider name is invalid." when trying to connect to a site in WebDrive.

Solution: The Windows upgrade process corrupts the WebDrive network provider (WDNP32). Reinstalling WebDrive and rebooting the computer restores the network provider and fixes the issue.