At face value, 0x3 suggests Windows cannot locate a specified network path. In RDP, this is a wrapper indicating that the connection setup process failed before the session could initialize—not necessarily a missing file share, but a missing logical path to the Remote Desktop Session Host.
The Remote Desktop error code 0x3 and extended error code 0x12 typically occur when a user tries to connect to a remote computer using Remote Desktop Connection (RDC). The error message may appear as "The remote computer disconnected. The error code is 0x3 and the extended error code is 0x12." remote desktop error code 0x3 extended error code 0x12
Critically, the error surfaces even when the host appears pingable. The failure occurs at the , where the client needs to: At face value, 0x3 suggests Windows cannot locate
This is the true diagnostic. Microsoft’s RDP stack defines 0x12 as a failure in either: The error message may appear as "The remote
From the client, run: