Due to changes made by Microsoft in newer versions of Windows 10 and Windows Server 2019 a user may be required to authenticate first-factor twice (once from the RDP client and once at the Windows login screen) before receiving the VIP security code prompt.
VIP Integrations : MCP: Windows
A hotfix for the Microsoft Credential Provider (MCP) integration has been released to resolve this issue. The updated DLL file can be downloaded below.
If the issue persists, an administrator can edit the
HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\CP\Options system registry entry. Ensure that for
Value Data is set to 0.
Value Name: RDPShowConsole
Value Data: 0