RDP issue to use TCP

Jonathan 400 Reputation points
2026-10-03T14:24:01.1233333+00:00

Hi,

To the step like

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where must "fClientDisableUDP" be created?

Windows for business | Windows Server | Networking | Network connectivity and file sharing
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2026-10-03T14:24:14.28+00:00

Create fClientDisableUDP on the client device, under this registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\Client

If the Client subkey doesn't exist, create it first under:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services

Then create:

  • Name: fClientDisableUDP
  • Type: DWORD (32-bit)
  • Value: 1

This setting corresponds to the Turn Off UDP On Client policy. When enabled, RDP uses only TCP on the client side.

Warning: editing the registry incorrectly can cause system problems. Prefer using gpedit.msc when available: Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Connection Client > Turn Off UDP On Client = Enabled

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  1. Marcin Policht 109.6K Reputation points MVP Volunteer Moderator
    2026-10-03T16:50:07.8733333+00:00

    Create the fClientDisableUDP value under HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\Client.

    If the Client key does not exist under Terminal Services, create it by right-clicking Terminal Services, selecting New > Key, and naming it Client.

    In the Client key, right-click the right-hand pane, select New > DWORD (32-bit) Value, and name the value fClientDisableUDP. Double-click it, set Value data to 1, and click OK.

    If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.

    hth

    Marcin

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