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Commit86c2977

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docs: warn about RDP over UDP with Coder Desktop (#18354)
Warns about UDP incompatibility for Coder Connect and RDP over UDP; explains how to disable.Fixescoder/internal#608[preview](https://coder.com/docs/@spike%2Finternal-608-rdp-udp-docs/user-guides/workspace-access/remote-desktops#coder-desktop-beta)
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‎docs/user-guides/workspace-access/remote-desktops.md

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@@ -47,9 +47,30 @@ Or use your favorite RDP client to connect to `localhost:3399`.
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The default username is`Administrator` and password is`coderRDP!`.
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###Coder Desktop URI Handling (Beta)
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###RDP with Coder Desktop (Beta)
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[Coder Desktop](../desktop/index.md)'s Coder Connect feature creates a connection to your workspaces in the background.
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There is no need for port forwarding when it is enabled.
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Use your favorite RDP client to connect to`<workspace-name>.coder` instead of`localhost:3399`.
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>[!NOTE]
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>Some versions of Windows, including Windows Server 2022, do not communicate correctly over UDP
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>when using Coder Connect because they do not respect the maximum transmission unit (MTU) of the link.
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>When this happens the RDP client will appear to connect, but displays a blank screen.
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>
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>To avoid this error, Coder's[Windows RDP](https://registry.coder.com/modules/windows-rdp) module
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>[disables RDP over UDP automatically](https://github.com/coder/registry/blob/b58bfebcf3bcdcde4f06a183f92eb3e01842d270/registry/coder/modules/windows-rdp/powershell-installation-script.tftpl#L22).
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>
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>To disable RDP over UDP, run the following in PowerShell:
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>
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>```powershell
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> New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services' -Name "SelectTransport" -Value 1 -PropertyType DWORD -Force
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> Restart-Service -Name "TermService" -Force
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> ```
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You can also use a URI handler to directly launch an RDP session.
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[Coder Desktop](../desktop) can use a URI handler to directly launch an RDP session without setting up port-forwarding.
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The URI format is:
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```text
@@ -81,7 +102,7 @@ resource "coder_app" "rdp-coder-desktop" {
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##RDP Web
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Our[WebRDP](https://registry.coder.com/modules/windows-rdp) module in the Coder
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Our[Windows RDP](https://registry.coder.com/modules/windows-rdp) module in the Coder
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Registry adds a one-click button to open an RDP session in the browser. This
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requires just a few lines of Terraform in your template, see the documentation
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on our registry for setup.

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