Add Registry

I have never done this before and don't want to "break" something.   We want to disable UDP and I found a post that says:

Add new registry:   This is on a server 2012, to stop UPD and force TCP on thin clients

"HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\Client"  /v "fClentDisableUdp" /d 1 /t REG_DWORD

Please see attached screenshot.

And then how to I deliver this change to all machines using group policy
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There is missing letter i in "fClientDisableUdp"

You can use this instructions to do what you want, but I would start with OU with just one or two computers to test things first:
bankwestCTO/CashierAuthor Commented:
On my screen shot I had another question.   Please?  

Thanks for the info.
David Johnson, CD, MVPOwnerCommented:
use both one for x86 machines and one for x64 machines
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Sorry, I have miss-looked that one.
Hexadecimal 1 or decimal 1 is the same value, so it does not matter. Normally I use decimal number if it is not specified differently (or value uses a to f letters). It has nothing to do with 64 bit.
1=1, 2=2,...9=9, 10=a, 11=b, 12=c,... 15=f
Official way is to make such change with group policy.
Maidine FouadEngineerCommented:
Another way :

When you change a simple Value in the registry , you can Export it to a file that has a "reg" Extension.

Then you can create a GPO and link it to the OU you have for every user in the domain.

TO do that go User Configuration -> Windows-Settings -> Scripts (Logon/Logoff)

Under the Logon UI : Drop your File( registry value you exported)there and add /s as a parameter, so it can run silently , and with the gpo we set on every user.
It is instrumented in GPO (and user login script cannot modify HKLM):
Computer Configuration\Administrative Templates\Windows Components\Remote Desktop Services\Remote Desktop Session Host\Connections\Select RDP Transport Protocols - choose TCP only.

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Windows Server 2012

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