Cannot RDP from Windows 7 Pro to RDP Server 2019

The problem can come from a problem of encryption (CredSSP):

Error (CredSSP encryption oracle remediation) when you try to RDP to a Windows VM in Azure - Virtual Machines | Microsoft Docs 
The problem exists when a workstation not updated is trying to connect to a server updated, or the contrary.

The workaround (registry on the client) is generally the quickest way to verify and connect.

#Add the vulnerability key to allow unpatched clients
REG ADD "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\CredSSP\Parameters" /v AllowEncryptionOracle /t REG_DWORD /d 2

Our vendor found the fix that worked for us.  There is a TLS 1.2 enable patch from Microsoft, as show in the following link.

https://support.microsoft.com/en-us/help/3140245/update-to-enable-tls-1-1-and-tls-1-2-as-default-secure-protocols-in-wi

No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

Accept: 'arnold' (https:#a43299566)

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seth2740
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