Steps to Fix RDP connection error “CredSSP encryption Oracle remediation”

If you are trying to connect to your server, and if you are connecting from is not patched to the latest level, you may receive the following error.

RDP connection error “CredSSP encryption Oracle remediation”
There are different ways to fix this error:

Method 1: CMD OR COMMAND LINE AS ADMIN

You can launch the following from an elevated (administrator-launched) CMD or command line:

REG ADD HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\CredSSP\Parameters\ /v AllowEncryptionOracle /t REG_DWORD /d 2

Method 2: Regedit

Run “regedit.exe” and go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\CredSSP\Parameters

There, add a DWORD value “AllowEncryptionOracle” and set it to 2.

Method 3: Local group policy editor

Run the command “gpedit.msc”. There, go to

Local Computer Policy\Computer Configuration\Administrative Templates\System\Credentials Delegation

 

 

Double-click the line “Encryption Oracle Remediation”. Set it to Enabled with Protection Level = “Mitigated”:

 

 
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