How to Fix CredSSP Encryption Oracle Remediation (Updated 2021)

CredSSP encryption oracle remediation occurs when one tries to connect to a computer that does not have the CredSSP encryption oracle redemption error update. Remote desktop CredSSP encryption oracle remediation error is due to a swap in Microsoft rolled out in their May 2018 Windows updates. This requires that both the client machine and your server have the latest updates.

In Windows 10, users are allowed to establish a remote desktop protocol with another Windows system so that they can remotely control the system. This can be done through CredSSP. The Windows 10 users are seeing this could be due to CredSSP encryption oracle remediation error due to sensitivity that allows the attacker to become the mediator between connections of the user and exploit their details.

CredSSP issue occurs in Windows 10, Windows Server 2016, and Windows Server 2012. The issue occurs due to CredSSP Patch that is installed in the client’s PC or server. RDP uses Credssp which is a key authentication provider that handles requests of authentication for applications.

To resolve this issue, it is recommended to download the CredSSP patch for remote code execution vulnerability. Once both computers have the Credssp patch installed, the error message will disappear. Due to some reasons you are not able to install the security update on the server or client computer, you can use the following solutions to fix the issue and get rid of the message.

You can download CredSSP patch to fix the error, Just download and install it > Click “Yes”.

Microsoft provides a policy to control adaptability with endangered clients and servers. This policy will help you set the protection level that you want for the encryption oracle vulnerability.

The details might include key information of the user and may allow the attacker to install files, have administration access to the system and could display the message.

The latest update has fixed the CredSSP error still many users are facing CredSSP encryption oracle remediation error when using RDP connections with other systems. The reason behind this is either the home system has not updated to the latest version or the system that the user intends to connect is not fully updated. This causes the RDP connection to fail and gives CredSSP RDP error to the user – “An authentication error has occurred” or “This could be due to CredSSP encryption oracle remediation”.

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Two methods to fix this error:

  1. Press WIN + R keys at the same time to launch the RUN dialog box. Type gpedit.msc and press enter. It will open the group policy editor
  2. Then go to computer configuration – administrative templates- system- credential delegation
  3.  Look at the following option on the right side of the panel – encryption oracle remediation. This option is set to Non – configured by default, Double click on the option and set it to – Enabled. Click “vulnerable” from the “protection level” drop-down box.

Now click on the apply button and then the OK button to exit. Restart your computer to take effect.  Now you will be able to establish a remote connection between server and client without any issue.

Way No. 2: Using registry editor (regedit.exe)

You can fix this error by using CredSSP registry fix. If you are using home edition of Windows, you will be able to run gpedit.msc command because this edition does not come with group editor. In case you do not want to use a group policy editor you can take the help of a registry editor for the same work.

 Follow the below steps:

  1. Press WIN + R both keys at the same time to launch the RUN dialog box. Type Regedit and press enter. It will open the registry editor
  2. Now go to the following key –

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System

  3. Create a new key under the CredSSP key and name it Parameters
  4. Select Parameters key create a new DWORD on right side pane- Allow encryption oracle and adjust the value to 2 and restart the computer to avail effect.

Now you will be able to use a Remote connection between server and client without any issue.