Kamis, 02 November 2023

Windows 11 22H2 Issue to connect legacy SQL Servers

We've got a legacy SQL Server (MS SQL 2005) running in our environment, and everything was fine until one of our user use Windows 11 with latest update (22H2).

A connection was successfully established with the server, but then an error occurred during the login process. (provider: SSL Provider, error: 0 - An existing connection was forcibly closed by the remote host.) (Microsoft SQL Server, Error: 10054)

The answer most likely is updating my Cipher Suite, Windows 22H2 changed the default TLS Cipher Suites. The following were removed from the default "TLS_DHE_RSA_WITH_AES_256_GCM_SHA384,TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_3DES_EDE_CBC_SHA" per article https://learn.microsoft.com/en-us/windows/win32/secauthn/tls-cipher-suites-in-windows-11

I ran into the same issue, so I just updated the SSL Cipher Suite per instructions https://support.microsoft.com/en-us/topic/update-to-add-new-cipher-suites-to-internet-explorer-and-microsoft-edge-in-windows-548427db-ed06-5521-fe8b-d525ab573022follow these steps:

  1. At a command prompt, enter gpedit.msc, and then press Enter. The Local Group Policy Editor is displayed.

  2. Go to Computer Configuration > Administrative Templates Network > SSL Configuration Settings.

  3. Under SSL Configuration Settings, select SSL Cipher Suite Order.

  4. In the SSL Cipher Suite Order pane, scroll to the bottom.

  5. Follow the instructions that are labeled How to modify this setting.

  6. Restart your windows to apply config.

The list I used was the one that was used for Windows prior to the 22H2 (22621.819) update.


Disclaimer: Please be advised that this response is to answer the question that was given and obviously does not follow best practice procedures. Microsoft disabled this encryption for a reason. If you are like me and have older servers that need to keep running while you come up with a long-term solution to discontinue them then the above solution will keep you operational.

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