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Error ID 36874 The TLS connection request has failed how to find out the source of the error

adil 1,206 Reputation points
2024-02-18T08:46:31.91+00:00

Hi, I have 2 APP & 2 WEB SharePoint 2019 Servers and only Enabled TLS 1.2 and enabled only AES 128/128 & AES 256/256 ciphers I observed below errors in all 4 Servers not frequently but every 2 days some times after 4 days in some times early hours and late hours when no body access SharePoint here how can i find out which source/ request causing this error An TLS 1.2 connection request was received from a remote client application, but none of the cipher suites supported by the client application are supported by the server. The TLS connection request has failed.

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A family of Microsoft on-premises document management and storage systems.
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A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
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SharePoint Server: A family of Microsoft on-premises document management and storage systems.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Ling Zhou_MSFT 13,905 Reputation points Microsoft Vendor
    2024-02-19T05:14:52.7766667+00:00

    Hi @adil, Thank you for posting in this community.

    Based on the description of your problem, and after reviewing the information, the reason for your problem is probably because the TLS encryption is not enabled on your server. This may cause an issue connecting applications via HTTPS, and TLS encryption fails on the connections.

    Since we are not sure what version of Windows you are using, we recommend that you find out how to enable TLS 1.2 based on your version of Windows. Restart your IIS service when you are done.

    There is also information about managing and troubleshooting TLS, you can refer to this article (Transport Layer Security (TLS) registry settings) to see if it helps.

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

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