KB5020387 for Windows 11 fixes connection issues

Η released an emergency update KB5020387 (Build 22000.1100) to fix a handshake failure issue in the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols.

Error leads to failure s between clients and .

Windows update

This all started with the update Patch Tuesday this month for Windows 11 and Windows 10.

Read more at changelog of the new KB5020387 OOB update that fixes the TLS/SSL handshake issue in Windows 11 21H2.

You can install the new update through Windows update but also from the Microsoft Update Catalog website.

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Windows 11

Windows 11

Written by giorgos

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