SEC_E_ILLEGAL_MESSAGE

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Microsoft releases out-of-band KB5020387 update to fix TLS handshake issues in Windows 11

It may be the middle of the month, but that hasn't stopped Microsoft releasing an important update for various versions of Windows, including the KB5020387 update for Windows 11.

The updates fix a TLS handshake issue that causes SEC_E_ILLEGAL_MESSAGE errors. In all, there are seven non-security updates available for Windows, Windows 8.1, Windows 10, Windows 11, Windows Server 2012 and Windows Server 2022.

By Sofia Elizabella Wyciślik-Wilson -

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