Summary
This update includes improvements for the following:
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It addresses an issue that might affect some types of Secure Sockets Layer (SSL) and Transport Layer Security (TLS) connections. These connections might have handshake failures. For developers, the affected connections are likely to receive one or more records followed by a partial record with a size of less than 5 bytes within a single input buffer. If the connection fails, your app will receive the error, “SEC_E_ILLEGAL_MESSAGE”.
Known issues in this update
We are currently not aware of any issues with this update.
How to get this update
Get the update
|
Release Channel |
Available |
Next Step |
|
Windows Update and Microsoft Update |
No |
See the other options below. |
|
Microsoft Update Catalog |
Yes |
To get the standalone package for this update, go to the Microsoft Update Catalog website. |
|
Windows Server Update Services (WSUS) and Microsoft Endpoint Configuration Manager |
No |
You can manually import these updates into Windows Server Update Services (WSUS) or Microsoft Endpoint Configuration Manager. For WSUS instructions, see WSUS and the Catalog Site. For Configuration Manger instructions, see Import updates from the Microsoft Update Catalog. |
Prerequisites
To install Windows 8.1 or Windows Server 2012 R2 updates, we recommend that you have installed the latest SSU update for Windows 8.1 or Windows Server 2012 R2. For more information, see ADV990001 | Latest Servicing Stack Updates.
File information
For a list of the files that are provided in this update, download the file information for update KB5020447.
References
Learn about the standard terminology that is used to describe Microsoft software updates.
