Windows 10 · Release · Security update (Patch Tuesday)
October 8, 2019—KB4520011 (OS Build 10240.18368)
- Release
- Cumulative update
- KB4520011 — Microsoft's article, opens in a new tab
What's in this update
Updates to improve security when using Internet Explorer and Microsoft Edge. Updates for verifying user names and passwords. Updates for storing and managing files.
From Microsoft's release notes for KB4520011.
Microsoft's known issues — KB4520011
- Issue Known issue Certain operations, such as rename , that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, “STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)”. This occurs when you perform the operation on a CSV owner node from a process that doesn’t have administrator privilege. Workaround: Do one of the following: Perform the operation from a process that has administrator privilege. Perform the operation from a node that doesn’t have CSV ownership. Microsoft is working on a resolution and will provide an update in an upcoming release.
- Issue Known issue Updates for Windows released October 8, 2019 or later provide protections, tracked by CVE-2019-1318 , against an attack that could allow unauthorized access to information or data within TLS connections. This type of attack is known as a man-in-the-middle exploit. Windows might fail to connect to TLS clients and servers that do not support Extended Master Secret for resumption ( RFC 7627 ). Lack of RFC support might cause one or more of the following errors or logged events: "The request was aborted: Could not create SSL/TLS secure Channel" SCHANNEL event 36887 is logged in the System event log with the description, "A fatal alert was received from the remote endpoint. The TLS protocol defin Workaround: For information, see KB4528489 .
Known issues — reported on the forum
No problems reported on the forum for this build yet. Threads that name 10240.18368 or KB4520011 and describe a fault appear here automatically.
In the news
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Discussed on the forum
No member thread names 10240.18368 yet.