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Some Windows 10 users have had a problem with Microsoft’s latest cumulative updates for the operating system, in particular KB4494441, a major update (on this subject later) for those running the October 2018 update.
The problem here, as pointed out by Reddit people, is that KB4494441 is installed, then Windows 10 reinstalls the update. The update history then indicates that two updates KB4494441 are installed, the second having a number two in brackets at the end – KB4494441 (2).
Although this does not seem to create adversity and the update always works well, as reported by those experiencing the problem, it is not surprising that this has led to some confusion about what exactly is happening with the duplicate installation.
Microsoft has stated that it is working on a solution to prevent this type of problem from occurring. This correction can be an updated version of the update or an update of the service stack.
KB4494441 is an important update.
Users should not attempt to uninstall this update, even if it is listed twice, as it contains many bug fixes and security updates, including one for the recently announced vulnerabilities of Microarchitectural Data Sampling (MDS).
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New speculative MDS execution vulnerabilities called ZombieLoad, RIDL and Fallout could allow malicious processes to steal information from CPU buffers that they would not normally have access to. This could allow them to steal encryption keys, passwords or other sensitive information.
Therefore, it is important that this update remains installed as it contains mitigations to prevent these attacks.
To check that your PC has been properly updated, open Settings > About and check the build number. The May 2019 patch for the October 2018 updates extends the systems to Windows 10 Build 17763.503.
It should also be noted that you will not have any problems if the update is installed twice.
As mentioned earlier, Microsoft has already identified the problem and will soon provide more details.
May 2019 Tuesday amendments to updates
Version 1809 of the Tuesday Patch Rollout for Windows 10 of May 2019 contains important security fixes and also allows Retpoline to improve system performance on older PCs.
Windows 10 Update KB4494441 for version 1809
Microsoft has announced KB4494441 on the Windows Support page, and it is “May 14, 2019-KB4494441 (OS Build 17763.503)”. If you are already running the Windows update October 10, 2018 on your device, this update fixes these problems:
- Enables Retpoline by default if the Spectrum 2 variable (CVE-2017-5715) is enabled.
- Provides protection against a new subclass of speculative page channel execution vulnerabilities called microarchitectural data sampling for 64-bit (x64) Windows versions (CVE-2018-11091, CVE-2018-12126, CVE-2018-12127 and CVE-2018-12130).
- Adds “uk.gov” to the HTTP Strict Transport Security Top Level Domains (HSTS TLD) for Internet Explorer and Microsoft Edge.
- Fix a problem that could cause a “1309 Error” when installing or uninstalling certain types of.msi and.msp files on a virtual drive.
- Fix a problem that prevents Microsoft Visual Studio Simulator from starting.
- Fix a problem that causes zone transfers between primary and secondary DNS servers to fail using TCP (Transmission Control Protocol).
- Fix a problem that causes the SNMP (Simple Network Management Protocol) Management Information Base registry to fail when the Windows Management Instrumentation (WMI) provider uses the Windows tool SMI2SMIR.exe.
- Fixes a problem that may reduce or enlarge the size of the text, layout or cell compared to the MS UI Gothic or MS PGothic fonts that Microsoft Excel expects when you use.
- Security updates for Microsoft Edge, Internet Explorer, Microsoft Scripting Engine, Windows App Platform and Frameworks, Windows Graphics, Windows Storage and Filesystems, Windows Cryptography, Microsoft JET Database Engine, Windows Kernel, Windows Virtualization and Windows Server.
https://support.microsoft.com/en-us/help/4494441/windows-10-update-kb4494441
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