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Win10 KB4523786 – Uninstall It

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Cumulative update for Autopilot in Windows 10 version 1903: October 22, 2019 was erroneously offered to all 1903 PC’s.
The folks over at AskWoody have been all over this:
First “The Patch Lady” wondered, “On a standalone PC that’s never seen Windows autopilot I am getting KB4523786 pushed out if I click on check for updates. And I have never installed autopilot here. (proving once again NEVER ever click on check for updates).”
Speculation and answers came in the comments on that post.
The following day a Microsoft Employee posted this: “A Windows Autopilot update, which was targeted as part of the out of box experience for new devices, was incorrectly offered to customers running Windows Home edition during regular scheduled Windows update scan. Once we became aware of the issue, we stopped distribution of the update. No action is required on your part.”
That is bullsquat. If you’re on 1903 and you checked for updates on Patch Tuesday then Microsoft installed or altered 90-ish files on your PC. Uninstall it.
Control Panel > Add Remove Programs > View Installed Updates > find KB4523786 and double-click it.
or you can run this from an Admin Command Prompt:
wusa.exe /kb:4523786 /uninstall /quiet /norestart
See: Microsoft pushes, then yanks, rogue kinda-security patch KB 4523786, ostensibly for Autopilot

Patch Tuesday

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Windows 10
1903 – October 8, 2019—KB4517389 (OS Build 18362.418)
1809 – October 8, 2019—KB4519338 (OS Build 17763.805)
Highlights
Updates to improve security when using Internet Explorer and Microsoft Edge.
Updates for verifying user names and passwords.
Updates for storing and managing files.

Improvements and fixes
This security update includes quality improvements. Key changes include:
Addresses an issue in security bulletin CVE-2019-1318 that may cause client or server computers that don’t support Extended Master Secret (EMS) RFC 7627 to have increased connection latency and CPU utilization. This issue occurs while performing full Transport Layer Security (TLS) handshakes from devices that don’t support EMS, especially on servers. EMS support has been available for all the supported versions of Windows since calendar year 2015 and is being incrementally enforced by the installation of the October 8, 2019 and later monthly updates.
Addresses an issue with applications and printer drivers that utilize the Windows JavaScript engine (jscript.dll) for processing print jobs.
Security updates to Windows Shell, Internet Explorer, Microsoft Edge, Windows App Platform and Frameworks, Windows Cryptography, Windows Authentication, Windows Storage and Filesystems, Windows Kernel, Microsoft Scripting Engine, and Windows Server.

Windows 8.1
October 8, 2019—KB4520005 (Monthly Rollup)
This security update includes improvements and fixes that were a part of update KB4516041 (released September 24, 2019) and addresses the following issues:
Addresses an issue with applications and printer drivers that utilize the Windows JavaScript engine (jscript.dll) for processing print jobs.
Security updates to Windows Cryptography, Windows Authentication, Windows Kernel, Windows Storage and Filesystems, Microsoft JET Database Engine, Internet Information Services, the Microsoft Scripting Engine, and Windows Server.

October 8, 2019—KB4519990 (Security-only update)
This security update includes quality improvements. Key changes include:
Security updates to Windows Cryptography, Windows Authentication, Windows Kernel, Windows Storage and Filesystems, Microsoft JET Database Engine, Internet Information Services, and Windows Server.

Windows 7
October 8, 2019—KB4519976 (Monthly Rollup)
This security update includes improvements and fixes that were a part of update KB4516048 (released September 24, 2019) and addresses the following issues:
Addresses an issue that may fail to disable VBScript in Internet Explorer by default after installing KB4507437 (Preview of Monthly Rollup) or KB4511872 (Internet Explorer Cumulative Update) and later.
Addresses an issue with applications and printer drivers that utilize the Windows JavaScript engine (jscript.dll) for processing print jobs.
Security updates to Windows Authentication, Microsoft JET Database Engine, Windows Kernel, Internet Information Services, the Microsoft Scripting Engine, and Windows Server.

October 8, 2019—KB4520003 (Security-only update)
This security update includes quality improvements. Key changes include:
Addresses an issue in security bulletin CVE-2019-1318 that may cause client or server computers that don’t support Extended Master Secret (EMS) RFC 7627 to have increased connection latency and CPU utilization. This issue occurs while performing full Transport Layer Security (TLS) handshakes from devices that don’t support EMS, especially on servers. EMS support has been available for all the supported versions of Windows since calendar year 2015 and is being incrementally enforced by the installation of the October 8, 2019 and later monthly updates.
Security updates to Windows Authentication, Microsoft JET Database Engine, Windows Kernel, Internet Information Services, and Windows Server.

Patch Tuesday

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Windows Updates

Windows 10
Provides protections against a new subclass of speculative execution side-channel vulnerabilities.
Addresses an issue that causes high CPU usage from SearchUI.exe for a small number of users. This issue only occurs on devices that have disabled searching the web using Windows Desktop Search. (1903 only)
Security updates galore.

1903 – September 10, 2019—KB4515384 (OS Build 18362.356) ***This fixes the Bad Win10 1903 Update aka Search UI issue. I checked it myself and the issue is now gone.
1809 – September 10, 2019—KB4512578 (OS Build 17763.737)
1803 – September 10, 2019—KB4516058 (OS Build 17134.1006)
1709 – EOL, time to update to 1809 or 1903

Windows 8.1
Provides protections against a new subclass of speculative execution side-channel vulnerabilities… and a host of Security updates.
September 10, 2019—KB4516064 (Security-only update)
September 10, 2019—KB4516067 (Monthly Rollup)

Windows 7
Provides protections against a new subclass of speculative execution side-channel vulnerabilities… and a host of Security updates.
September 10, 2019—KB4516033 (Security-only update)
September 10, 2019—KB4516065 (Monthly Rollup)

Software Updates:

O&O ShutUp10 1.6.1403
NEW: Chinese (simplified) language integrated
NEW: Search field in task bar can be deactivated (from Windows 10 1903)
FIX***: Deactivating the Bing search is only recommended reservedly, as there are currently problems with Windows search under Windows 10 1903
FIX: The wording in the English version was changed from passive to active to make it clearer
Available in English, German, French, Italian, Spanish, Russian and Chinese (simplified)
***The fix about Bing is the Bad Win10 1903 Update that was fixed today with today’s Win10 1903 update (see above). So, kinda pointless?
Download | Home Page | Changelog

Nvidia Geforce Game Ready WHQL Driver 436.30
“Provides increased performance and the optimal gaming experience for the Call of Duty: Modern Warfare PC Open Beta, Gears 5, and Borderlands 3”
Download | Release Notes

Bad Win10 1903 Update

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There are reports around the web that the latest update for Win10 1903 is causing Cortana to have abnormally high CPU usage:
August 30, 2019—KB4512941 (OS Build 18362.329) is the update in question.
Solutions and “workarounds” include registry editing and deleting of files. IMHO this is utter folly. The solution is this:
1 – Uninstall KB4512941.
2 – Pause updates for a month or so.
(Settings > Windows Update > Advanced Options > Pause Updates > Pause until > max time)
3 – Wait for Microsoft to fix it.
If you’ve not installed KB4512941 yet then just do steps 2 & 3.
If you are using Windows 10 Home. I’ve repeatedly said to upgrade to Pro. IT IS CHEAP