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Today is the last Microsoft Patch Day of the year 2020. Microsoft released security updates and non-security updates for all supported client and server versions of the company's Windows operating system, and updates for other company products such as Microsoft Office, Microsoft Edge, Internet Explorer, or the .NET Framework.
Our Patch Day overview provides you with detailed information on released patches, security issues, and related information. You can download an Excel spreadsheet of the released security updates, check out the operating system distribution, find links to all support pages, and the list of known issues here in this guide.
Check out the November 2020 Security Updates overview here in case you missed it.
Download the following Excel spreadsheet that contains the released security updates to your system. Note that Microsoft's new platform is quite slow and that it may be possible that updates are missing. Let us know in the comments if you notice anything missing: Security Updates 2020 12 Microsoft Windows
Windows Server products
Other Microsoft Products
Windows 7 SP1 and Windows Server 2008 R2
Updates and improvements:
Windows 8.1 and Windows Server 2012 R2
Updates and improvements:
Windows 10 version 1809
Updates and improvements:
Windows 10 version 1903 and 1909
Updates and improvements:
Windows 10 version 2004 and 20H2
Updates and improvements:
Other security updates
KB4592468 -- 2020-12 Security Monthly Quality Rollup for Windows Embedded 8 Standard and Windows Server 2012 (KB4592468)
KB4592497 -- 2020-12 Security Only Quality Update for Windows Embedded 8 Standard and Windows Server 2012 (KB4592497)
KB4592498 -- 2020-12 Security Monthly Quality Rollup for Windows Server 2008 (KB4592498)
KB4592504 -- 2020-12 Security Only Quality Update for Windows Server 2008 (KB4592504)
KB4592464 -- 2020-12 Cumulative Update for Windows 10 Version 1507 (KB4592464)
KB4593226 -- 2020-12 Cumulative Update for Windows Server 2016 and Windows 10 Version 1607 (KB4593226)
KB4592473 -- 2020-12 Cumulative Update for Windows 10 Version 1703 (KB4592473)
KB4592446 -- 2020-12 Cumulative Update for Windows 10 Version 1803 (KB4592446)
Servicing Stack Updates:
2020-12 Servicing Stack Update for Windows Embedded Standard 7, Windows 7, and Windows Server 2008 R2 (KB4592510)
2020-12 Servicing Stack Update for Windows Server, version 20H2, Windows 10 Version 20H2, Windows Server, version 2004, and Windows 10 Version 2004 (KB4593175)
Windows 7 SP1 and Windows Server 2008 R2
Windows 8.1 and Server 2012 R2
Windows 10 version 1809
Windows 10 version 1903 and 1909
Windows 10 version 2004 and 20H2
ADV 200013 -- Microsoft Guidance for Addressing Spoofing Vulnerability in DNS Resolver
ADV 990001 -- Latest Servicing Stack Updates
You find Office update information here.
Updates are already available via Windows Updates and other update management systems. Default Windows installations are configured to find and install updates automatically, but it is also possible to download updates manually to install them.
Tip: it is essential that you create a backup of the system before you install Windows updates as things may go wrong and backups help you restore the previous status quo.
You can check manually for updates in the following way:
Below are resource pages with direct download links, if you prefer to download the updates to install them manually.
Windows 7 and Server 2008 R2
Windows 8.1 and Windows Server 2012 R2
Windows 10 (version 1809)
Windows 10 (version 1903)
Windows 10 (version 1909)
Windows 10 (version 2004)
Windows 10 (version 20H2)
Ghacks is a technology news blog that was founded in 2005 by Martin Brinkmann. It has since then become one of the most popular tech news sites on the Internet with five authors and regular contributions from freelance writers.
No excel spreadsheet this month?
Microsoft’s new platform is very slow. Not sure if the Excel spreadsheet is complete but it took longer than usual.
Hello support, the latest windows 2012 security updates failed on couple my servers VM, please assist ASAP and if anyone else this issue please tell how to resolve
Hello support on my two domain controllers and two other Windows 2012 R2.
These both KB not able to install, its failing to install. it downloads then install, when i restart the VM windows 2012 R2, it gets to 75% then says reverting changes.
Please, help ASAP, i tried everything from fixing and attempting to manual install.
I tried everything for last two weeks nothing worked.
The remote host is missing one of the following rollup KBs :
– 4592495
– 4592484
C:\Windows\system32\gdiplus.dll has not been patched.
Remote version : 6.3.9600.19867
Should be : 6.3.9600.19880
Kerberos authentication of ticket renewals on domain controllers has been fix with Dec. CU.
Hey, everyone! It’s pre-update-system-drive-cloning-and-imaging Tuesday!
Full Disclosure: My Windows 10 system hasn’t gotten borked by an update yet, and the built-in rollback feature on my dad’s Windows 10 computer worked flawlessly when a version upgrade borked *his* Windows 10 system, but I’ve seen enough irrecoverable borkings in Windows 7 and read about enough of them in Windows 8/8.1 and 10 to stay on my guard. I used to clone before applying Patch Tuesday updates, on old laptops where swapping out drives took only around five minutes. Now I image.
I use a local account rather than a “Microsoft account” because of privacy concerns, but I have a question for Microsoft-account users who back up their settings online and who’ve had to reinstall Windows 10 from scratch: How completely were your pre-borkage system and app settings restored after the reinstall? How many hours or days did you have to put in to return your system to more or less the same state it was in before it got borked?
Thanks Martin, for guiding me thru this mounts update.
I updated main system to Windows 10 version 20H2 build 19042.685.
Any new unwanted or trickery features enabled?
that’s entirely dependant on what OS you are using
8.1 is fine, as is 7 with ESU, however, can’t speak for 10
interestingly… the windows experience thing popped up upon restarting to finish the update.. 2 options… continue.. or remind me in 3 days.
I see they’ve taken to reinstalling Edge (Chromium) for those of us who’ve uninstalled it, with the “DoNotUpdateToEdgeWithChromium” registry setting no longer working does anyone know of how to block it from installing now?
Something in the administrative templates for Edge maybe?
> My Windows 10 system hasn’t gotten borked by an update yet
What a strange thing to be concerned about with something as important as an OS
> Any new unwanted or trickery features enabled?
Would you audit it for us? Oh, wait, we can’t. We don’t have access to the source code, nor can we make reproducible builds! HA, HA!
Thanks Martin for the useful info.
For some reason, my desktop was forced to install 2004 whereas, my laptop continued with installing security updates for 1909.
Is there a way to revert back to 1909? Or is 2004 usable at the current state?
Updated LTSC 1809 on two machines. One weird new behaviour I have noticed since last moth, and this month is no differemt, is that now I always get one (1) notification about my Windows Firewall being disabled after a reboot. This used to not be the case, as the “Windows Security notification” application is not running in background. Turning off the Windows Defender Firewall service “mpssvc” also did not fix this issue – unless Microsoft considers this to be the indended behaviour.
Notifications are disabled alltogether on my machine, so this bypasses (almost) anything user-facing. I did not dig deep wnough into Group Policy, yet.
1 weird thing i noticed. not sure if it’s an update to the calendar app or if it’s the monthly update… but all the events have disappeared from calendar (i use local account only)… but they do (or at least 1 did.. i don’t have many events) pop up on the notification area.
don’t remember seeing this before..
Again a security update causes problems. Most of my url’s don’t work now. None work from my gmail account and many from my Chrome Browser Bookmarks. I’ve tried to find work arounds to no avail. This is one of the few links that works.
Hello support on my two domain controllers and two other Windows 2012 R2.
These both KB not able to install, its failing to install. it downloads then install, when i restart the VM windows 2012 R2, it gets to 75% then says reverting changes.
Please, help ASAP, i tried everything from fixing and attempting to manual install.
I tried everything for last two weeks nothing worked.
The remote host is missing one of the following rollup KBs :
– 4592495
– 4592484
C:\Windows\system32\gdiplus.dll has not been patched.
Remote version : 6.3.9600.19867
Should be : 6.3.9600.19880
Hello Support, please update me ASAP.
Hello support on my two domain controllers and two other Windows 2012 R2.
These both KB not able to install, its failing to install. it downloads then install, when i restart the VM windows 2012 R2, it gets to 75% then says reverting changes.
Please, help ASAP, i tried everything from fixing and attempting to manual install.
I tried everything for last two weeks nothing worked.
The remote host is missing one of the following rollup KBs :
– 4592495
– 4592484
C:\Windows\system32\gdiplus.dll has not been patched.
Remote version : 6.3.9600.19867
Should be : 6.3.9600.19880
Hello Support, please update me ASAP.
Hello support on my two domain controllers and two other Windows 2012 R2.
These both KB not able to install, its failing to install. it downloads then install, when i restart the VM windows 2012 R2, it gets to 75% then says reverting changes.
Please, help ASAP, i tried everything from fixing and attempting to manual install.
I tried everything for last two weeks nothing worked.
The remote host is missing one of the following rollup KBs :
– 4592495
– 4592484
C:\Windows\system32\gdiplus.dll has not been patched.
Remote version : 6.3.9600.19867
Should be : 6.3.9600.19880