December Security Update Downloads - Microsoft

Microsoft released the December security updates for a diverse set of operating systems. These would include the security updates and monthly rollup updates. The patched operating systems included Windows 10, Windows 11, and Windows Server products. Below, we have compiled a list of various security updates that have been released in December. Download links for these security updates and monthly rollup updates have been posted below for a ready reference. This should save you some time in looking for the most appropriate patch for your operating system.

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Windows 10 version 1607 – KB5008207

KB5008207 is available for 32 bit and 64-bit processors. It is applicable to Windows 10 version 1607. The download links for the KB5008207 are given below:

Download for x86 or 32 bit processors – KB5008207 for Windows 10 version 1607 is on this page. The update file weighs around 900 MB.
Download for x64 or 64 bit processors – KB5008207 for Windows 10 version 1607 is on this page. The update weighs around 1692 MB.

Windows Server 2016 – KB5008207

KB5008207 security update for the Windows Server 2016 is available for download as per the details below,

Download for 64 bit processors – KB5008207 for Windows Server 2016 64 bit processors can be downloaded from this page. The update file weighs around 1692 MB. Reboot may be required after the update to complete the process.

You can read about the security update KB5008207 for Windows Server 2016 in great detail on this page.

Windows 10 version 2004 – KB5008212

The security update KB5008212 is available for Windows 10 version 2004. The download links are given below. A reboot may be needed to complete the update process.

Download KB5008212 for Windows 10 version 2004 – 32 bit processors – KB5008212 can be downloaded from this page. The update weighs around 303.8 MB.
Download KB5008212 for Windows 10 version 2004 – ARM64 processors – KB5008212 can be downloaded from this page. The update weighs around 678.9 MB.

Both updates may require a reboot on the Windows 10 based computers to complete the update process.

Windows 10 version 20H2 – KB5008212

Security update KB5008212 for Windows 10 version 20H2 can be downloaded from the links below:

Download KB5008212 for Windows 10 version 20H2 – 32 bit processor – Download KB5008217 from this page. The update weighs 303.8 MB in size. Reboot will be needed to complete the update process.
Download KB5008212 for Windows 10 version 20H2 – 64 bit processor ARM64 – Download KB5008217 from this page. This patch weighs 678.9 MB. Reboot will be needed to complete the update process.

Windows 10 version 21H1 – KB5008212

Security update KB5008212 for Windows 10 version 21H1 is available for the x86 and ARM64 processors. The download links for the Windows 10 version 21H1 are given below.

Download KB5008212 for Windows 10 version 21H1 for 32 bit processors from this page. This update weighs 303.8 MB and a reboot may be needed to complete the process.
Download KB5008212 for Windows 10 version 21H1 for 64 bit ARM64 processors from this page. This update weighs 678.9 MB and a reboot may be needed to complete the update process.
Download KB5008212 for Windows 10 version 21H1 for x64 processors or 64 bit processors from this page. This update weighs 649.4 MB and may require a reboot to complete the update process.

Windows 10 version 21H2 – KB5008212

Security update KB5008212 for Windows 10 version 21H2 was released on 14th December. You can download the files for the Windows 10 version 21H2 cumulative update KB5008212 from the links given below.

Download KB5008212 for Windows 10 version 21H2 for 32 bit processors from this page. This update weighs 303.8 MB and a reboot may be needed to complete the processing of updating Windows 10 version 21H2.
Download KB5008212 for Windows 10 version 21H2 for ARM64 processors from this page. This update weighs 678.9 MB and a reboot will be needed to complete the process.
Download KB5008212 for Windows 10 version 21H2 for x64 64 bit processors from this page. This update weighs 649.4 MB and a reboot may be needed to complete the process.

Windows version 21H2 update KB5008212 is available for x86 (32 bit processors), ARM64 (64 bit processors) and x64 (64 bit processors). All the links for downloading the corresponding security updates have been posted for ready reference.

Windows 10 version 1809 – KB5008218

KB5008218 security update for Windows 10 version 1809 was released on 14th December 2021. The update has been released for x64, ARM64, and x86 architectures. You can download the update files for Windows 10 version 1809 security update KB5008218 from the below mentioned links.

KB5008218 for Windows 10 version 1809 for x86 or 32 bit processors can be downloaded from this page. This update weighs 305.5 MB.
KB5008218 for Windows 10 version 1809 for ARM64 64 bit processors can be downloaded from this page. This update weighs 603.6 MB and a reboot may be needed to complete the process.
KB5008218 for Windows 10 version 1809 for x64 64 bit processors can be downloaded from this page. This update weighs 554.5 MB.

All these 3 updates for Windows 10 version 1809 can be applied in a planned maintenance window as a reboot may be needed to complete the process.

Windows Server 2019 – KB5008218

Security update KB5008218 for Windows Server 2019 was released on 14th December, 2021. This security update has been released for the x64 64 bit processors. You can download the security update from the following links.

Download KB5008218 for Windows Server 2019 x64 64 bit processors from this page. This update weighs 554.5 MB. Server reboot may be needed to complete the update process.

Windows Server 2012 – KB5008255

The December security update KB5008255 for Windows Server 2012 was released on 14th December 2012. This update was released for the x86 32 bit processors. You can download the cumulative security updates for Windows Server 2012 from the below mentioned links.

KB5008255 for Windows Server 2012 for x64 64 bit processors can be downloaded from this page. This update weighs 37.2 MB. A server reboot may be needed to complete the update cycle.

Windows Server 2012 – Monthly rollup KB5008277

KB5008277 for Windows Server 2012 R2 is a monthly rollup update. It contains security updates and non-security updates for the Windows Server 2012 R2. You can download the monthly rollup update for Windows Server 2012 R2 from the links shared below.

The security update KB5008277 for Windows Server 2012 R2 for x64 64 bit processors can be downloaded from this page. This update weighs 395.7 MB. Server reboot may be needed to complete the reboot process.

Windows Server 2012 R2 Security Update – KB5008285

The security update KB5008285 for Windows Server 212 R2 was released on 14th December 2021. The update may need a reboot of the server to complete the update process.

Download the KB5008285 security update for Windows Server 2012 R2 on this page. This update weighs 40.1 MB.

Windows Server 2012 R2 Monthly Rollup – KB5008263

The monthly rollup update for Windows Server 2012 R2 contains security and non-security updates. The KB5008263 monthly rollup can be downloaded from the link below.

KB5008263 for Windows Server 2012 R2 can be downloaded from this page. This update works on the x64 or 64 bit processors. The update weighs 540.4 MB.

The Windows Server 2012 R2 monthly rollup also contains the security update for the server. So, you may deploy the monthly rollup and it will automatically take care of the cumulative security update.

Details of the monthly security updates and the monthly rollup updates can also be taken from the following pages as well. These pages have details of the vulnerabilities and the update process for a ready reference.

Rajesh Dhawan

Rajesh Dhawan is a technology professional who loves to blog about smart wearables, Cloud computing and Microsoft technologies. He loves to break complex problems into manageable chunks of meaningful information.