Today is the monthly 'Windows Update' day

This month too, there was a Windows Update that delivers monthly Windows security updates and bug fixes. Let's update as soon as possible.

We have released the security update for September 2021. https://t.co/JjxA7tPPH2
By default, it is updated automatically. An overview is posted on the blog for corporate organizations that manage updates. Please refer to it and deploy the update as soon as possible. https://t.co/0uHj0l0hzy pic.twitter.com/9gRQFbDhbn

— Microsoft Security Team (@JSECTEAM) September 14, 2021

September 2021 Security Update (Monthly) – Microsoft Security Response Center
https://msrc-blog.microsoft.com/2021/09/14/202109-security-updates/

◆ Windows 10 v21H1, v20H2, v2004, v1909
Maximum severity:
emergency

Most impact:
Code is executed remotely

Related Knowledge Base or Support Web Page:
Windows 10 v21H1, Windows 10 v20H2, Windows 10 v2004: 5005565
Windows 10 v1909: 5005566

◆ Windows Server 2022, Windows Server 2019, Windows Server 2016, Server Core installations (2019, 2016, v20H2, v2004)
Maximum severity:
emergency

Most impact:
Code is executed remotely

Related Knowledge Base or Support Web Page:
Windows Server 2022, Windows Server, version 20H2, Windows Server, version 2004: 5005565
Windows Server 2019: 5005568
Windows Server 2016: 5005573

◆ Windows 8.1, Windows Server 2012 R2, Windows Server 2012
Maximum severity:
emergency

Most impact:
Code is executed remotely

Related Knowledge Base or Support Web Page:
Windows 8.1, Windows Server 2012 R2 Monthly Rollup: 5005613
Windows 8.1, Windows Server 2012 R2 Security Only: 5005627
Windows Server 2012 Monthly Rollup: 5005623
Windows Server 2012 Security Only: 5005607

◆ Microsoft Office related software
Maximum severity:
important

Most impact:
Code is executed remotely

Related Knowledge Base or Support Web Page:
4484103 , 4484108 , 5001958 , 5001997 , 5001999 , 5002003 , 5002005 , 5002007 , 5002009 , 5002014

◆ Microsoft SharePoint related software
Maximum severity:
important

Most impact:
Spoofing

Related Knowledge Base or Support Web Page:
5002018 , 5002020 , 5002024

◆ Microsoft Visual Studio related software
Maximum severity:
important

Most impact:
Code is executed remotely

Related Knowledge Base or Support Web Page:
For more information about security updates for Visual Studio-related software, see https://docs.microsoft.com/visualstudio and the Security Update Guide https://msrc.microsoft.com/update-guide .

◆ Microsoft Dynamics 365 related software
Maximum severity:
important

Most impact:
Spoofing

Related Knowledge Base or Support Web Page:
5006075 , 5006076

◆ Microsoft Azure related software
Maximum severity:
emergency

Most impact:
Code is executed remotely

Related Knowledge Base or Support Web Page:
For more information about security updates for Azure-related software, see the Security Update Guide https://msrc.microsoft.com/update-guide .

The Windows Update will be released on the second Tuesday of every month in US time, and the next update will be available on Wednesday, October 13, 2021 in Japan time.