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Recent announcements

MessageDate
July 2020 Windows "C" optional release for Windows 10, version 2004 is available
The July 2020 optional monthly “C” release for Windows 10, version 2004 is now available. For more information on the different types of monthly quality updates, see our Windows 10 update servicing cadence primer. Follow @WindowsUpdate for the latest on the availability of this release.
July 31, 2020
10:00 AM PT
SHA-1 Windows content to be retired August 3, 2020
To support evolving industry security standards, and continue to keep you protected and productive, Microsoft will retire content that is Windows-signed for Secure Hash Algorithm 1 (SHA-1) from the Microsoft Download Center on August 3, 2020. This is the next step in our continued efforts to adopt Secure Hash Algorithm 2 (SHA-2), which better meets modern security requirements and offers added protections from common attack vectors. For more information see SHA-1 Windows content to be retired August 3, 2020.
July 28, 2020
05:48 PM PT
Explore and validate Windows 10 builds with Windows Insider Channels
Find out how to utilize the Windows Insider Program as an IT admin and how best to utilize the new Windows Insider Channels to validate the apps and hardware used across your organization
July 23, 2020
03:30 PM PT
July 2020 Windows non-security preview "C" release is available for some versions for Windows 10
The July 2020 monthly “C” release preview updates are now available for Windows 10, version 1809, Windows Server 2019, Windows 10, version 1903 and Windows 10, version 1909. The preview update for Windows 10, version 2004 will be available in the near term. For more information on the different types of monthly quality updates, see our Windows 10 update servicing cadence primer. Follow @WindowsUpdate for the latest on the availability of this release.
July 21, 2020
02:00 PM PT
Take action: July 2020 security update available for all supported versions of Windows
The July 2020 security update release, referred to as our “B” release, is now available for Windows 10, version 2004 and all supported versions of Windows. We recommend that you install these updates promptly. For more information on the different types of monthly quality updates, see our Windows 10 update servicing cadence primer. To be informed about the latest updates and releases, follow us on Twitter @WindowsUpdate.
July 14, 2020
10:00 AM PT
Advisory: Remote Code Execution security vulnerability affects Windows DNS servers (CVE-2020-1350)
On July 14, 2020, Microsoft released security updates to address a privately reported Remote Code Execution (RCE) security vulnerability that affects Windows DNS servers. This vulnerability applies to all versions of the Windows Server and is addressed in the normal monthly security update release.

While we have not observed an attack exploiting this vulnerability, we recommend that you apply this update that address CVE-2020-1350 to all of your Windows Server devices with priority. If that is not possible, then deploying the workaround detailed in KB4569509: Guidance for DNS Server Vulnerability CVE-2020-1350 is recommended until you are able to install the update. Here is what you need to know:
  • If you are running a supported version of Windows Server and have automatic updates enabled, you are automatically protected and do not need to take any further action.
  • If you are managing updates on behalf of your organization, you should download the latest updates from the Microsoft Security Update Guide and apply those updates to your Windows servers as soon as possible.
If you are running an unsupported version of Windows Server, we recommend that you upgrade to the current version of Windows Server to benefit from the latest security protections. 

For more information about this vulnerability, see the Microsoft Security Response Center blog, July 2020 Security Update: CVE-2020-1350 Vulnerability in Windows DNS (Domain Name System) Server.
July 14, 2020
10:00 AM PT
Simplified Windows Update settings for end users
In Windows 10, version 2004, we removed two Windows Update settings advanced options that enabled you to defer feature updates and/or quality updates by a specific number of days. This change enables those running premium editions of Windows 10 (e.g. Pro, Enterprise, Education) to remain on a given Windows 10 release for a longer period of time. For more information, see Simplified Windows Update settings for end users.
June 30, 2020
10:00 AM PT
Resuming optional Windows 10 and Windows Server non-security monthly updates
In March, we announced that we would pause optional non-security update releases (also referred to as "C" and "D" releases) for all supported versions of Windows client and Windows Server to give organizations time to focus on business continuity in the face of the global pandemic. Based on your feedback and the increase in standard business operations, we will resume optional releases beginning in July 2020 for Windows 10, version 1809 and Windows Server, version 1809 and later. This will, once again, provide you with validated, production-quality “Preview” releases that you can use to test planned non-security fixes targeted for the next month’s Update Tuesday (or "B") release.

We are also instituting a few changes to simplify the update process and help you continue to stay current with Windows 10 and Windows Server. For more information on these changes, see the Windows IT Pro Blog. There is no change to the cumulative monthly security updates (also referred to as the "B" or Update Tuesday release). These releases will continue to contain all previous updates to keep your users protected and productive.  
June 17, 2020
10:00 AM PT
Roll out updates faster with the Update Baseline for Windows 10
Download recommended configuration settings plus guidance on customizing those settings to meet your organization’s unique needs and implementing strategies to help you increase update velocity. See the Windows IT Pro Blog post for more information.
June 16, 2020
02:30 PM PT
What’s next for Windows 10 updates
Learn about the next feature update, Windows 10, version 20H2, which is targeted for release later in the second half of this year and will be delivered in an optimized way for anyone running the Windows 10 May 2020 Update. Get an overview of our plans for this next release and find out how you can leverage the Windows Insider Program to preview the latest features today.
June 16, 2020
02:30 PM PT
Out-of-band update for an issue in which certain printers may be unable to print after installing updates released June
An out-of-band optional update is now available on the Microsoft Update Catalog to address a known issue in which certain printers may be unable to print after installing updates released June 9, 2020.

We recommend you only install this optional update if you are affected by this issue. For more information, see the known issues section for your version of Windows 10 or see the links below.

For instructions on how to install this update for your operating system, see the KB for your OS listed below:

Updated June 18, 2020 Additional updates were added to the list above. All affected versions of Windows have now been addressed.
June 16, 2020
10:00 AM PT
Take action: June 2020 security update available for all supported versions of Windows
The June 2020 security update release, referred to as our “B” release, is now available for Windows 10, version 2004 and all supported versions of Windows. We recommend that you install these updates promptly. For more information on the different types of monthly quality updates, see our Windows 10 update servicing cadence primer. To be informed about the latest updates and releases, follow us on Twitter @WindowsUpdate
 
June 09, 2020
10:00 AM PT
Windows 10, version 2004 is now available
Learn how to get the latest update and get details on the overall rollout plan, then explore the latest features for advanced users and small or midsize businesses.
May 27, 2020
10:00 AM PT
What’s new for IT pros in Windows 10, version 2004
Find information about the latest features and servicing improvements, updates for common deployment tools, availability in commercial channels, and answers to frequently asked questions. Need proven tips and best practices on how to deploy Windows 10, version 2004 across your organization whether devices are on premises or being utilized by a remote workforce? See Deploying a new version of Windows 10 in a remote world. Looking for information on what’s new in Windows Server, version 2004? See the Windows Containers blog.
May 27, 2020
10:00 AM PT
Take action: May 2020 security update available for all supported versions of Windows
The May 2020 security update release, referred to as our “B” release, is now available for Windows 10, version 1909 and all supported versions of Windows. We recommend that you install these updates promptly. For more information on the different types of monthly quality updates, see our Windows 10 update servicing cadence primer. To be informed about the latest updates and releases, follow us on Twitter @WindowsUpdate.
May 12, 2020
09:45 AM PT
April 2020 Windows "C" optional release is available
The April 2020 optional monthly “C” release for all supported versions of Windows prior to Windows 10, version 1909 is now available. For more information on the different types of monthly quality updates, see our Windows 10 update servicing cadence primer. Follow @WindowsUpdate for the latest on the availability of this release. Note For information on optional updates starting May 2020, see Timing for upcoming Windows optional C and D releases.
April 21, 2020
10:00 AM PT
Quickly find details on monthly updates for Windows Server containers
As part of our monthly servicing cadence, we publish updated Windows Server Base OS container images. Since Windows Server containers don't have a servicing stack like Windows Server or Windows client, in-place updates cannot be used for containers. It is, therefore, recommended that you leverage the monthly updates to automate the creation of updated container images or manually update your existing images. Bookmark the new Windows Server container update history page to access the latest updates.
April 14, 2020
10:00 AM PT
Take action: April 2020 security update available for all supported versions of Windows
The April 2020 security update release, referred to as our “B” release, is now available for Windows 10, version 1909 and all supported versions of Windows. We recommend that you install these updates promptly. For more information on the different types of monthly quality updates, see our Windows 10 update servicing cadence primer. To be informed about the latest updates and releases, follow us on Twitter @WindowsUpdate.
April 14, 2020
09:45 AM PT
Revised end of service date for Windows 10, version 1809
We have been evaluating the public health situation and understand the impact this is having on many of our customers. To help ease some of the burdens customers are facing, we are going to delay the scheduled end of service date for the Home, Pro, Pro Education, Pro for Workstations, and IoT Core editions of Windows 10, version 1809 to November 10, 2020. This means devices will receive monthly security updates only from June to November. The final security update for these editions of Windows 10, version 1809 will be released on November 10, 2020 instead of May 12, 2020. For more information, see Windows lifecycle fact sheet and Lifecycle changes to end of support and servicing dates.
April 14, 2020
08:45 AM PT
Out-of-band update for internet connectivity issues on devices with manual or auto-configured proxies including VPNs
An out-of-band optional update is now available on the Microsoft Update Catalog to address a known issue whereby devices using a proxy, especially those using a virtual private network (VPN), might show limited or no internet connection status.

We recommend you only install this optional update if you are affected by this issue. For more information, see the known issues section for your version of Windows 10 or see the links below.

For instructions on how to install this update for your operating system, see the KB for your OS listed below, all of which were released March 30, 2020:
March 30, 2020
01:45 PM PT
Timing for upcoming Windows optional C and D releases
We have been evaluating the public health situation, and we understand this is impacting our customers. In response to these challenges we are prioritizing our focus on security updates. Starting in May 2020, we are pausing all optional non-security releases (C and D updates) for all supported versions of Windows client and server products (Windows 10, version 1909 down through Windows Server 2008 SP2).

There is no change to the monthly security updates (B release – Update Tuesday); these will continue as planned to ensure business continuity and to keep our customers protected and productive.
March 24, 2020
09:45 AM PT
March 2020 Windows 10, version 1909 and Windows 10, version 1903 "D" optional release is available
The March 2020 optional monthly “D” release for Windows 10, version 1909 and Windows 10, version 1903 is now available. For more information on the different types of monthly quality updates, see our Windows 10 update servicing cadence primer. Follow @WindowsUpdate for the latest on the availability of this release.
March 24, 2020
09:45 AM PT
Revised end of service date for Windows 10, version 1709
We have been evaluating the public health situation and understand the impact this is having on many of our customers. To help ease one of the many burdens IT teams are facing, based on customer feedback, we are going to delay the scheduled end of service date for the Enterprise, Education, and IoT Enterprise editions of Windows 10, version 1709. This means devices will receive monthly security updates only from May to October. The final security update for these editions of Windows 10, version 1709 will be released on October 13, 2020 instead of April 14, 2020. For details, please see the blog post on Tech Community.
March 19, 2020
09:45 AM PT
March 2020 Windows "C" optional release is available
The March 2020 optional monthly “C” release for all supported versions of Windows prior to Windows 10, version 1903 is now available. For more information on the different types of monthly quality updates, see our Windows 10 update servicing cadence primer. Follow @WindowsUpdate for the latest on the availability of this release.
March 17, 2020
09:30 AM PT
Take action: March 12, 2020 out of band security update released for CVE-2020-0796
On March 12, 2020, Microsoft released an "out of band" security update to address a remote code execution vulnerability in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests (CVE-2020-0796). This vulnerability applies to Windows 10, version 1903, Windows 10, version 1909, Windows Server, version 1903 and Windows Server, version 1909. While we have not observed an attack exploiting this vulnerability, we recommend that you apply this update to your affected devices with priority. Here is what you need to know:
  • If you are running Windows 10, versions 1903/1909 or Windows Server, version 1903/1909 and have automatic updates enabled, you are automatically protected and do not need to take any further action.
  • If you are managing updates on behalf of your organization, you should download the latest updates from the Microsoft Security Update Guide and apply those updates to your Windows.
Important To be protected from this vulnerability you will need to install KB4551762, even if you have installed the security update released on March 10, 2020 or applied the workaround in Microsoft Security Advisory ADV200005.

For more information about this vulnerability, see the Microsoft Security Advisory CVE-2020-0796.
March 12, 2020
08:00 AM PT
Advisory: Guidance for Disabling SMBv3 Compression (ADV200005)
Microsoft is aware of a remote code execution vulnerability in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests. This vulnerability applies to Windows 10, version 1903, Windows 10, version 1909, Windows Server, version 1903 and Windows Server, version 1909. A workaround is available that may be helpful for your environment. Microsoft will update the advisory and the Message Center as updates are available. For more information about this vulnerability and to subscribe to updates, see the Microsoft Security Advisory ADV200005.

Updated March 12, 2020: This remote code vulnerability has been addressed by an "out of band" security update and is now assigned to CVE-2020-0796. For more information, please see the announcement above.
March 12, 2020
08:00 AM PT
Take action: March 2020 security update available for all supported versions of Windows
The March 2020 security update release, referred to as our “B” release, is now available for Windows 10, version 1909 and all supported versions of Windows. We recommend that you install these updates promptly. For more information on the different types of monthly quality updates, see our Windows 10 update servicing cadence primer. To be informed about the latest updates and releases, follow us on Twitter @WindowsUpdate.
March 10, 2020
09:30 AM PT
February 2020 Windows 10, version 1909 and Windows 10, version 1903 "D" optional release is available
The February 2020 optional monthly “D” release for Windows 10, version 1909 and Windows 10, version 1903 is now available. For more information on the different types of monthly quality updates, see our Windows 10 update servicing cadence primer. Follow @WindowsUpdate for the latest on the availability of this release.
February 27, 2020
01:30 PM PT
February 2020 Windows "C" optional release is available.
The February 2020 optional monthly “C” release for all supported versions of Windows prior to Windows 10, version 1903 is now available. For more information on the different types of monthly quality updates, see our Windows 10 update servicing cadence primer. Follow @WindowsUpdate for the latest on the availability of this release.
February 25, 2020
08:00 AM PT
Status of February 2020 “C” release
The optional monthly “C” release for February 2020 for all supported versions of Windows and Windows Server prior to Windows 10, version 1903 and Windows Server, version 1903 will be available in the near term. For more information on the different types of monthly quality updates, see our Windows 10 update servicing cadence primer. Follow @WindowsUpdate for the latest on the availability of this release.
February 21, 2020
12:00 PM PT
Compatibility issue with some Windows Server container images
If you are encountering issues with Windows Server container images, please see KB4542617.
February 13, 2020
03:21 PM PT
Take action: February 2020 security update available for all supported versions of Windows
The February 2020 security update release, referred to as our “B” release, is now available for Windows 10, version 1909 and all supported versions of Windows. We recommend that you install these updates promptly. For more information on the different types of monthly quality updates, see our Windows 10 update servicing cadence primer. To be informed about the latest updates and releases, follow us on Twitter @WindowsUpdate.
February 11, 2020
08:00 AM PT
Take action: ESU security updates available for Windows 7 SP1, Windows Server 2008 R2 SP1 and Windows Server 2008 SP2
Windows 7 SP1, Windows Server 2008 R2 SP1, and Windows Server 2008 SP2 reached end of support on January 14, 2020. For customers who have purchased Extended Security Updates (ESU), the first monthly ESU security updates are now available. If your organization has not yet been able to complete your transition to Windows 10, Windows Server 2016, or Windows Server 2019 and want to continue to receive security updates for your current version of Windows, you will need to purchase Extended Security Updates. For information on how to do so, please see How to get Extended Security Updates for eligible Windows devices, Windows 7 ESU frequently ask questions, and Windows Server 2008 R2 SP1 and Windows Server 2008 SP2 ESU frequently asked questions.

We recommend ESU customers review the applicable KB article below for prerequisites and other important information you will need to deploy these updates.

The following updates were released today for Windows Server 2008 SP2:
The following updates were released today for Windows 7 SP1 and Windows Server 2008 R2 SP1:
February 11, 2020
08:00 AM PT
Resolved: Windows Search shows blank box
We are aware of a temporary server-side issue causing Windows search to show a blank box. This issue has been resolved for most users and in some cases, you might need to restart your device. We are working diligently to fully resolve the issue and will provide an update once resolved. 

This issue was resolved at 12:00 PM PST. If you are still experiencing issues, please restart your device. In rare cases, to mitigate this issue you may need to manually end the SearchUI.exe or SearchApp.exe process via Task Manager. (To locate these processes, select CTRL + Shift + Esc then select the Details tab.) If you have restarted and tried the previous mitigations and are still encountering issues with Windows Search, you are not experiencing the issue described here. Please see Fix problems in Windows Search for other mitigations.
February 05, 2020
12:00 PM PT
January 2020 Windows "C" optional release is available.
The January 2020 optional monthly “C” release for all supported versions of Windows is now available. For more information on the different types of monthly quality updates, see our Windows 10 update servicing cadence primer. Follow @WindowsUpdate for the latest on the availability of this release.
January 23, 2020
12:00 PM PT
Timing of Windows 10 optional update releases (December 2019)
For the balance of this calendar year, there will be no optional non-security “C” and “D” releases for Windows 10. The "C" releases normally target the third week of the month, with "D" releases targeting the fourth week. For more information on the different types of monthly quality updates, see our Windows 10 update servicing cadence primer.
December 10, 2019
08:00 AM PT
Windows 10, version 1909 delivery options
Learn how devices running Windows 10, version 1903 can update to Windows 10, version 1909 using the same servicing technology used to deliver monthly quality updates, resulting in a single restart and reducing update-related downtime.
November 12, 2019
10:00 AM PT
What’s new for IT pros in Windows 10, version 1909
Explore the latest features for IT, get information about media availability and related tools, and find answers to frequently asked questions.
November 12, 2019
10:00 AM PT