January 2021 Cumulative Updates available for Windows 8.1 and 7 SP1

In addition to a series of cumulative updates KB4598242, KB4598229, KB4598230 for Windows 10 devices, Microsoft today also released two updates KB4598275, KB4598285 for older versions. As you may recall, Microsoft ended support for Windows 7 on the 14th. January 2020 has been discontinued, so these updates are only for Windows 8.1 and Windows Server 2012 R2. The company has also released KB4598279 and KB4598289 for organizations running Windows 7 and Server 2008 that have subscribed (paid) to the Extended Security Update (ESU).

As usual there are two different updates, a monthly update and a security update that only contains security-related corrections. Although you can get a monthly Windows Update, the security update must be installed manually.

Windows 8.1 Update

Windows 8.1 KB4598285 (monthly update) and KB4598275 (secure update) provide security updates for the Windows platform and application frameworks, Windows graphics, Windows media, Windows Basics, Windows Cryptography, and Windows virtualization.

In addition, Windows 8.1 KB4598285 (Monthly Rollup) fixes a security bypass bug in the remote printer procedure call.

Fixes security holes in intranet servers based on the HTTPS protocol.

Resolves an issue where a trusted managed identity for applications (MIT) domain client was not receiving a Kerberos service ticket from Active Directory (AD) domain controllers.

is a known problem:

Renaming files or folders on a clustered shared volume (CSV) may fail with the STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5) error.

In addition, this update KB4598275, KB4598285 will be installed automatically by Windows Update or you can check for updates manually at

• Control Panel, then System and Security.
• Click on the green header to open Windows Update.
• Select Windows Update from the middle of the list.
• Check for updates. On the Home screen, click Check for Updates.

You can also download a separate package for this update from the Microsoft Update Catalog website.

Windows 7 SP1

The monthly update KB4598279 and update KB4598289 for Windows 7 Service Pack 1 contains only one change, similar to Windows 8.1.

• Security updates for Windows App, Windows Graphics, Windows Media, Windows Fundamentals, Windows Cryptography, Windows Virtualization, and Windows Hybrid Storage Services platforms and frameworks.

In addition, KB4598279 (monthly rollup) addresses a security bypass flaw that exists in the way the RPC (printer remote procedure call) link handles authentication for the Winspool remote interface.

Fixes security holes in intranet servers based on the HTTPS protocol.

Fixed an issue where the Trusted Managed Identity for Applications (MIT) manager did not receive a Kerberos service ticket from Active Directory (AD) domain controllers.

A known problem

Renaming files or folders on a clustered shared volume (CSV) may fail with the STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5) error.

After installing this update and rebooting the device, you may get the error message Windows updates cannot be configured. Reversible changes. If you do not turn off the computer, the update may appear as a failure in the update history.

The company states that this problem is expected in the following circumstances:

• If you install this update on a device running an edition not supported by ESU. See KB4497181 for a complete list of supported editions.
• If you have not installed and activated the optional ESU MAK

If you purchased an ESU code and are experiencing this problem, make sure you meet all the requirements and that your code is activated.

Important note : Windows 7 is phased out

Windows 7 has reached the end of its lifecycle with an update (KB4598279, KB4598289). This means that devices still running Windows 7 will no longer receive updates and security patches from Microsoft. And the company recommends upgrading to Windows 10 to take advantage of the latest security and malware protection features.

According to Microsoft, the concrete end of Windows 7 support is 14. January 2020. Technical support and Windows Update software updates to protect your PC are no longer available for this product.

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Download cumulative Windows 7 updates

It is recommended to update the software according to the preceding instructions before installing KB4537820 KB4537813:

You must install the updates below and reboot the device before installing the latest rollup. Installing these updates increases the reliability of the update process and reduces potential problems with the installation and application of Microsoft security patches.

1. Updating the service stack (SSU) 12. March 2019 (KB4490628).  To get a separate package for this SSU, look for it in the Microsoft Update Catalog. This update is required to install updates signed with SHA-2 only.
2. The last update to SHA-2 (KB4474419) was published on 10. September 2019 published. If you use Windows Update, you are automatically prompted for the latest SHA-2 update. This update is required to install updates signed with SHA-2 only. For more information on SHA-2 updates, see Requirements 2019 for SHA-2 Code Signing Support for Windows and WSUS.
3. 14. January 2020 SBU (KB4536952) or later. To get a separate package for this SSU, look for it in the Microsoft Update Catalog.
4. Security Extended License Preparation Unit (ESU) (KB4538483), published on 11. February 2020. The WSUS provides a preparation kit for obtaining an ESU license. To obtain a separate ESU license preparation pack, you can find it in the Microsoft Update Catalog.

After installing the above items, Microsoft strongly recommends installing the latest versionSSU(KB4537829). If you use Windows Update, the latest version of SSU is automatically offered to you if you are an ESU customer.

Thanks to the support of Microsoft

This update is automatically downloaded and installed by Windows Update on all compatible devices running Windows 7 SP1 or Windows Server 2008 SP1 and connected to a Microsoft server. To manually check and install updates

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1. Open the Start menu. …
2. Open the control panel. In the Start column on the right, click Control Panel.
3. Go to System and Security. Click on the green header.
4. Open theWindowsupdate. Select Windows Update from the middle of the list.
5. Check for updates. On the Home screen, press the Check for Updates button.

You can also get a separate package for this update, go to the Microsoft Update Catalog page.

Also read :

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Related Tags:

microsoft esu, kb4565354, kb4571703, microsoft patches known issues, kb4494440, windows 7 extended support end date, windows 7 extended support 2023, kb4507460 issues