Important:* Verify that you have installed the required updates listed in the How to get this update* section before installing this update.
Important: For information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following article. To view other notes and messages, see the Windows 7 SP1 and Windows Server 2008 R2 SP1 update history home page.
This security update includes improvements and fixes that were a part of update KB4601347 (released February 9, 2021) and addresses the following issues:
For more information about the resolved security vulnerabilities, please refer to the new Security Update Guide website.
After installing this update and restarting your device, you might receive the error, “Failure to configure Windows updates. Reverting Changes. Do not turn off your computer,” and the update might show as Failed in Update History.| This is expected in the following circumstances:
If you have purchased an ESU key and have encountered this issue, please
verify you have applied all prerequisites and that your key is activated. For
information on activation, please see this blog
post. For information on the prerequisites, see the "How to get this update"
section of this article.
Certain operations, such as rename , that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, “STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)”. This occurs when you perform the operation on a CSV owner node from a process that doesn’t have administrator privilege.| Do one of the following:
Microsoft is working on a resolution and will provide an update in an upcoming
After installing updates released March 9, 2021, you might get unexpected results when printing from some apps. Issues might include:
| This issue is resolved in KB5001639.
IMPORTANT Customers who have purchased the Extended Security Update (ESU) for on-premises versions of these operating systems must follow the procedures in KB4522133 to continue receiving security updates after extended support ends. Extended support ends as follows:
For more information about ESU and which editions are supported, see KB4497181. Note For Windows Embedded Standard 7, Windows Management Instrumentation (WMI) must be enabled to get updates from Windows Update or Windows Server Update Services. Prerequisite: You must install the updates listed below and restart your device before installing the latest Rollup. Installing these updates improves the reliability of the update process and mitigates potential issues while installing the Rollup and applying Microsoft security fixes.
After you install the items above, we strongly recommend that you install the latest SSU (KB4592510). If you are using Windows Update, the latest SSU will be offered to you automatically if you are an ESU customer. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog. For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.
Release Channel| Available| Next Step
Windows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update if you are an ESU customer.
Microsoft Update Catalog| Yes| To get the standalone package for this update, go to the Microsoft Update Catalog website.
Windows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure Products and Classifications as follows: Product : Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1, Windows Embedded Standard 7 Service Pack 1, Windows Embedded POSReady 7, Windows Thin PC Classification : Security Updates
For a list of the files that are provided in this update, download the file information for cumulative update 5000841.