July 9, 2024—KB5040498 (Security-only update)

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Change log

Change date	Change description
August 13, 2024	The BitLocker Recovery screen known issue is resolved in update KB5041823.

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End of support information

• As of January 10, 2023, Microsoft no longer provides security updates or technical support for Windows 7 Service Pack 1 (SP1). We recommend that you upgrade to a supported version of Windows. For more information, see Update that enables you to upgrade from Windows 7 to a later version of Windows.
• Windows Server 2008 R2 Extended Security Updates (ESU) third and final year ended on January 10, 2023. Additionally, Windows Server 2008 R2 on Azure ended support on January 9, 2024.

We recommend that you upgrade to a later version of Windows Server. For more information, see Overview of Windows Server upgrades

• Windows Thin PC reached the end of support on October 12, 2021. Extended Security Updates are not available. For more information, see Windows Thin PC.
• Windows Embedded Standard 7 Extended Security Updates reached end of support on October 10, 2023. For more information, see Windows Embedded Standard 7.
• Windows Embedded POSReady 7 Extended Security Updates will end after October 8, 2024. For more information, see Windows Embedded POSReady 7.

Summary

Learn more about this security-only update, including improvements, any known issues, and how to get the update.

Note As of July 2020, optional non-security releases for this operating system are no longer offered. Operating systems in extended support have only cumulative monthly security updates.Verify that you have installed the required updates in theHow to get this update section before installing this update.For information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, see Description of the standard terminology that is used to describe Microsoft software updates. To view other notes and messages, see Windows 7 SP1 and Windows Server 2008 R2 SP1 update history.

Improvements

The following is a summary of the key issues that this update addresses. The bold text within the brackets indicates the item or area of the change we are documenting.

• [DST] The official name of the former “Republic of Turkey” is changed toRepublic of Türkiye in English. For more information about DST changes, see the Daylight Saving Time & Time Zone Blog.
• [IME] In some scenarios, an Input Method Editor (IME) will either not show or show in an incorrect position.
• [RADIUS protocol] A security vulnerability exists in the Remote Authentication Dial-In User Service (RADIUS) protocol related to MD5 collision problems. For more information, see KB5040268.​​​​​​​
  For more information about the resolved security vulnerabilities, please refer to the Deployments | Security Update Guide and the July 2024 Security Updates.

Known issues in this update

Symptom	Workaround
After installing this update, you might see a BitLocker recovery screen upon starting up your device. This screen does not commonly appear after a Windows update. You are more likely to face this issue if you have the Device Encryption option enabled in Settings under Privacy & Security >Device encryption. Because of this issue, you might be prompted to enter the recovery key from your Microsoft account to unlock your drive.	This issue is resolved in update KB5041823.
For the current status of any past Known Issue, see the Windows Server 2008 R2 SP1 Known Issues page.

How to get this update

Before installing this updateWe strongly recommend that you install the latest servicing stack update (SSU) for your operating system before installing the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup and applying Microsoft security fixes. For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.If you use Windows Update, the latest SSU (KB5039339) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog.Language packsIf you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Learn about adding a language pack to Windows.Install this updateTo install this update, use one of the following release channels.

Windows UpdateUpdate CatalogServer Update Services

Available	Next step
No	This update is not available from Windows Update. See theUpdate CatalogorServer Update Services release channel.

Available	Next step
Yes	To get the standalone package for this update, go to the Microsoft Update Catalog website.To download updates from the Update Catalog, see Steps to download updates from the Windows Update Catalog.

Available	Next step
Yes	This update will automatically sync if you configureProducts and Classifications as follows:

• Product: Windows Server 2008 R2 Service Pack 1
• Classification: Security Updates
  For more information about configuring in WSUS, see Windows Server Update Services (WSUS).For more information about configuring in Configuration Manager, see Synchronize software updates.

Reminder If you are using Security-only updates, you will also need to install all previous Security-only updates and the latest cumulative update for Internet Explorer (KB5040426).

File information

For a list of the files that are provided in this update, download the file information for update KB5040498.