Important
This standalone security update has been removed due to an issue affecting a sub-set of devices. It will not be re-offered from Windows Update, Windows Server Update Services (WSUS) or Microsoft Update Catalog. Note Removal of this standalone security update does not affect successful installation or any changes within any other February 11, 2020 security updates, including Latest Cumulative Update (LCU), Monthly Rollup or Security Only update.
Summary
This update makes improvements to the supported Windows OS versions listed in the "Applies to" section. Key changes include the following:
- Addresses an issue in which a third-party Unified Extensible Firmware Interface (UEFI) boot manager might expose UEFI-enabled computers to a security vulnerability.
To learn more about this security update, see Microsoft Common Vulnerabilities and Exposures.
Known Issues
Symptom | Workaround |
You might encounter issues trying to install or after installing KB4502496. | This issue was resolved in KB4535680. This update should only be offered if it is applicable to your device. You might need to update UEFI firmware of your devices or adjust other settings before deploying this update. For more information, see KB4535680. If KB4502496 is installed and you are experiencing issues, you can uninstall this update.
|
How to get this update
Important This standalone security update has been removed due to an issue affecting a sub-set of devices. It will not be re-offered from Windows Update, Windows Server Update Services (WSUS) or Microsoft Update Catalog. Note Removal of this standalone security update does not affect successful installation or any changes within any other February 11, 2020 security updates, including Latest Cumulative Update (LCU), Monthly Rollup or Security Only update.
Prerequisites
There are no prerequisites to apply this update.
Restart information
Your device does not have to restart when you apply this update. If you have Windows Defender Credential Guard (Virtual Secure Mode) enabled, your device will restart two times.
Update replacement information
This update does not replace any previously released update.
File information
File verification
File attributes
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.
Windows 10
Windows 8.1 and Windows Server 2012 R2
Note The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
Windows Server 2012
Note The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
References
Learn about the terminology that Microsoft uses to describe software updates.