Windows 11 (KB5021255 update): all the news

Here comes the last update of the year for Windows 11. Microsoft launched the operating system in October 2021, with some haste, but the truth is that it has only gotten better. Today, if we can recommend it to everyone, it is partly thanks to these patches that have corrected a large number of problems (some of which even came from the Windows 10 era). Today is the turn of the KB5021255 update, with which we will reach version 22621.963 of Windows 11.

To be able to access this update you need to have previously updated to Windows 11 2022 Update, the great update to Windows 11 that arrived in September of this year. Let’s go with the grades of the last Patch Tuesday of the year!

What’s new in the KB5021255 update

• Fixed an issue where Task Manager sometimes displayed wrong colors.
• Microsoft embeds storage alerts for OneDrive subscribers on the Systems page of the Settings app. Alerts appear when you are close to your storage limit. You can also manage storage and purchase additional storage, if needed.
• Provides the full storage capacity of all OneDrive subscriptions. It also shows total storage on the Accounts page of the Settings app.
• Combine featured Windows content with Themes on the Personalization page. This makes it easier to detect and turn on the Windows Featured Content feature.
• Adds a new mobile device management (MDM) policy for organization messages. Gives your company the option to enroll tenant devices to receive personalized messages from you. For example, you can use Intune to write your messages. They will be rendered in Windows.
• Fixes an issue affecting some modern apps. This prevents them from opening.
• Fixes an issue affecting some company-managed devices. We improve the reliability of app installs for them.
• Addresses the suspension of Daylight Saving Time (DST) in the Republic of Fiji for this year.
• Fixed an issue that affects Distributed Component Object Model (DCOM) authentication protection. It will automatically increase the authentication level for all non-anonymous activation requests from DCOM clients to RPC_C_AUTHN_LEVEL_PKT_INTEGRITY. This occurs if the authentication level is below Packet Integrity.
• Fixes an issue that affects local Unified Update Platform (UUP) clients. Removes the block that prevents them from getting offline language packs.
• Fixes an issue affecting process creation. Security audits cannot be created for it or any related audit events.
• Fixed an issue that affects Cluster Name Objects (CNOs) or Virtual Machine Objects (VCOs). An error occurs while resetting the password. The error message is “An error occurred while resetting the AD password… // 0x80070005”.
• Fixed an issue affecting transparency in overridden windows. This occurs when you are in Remote Integrated High Definition (RAIL) applications local mode.
• Fixed a known issue affecting the Input Method Editor (IME). Some applications may stop responding. This occurs when using keyboard shortcuts to change the input mode of the IME.
• Fixes an issue affecting microphone streams that use the Listen feature to redirect to the speaker hotspot. The microphone stops working after restarting the device.
• Fixed an issue that could affect apps running on Windows Lockdown Policy (WLDP). They could stop working.
• Addresses an issue affecting Microsoft Defender when it is not the primary antivirus. Microsoft Defender can’t turn off passive mode. This issue occurs when you disable Smart App Control (SAC).
• Adds .wcx to the list of dangerous extensions that some application control policies do not allow.
• Addresses an issue affecting Microsoft Defender for Endpoint. Automated investigation blocks active response investigations.
• Fixes an issue that affects printing in landscape mode in Microsoft Edge. The print is not correct. This issue occurs when using Microsoft Defender Application Guard.
• Fixes an issue that causes File Explorer to stop working. This occurs when closing context menus and menu items.
• Fixes an issue that could cause certain apps to stop responding. This occurs when using the File Open dialog.
• Fixed an issue that sometimes affects File Explorer when opening a file. Due to this, there is high CPU usage.
• Fixed an issue affecting protocol activation of the Settings app. The app cannot open a page in the Accounts category.
• Fixed an issue affecting a team account. Using non-standard characters can stop Out-of-Box Account Cleanup (OOBE) cleanup.
• Fixed an issue affecting the feature CopyFile . Sometimes it can return error 317: ERROR_MR_MID_NOT_FOUND.
• Fixed an issue affecting the Windows Firewall service. It is not started by activating the Override block rules option.
• Fixes an issue affecting some games and apps. This issue is related to the performance debugging features of the GPU. This reduces the expected performance of the game.
• Fixed an issue that affects cumulative update installations. They fail and the error code is 0x800f0806.

This monthly update also comes with a series of security fixes, so we always recommend installing it. To do this, all you have to do is go to the Settings> Windows Update section and look for updates. There you will find this patch KB5021255 that will take you to Windows 11 22621.963.