Windows 11 KB5059693 fixes system instability issue

Microsoft released update KB5059693 for Windows 11 version 24H2 on May 28, 2025.

This update improves the Windows Recovery Environment in Windows 11 Version 24H2 and Windows Server 2025.

KB5059693 fixes an issue that affects the Local Security Authority Subsystem Service (LSASS) during Windows Recovery Environment operations.

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Attention! How to check if Windows 11 "Local Security Authority Protection" is enabled This time, we will show you how to check whether "Local Security Authority (LSA) Protection" is enabled in Windows 11. In Windows 11, "...

Specifically, the Local Security Authority Subsystem Service (LSASS) may crash when an application calls certain functions.

If a service crashes, the system will be affected and become unstable.

KB5059693 will be downloaded and applied automatically through Windows Update, but you can also download the update from the Microsoft Update Catalog and apply it manually.

Steps to manually apply KB5059693

1. On the following page, click the "Download" button to the right of the update that matches your PC.

Microsoft Update Catalog (KB5059693)

Clicking the "Download" button will open the download page for KB5059693. Refer to the image below and click the link in the red box to download the file.

2.Cドライブ直下に「downloadedupdate」というフォルダーを作成し、ダウンロードしたファイル「windows11.0-kb5059693-x64_bb51f1eadbba9b776ef15eaf2b736018d9117110.cab」を移動してください。

3. Open Command Prompt as administrator.

Learn how to open a command prompt

1. Press Windows key + R to open Run.

2. Type "cmd".

3.Shift + Ctrl + Enter Please press.

If you do not need administrator privileges, just press Enter.

4. When the "User Account Control" message appears, click "Yes".

4. Type the following command and press Enter:

md c:\mount

When you run the above command, a "mount" folder will be created directly under the C drive.

5. Type the following command and press Enter:

ReAgentC.exe /mountre /path c:\mount

The above command will mount the Windows RE image using REAgentC.

*The files will be copied to the "mount" folder, which will take some time.

If the message "REAGENTC.EXE: Operation successful" is displayed, proceed to the next step.

6. Type the following command and press Enter:

Dism /Add-Package /Image:C:\mount\ /PackagePath:"c:\downloadedupdate\windows11.0-kb5059693-x64_bb51f1eadbba9b776ef15eaf2b736018d9117110.cab"

When you run the above command,Windows RE imageAdd an update to.

If the message "The operation completed successfully" is displayed, proceed to the next step.

7. Type the following command and press Enter:

dism /image:C:\mount /cleanup-image /StartComponentCleanup /ResetBase

Running the above command will clean up the Windows RE image and reset the base of replaced components.

If the message "The operation completed successfully" is displayed, proceed to the next step.

8. Type the following command and press Enter:

ReAgentC.exe /unmountre /path c:\mount /commit

The above command will unmount the Windows RE image.

*This will take some time as it will delete the files in the "mount" folder.

If the message "REAGENTC.EXE: Operation successful" is displayed, proceed to the next step.

9. The "mount" folder will now be empty, so you can either manually delete the "mount" folder or type the following command and press Enter.

rd c:\mount

Executing the above command will delete the "mount" folder directly under the C drive.

10. If your disk is protected by BitLocker or Device Encryption, type the following command and press Enter:

reagentc /disable

Running the above command will disable the Windows Recovery Environment (WinRE).

Next, type the following command and press Enter:

reagentc /enable

Running the above command will enable the Windows Recovery Environment (WinRE).

Your Windows RE image is now updated and KB5059693 has been applied.

There is no need to reboot,

If you want to check whether the update has been properly completed, please refer to the following page and check the "Modification Date and Time" of the Windows RE image.

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How to check the version of a Windows RE image and a simple tool to check it Recently (April 8, 2025), Microsoft announced a known issue where the error "0x80070643 – ERROR_INSTALL_FAILURE" appears after installing KB5057589.