Windows 11 : The February 2024 security update might fail to install

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https://learn.microsoft.com/en-us/windows/release-health/status-windows-11-23h2#3253msgdesc

OS Build 22621.3155
KB5034765

Windows 11 devices attempting to install the February 2024 security update, released February 13, 2024 ( KB5034765) might face installation failures and the system might stop responding at 96%.

Resulting from this error, the following message might be displayed:

​“Something didn’t go as planned. No need to worry – undoing changes. Please keep your computer on”.
This issue might be reflected in the Windows Event Viewer with error code ‘0x800F0922’.

Workaround:

This issue can be prevented by deleting the hidden folder C:\$WinREAgent. A restart might be required. After following these steps, installing the February 2024 security update should succeed.

We are working on a resolution for this issue and will provide an update in an upcoming release.

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That took them a LONG time to acknowledge what was identified as a workaround a bit ago.

Susan Bradley Patch Lady/Prudent patcher

1 user thanked author for this post.

Alex5723

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https://learn.microsoft.com/en-us/windows/release-health/status-windows-11-23H2#3253msgdesc

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Below are two possible ways to delete the C:\$WinREAgent folder.

1) Manually delete the folder: To delete a hidden folder in Windows 11, you need to first make the folder visible and then delete it.

​Open File Explorer from the Taskbar, or by pressing Windows key + E.
​Click on the three-dotted icon and select Options.

​Go to the View tab and select the Show hidden files, folders, and drives option. Click the OK button to save the change.

​Now, you should be able to see the hidden folder C:\$WinREAgent in File Explorer. Right-click the hidden folder C:\$WinREAgent and select Delete.

2) Run a script to delete the folder:

​Open the start menu and type command prompt.

​From the results displayed at the right side of the start menu, select ‘Run as administrator’.

​On the command prompt, type the command rd /s /q “C:\$WinREAgent” and press enter.

​If no message is displayed, it means the command has succeeded and the folder has been deleted. You can proceed to close the command prompt window.

​Note that a message is only displayed if an error was encountered. In this case, we recommend deleting the folder manually…

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