Recently, Microsoft released a new security update, KB5066791 for Windows 10 version 22H2 with various security improvements that fix various bugs, including problems introduced by previous updates to the operating system. But it seems the latest update, KB5066791, caused a strange issue by removing components of Windows itself. Several users reported in online forums and on Reddit that updating to Windows 10 version 19045.6456 by installing KB5066791 ruined the computer, it’s very slow or some apps are missing.
Notepad.exe has been missing since I install KB5066791 Windows 10 version 19045.6456, it is not in my Recycle Bin, nor is it in System32.
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Missing Notepad on Windows 10
Well, with the latest Windows 10 version 22H2, Microsoft has made Notepad, MS Paint, and WordPad as optional components. And if your device is affected by installing KB5066791 and by the disappearance of these apps, here is how to get them back.
Add from the optional features
- Right-click on the Windows 10 start menu, select settings,
- Navigate to Apps, then select App & Features,
- Next, on the right, click the optional features link.
- From here, you can opt to reinstall any of the apps you need, to add/install an optional feature (Notepad or Paint), or click add a feature.
- Then search for the feature, checkmark on it, and click the install button.
- That’s it, this way you can install Notepad, MS Paint, or MS Word as well.
Check for corrupted system files
Still, need help. May the corrupted system file cause the issue? Let’s run the System File Checker utility which helps detect and replace corrupted system files with the correct ones.
- Open the command prompt as administrator,
- Click yes if UAC (User Account Control) asks for permission.
- On the command prompt window, type sfc /scannow and press the enter key on the keyboard
Let the scanning process complete 100%. Once done, restart your PC and check if this resolves apps not opening or missing problems on Windows 10.
Uninstall Windows 10 KB5066791
Also, you can uninstall Windows 10 KB5066791 and check if it helps. You can uninstall any Windows 10 update by following the steps below.
- Open settings using the Windows key + I
- Navigate to Update & Security then Windows Update.
- Here, click on View Update History
- Next, click on the ‘Uninstall update’ option, then in the Control Panel, select KB5066791 to highlight it and click on ‘Uninstall’
- Once done, restart your system when asked.
Also, you can remove Windows update KB5066791 using the Command Prompt as well.
- Open the command prompt as administrator,
- Type command wusa /uninstall /KB5066791/quiet /promptrestart and press enter key,
- Once done, save everything and restart your device.
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