Microsoft has released the security update KB5034122 for Windows 10 22H2.
However, some users report that they meet the KB5034122 fails to download and install issue.
This post fromMiniToolanalyzes the issue and provides methods.

KB5034122 is a mandatory Windows 10 cumulative update containing the January 2024 Patch Tuesday security updates.
The following is the related forum.
Press theWindows+Ikeys together to openSettings.

Go toUpdate & Security>Troubleshoot>Additional troubleshooters.
ClickWindows Updateunder theGet up and runningsection and then clickRun the troubleshooter.
Here is how to do that:
1.

TypeWindows Securityin theSearchbox and clickOpen.
Click theVirus & threat protectiontab and click theManage settingsbutton.
Turn off theReal-time protectionandCloud-delivered protectiontoggle.

This can help eliminate software conflicts that occur when installing a Windows update.
Press theWindows+Rkeys together to open theRundialogue box.
Typemsconfigin it, and clickOK.
Then go to theServicestab.
Check theHide All Microsoft Servicesbox.
Now, click theDisable allbutton, and clickApplyto save the change.
Go to theStartuptab and clickOpen Task Manager.
In theTask Managertab, choose the first enabled utility and clickDisable.
Here you should probably disable all enabled applications one by one.
After disabling all programs, closeTask Managerand clickOK.
Open your web app and go to theMicrosoft Update Catalogofficial website.
Choose the suitable edition based on your system and clickDownload.
This backup software offers a Trial Edition that allows a 30-day free trial for all backup features.
Now, after trying these methods above, you should easily get rid of the issue.