Hi fg,
This is what I've got just a few minutes ago after booting a VM
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On Jan 24, 2023, W.U. downloaded and updated Windows security with this KB5007651 (Version 1.0.2301.24001).
After this update the security icon on the system tray showed a yellow warning triangle, and then the icon completely disappeared after a reboot.
No way to get the icon back on the System Tray. 🤷♂️
I can still open security if I search for it in settings, but there is no apparent reason for the shortcut on the system tray to be missing.
It looks like starting with Build 25272 the windows security updates are messed up and out of sync with the currently installed windows Build.
I could reproduce the same issue restoring a backup of Build 25281 and then going through W.U. checking for updates, the same scenario repeated again.
Right after the update shows yellow warning on security icon:
Everything green here, but Firewall & network protection is missing, that may be the reason for the yellow warning.
Missing Security icon from System Tray after a reboot:
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The problem started back with Build 25272 when it updated security with KB5007651 (Version 1.0.2301.7001) which changed the security version to 25276.
Now KB5007651 (Version 1.0.2301.24001) is bringing the security version to 25285 and clearly it is no longer compatible with Windows Build 25281.
It is the same mess that they created months ago with Build 22621.
Same issue on a second machine after this KB5007651 (Version 1.0.2301.24001). 😜🤷♂️