Windows Security Stuck on Sheild Icon

[Windows 11]

Hiya, I've been having issues with Windows Security on Windows 11 when trying to load it it's getting stuck in the shield for a few moments then closing. It also isn't opening on start up (showing in the system tray like it should do). I've tried steps from several of the other posts about this type of issue yesterday evening but non of them have worked and I can't recall all of the ones I tried. Please could someone help? My PC has installed the "Update for Windows Security platform - KB5007651 (Version 10.0.27703.1006)" today and it has still not resolved the issue.

Continue reading...