After update windows defender is not working

[Windows 11]

Hi, my windows defender upon updating yesterday actually stopped working? Basically yesterrday I updated my computer, and when I opened it I opened windows defender for an quick scan (it usually finds nothing as I use malwarebytes too) I'm paranoid if you couldn't tell, when I opened it it was just stuck on its logo then closed when I waited there? Please respond / help me as quick as yo ucan, as I'm scared and can't afford another computer.

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