Microsoft stops pushing KB5007651 update to Win11: Confirmed that there is a local security agency protection error issue

Microsoft released the KB5007651 update for Windows Defender in March this year, which will force users to install it.

However, some users reported that after installing the update, Windows Security displayed "Local Security authority protection is off. Your device may be vulnerable" (Local Security authority protection is off. Your device may be vulnerable) .

Our little classroom: LSA contains the Local Security Authority Server Service (LSASS) process, which can authenticate users for local and remote logins and enforce local security policies.

Windows 8.1 operating systems and later provide additional protection for LSA to prevent unprotected processes from reading memory and injecting code. This feature provides greater security for the credentials stored and managed by LSA.

Microsoft currently acknowledges these problems and has suspended the push of KB5007651 to users. Updates will be resumed after the problem is resolved.

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