Update for Windows Security Platform

KB5007651 is the Windows Security platform update for Windows 11. If it keeps failing, try these steps:

1. Confirm Windows 11 build and app version
   • KB5007651 applies only to Windows 11 build 22000 or later.
   • Open PowerShell as administrator and run:

          Get-AppPackage Microsoft.SecHealthUI
     

   • Verify that the Windows Security app is present and that the OS is Windows 11 (build 22000+). If not, install the latest cumulative updates for Windows 11 first, then retry KB5007651.
2. Let Windows Update install it automatically
   • KB5007651 is offered via Windows Update as a “Definition Updates” item in the “Microsoft Security platform” category and is also available to WSUS.
   • Go to Settings → Windows Update and select “Check for updates” so the platform update is pulled and installed as part of normal updating.
3. Install the platform update manually
   • Download the installer for the correct architecture:
     • 64-bit: securityhealthsetup_1528aebc5e90a333bf0f8a3f0d98b458311581fa.exe
     • ARM64: securityhealthsetup_2e7aca853436ee85bf95413aa3471540212da972.exe
   • Right‑click the downloaded file and select “Run as administrator”.
   • Restart the device after installation, then re-open Windows Security to confirm it works.
4. Re-check Windows Security versions
   • Run again:

          Get-AppPackage Microsoft.SecHealthUI
     

   • Confirm that:
     • Windows Security application version is updated (for example, 1000.27840.0.1000 or later as documented).
     • Windows Security platform version is updated (for example, 10.0.27840.1000 or later as documented).

If the update still fails after manual installation, install all pending Windows cumulative/servicing stack updates first, reboot, and then retry the KB5007651 installer as administrator.

References:

• Windows Security app update