Hi,
1,Anything useful in wuahandler.log? What version of Windows 11 you are deploying, Windows 11 21H2 or 22h2? If it's Windows 11 22H2, please upgrade to the latest SCCM version 2207 or 2211 to have a try.
2,Please make sure you have added the boundary to your boundary groups and associated your DPs and MPs to the boundary groups.
Similar thread for your reference, the issue is due to access privileges.
SOLVED FAILED TO GET TARGETED UPDATE ERROR = 0X87D00215
Thanks for your time. Have a nice day!
Best regards,
Simon
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