Hi,
Thanks for posting in Microsoft MECM Q&A forum.
1,The error 0x80072f8f means "A security error occurred". We can try to see if the manual installation works on these 2 devices. If yes, please check if any antivirus or security software is blocking the communication between the server and client.
2,Please check your boundaries and boundary groups configurations, and associate your MPs and DPs to the boundary groups. Make sure the client can communicate with the MPs and DPs.
3,Please review the ccm.log and ccmsetup.log to see if there is any further information. For more detailed troubleshooting steps, please refer to the helpful article:
Troubleshooting SCCM ..Part I (Client Push Installation )
Thanks for your time. Have a nice day!
Best regards,
Simon
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