SCCM client push connection issue

Question

A client is failing to install the SCCM agent. The ccm log file on the server indicates a connection issue:

Unable to connect to remote machine xxx using Kerberos with alternate account, error - 0x800706ba.
Unable to connect to WMI on remote machine xxx, error - 0x800706ba.

All devices are in the same OU and receiving the same GPOs. What steps can be taken to troubleshoot why this one OS is failing?

Answer 1

Hi, @Richard Sindler

Thank you for posting in Microsoft Q&A forum.

The error 0x800706ba indicates that SCCM site server was unable to establish a connection with client over RPC ports. This may happen due to below reasons:

The RPC port 135 / Dynamic Ports are not opened between SCCM site server and client.

The firewall application installed on client machine is blocking inbound traffic over RPC ports.

We have to ensure that all the ports required for ConfigMgr Client Push deployment method are opened in network firewalls.

Server Message Block (SMB) TCP Port 445.

Remote Procedure Call (RPC) – TCP & UDP Port 135.

Remote Procedure Call (RPC) Dynamic ports ( TCP 1024-5000, TCP 49152-65535)

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