Walid Hegazy

How To Do :) IT


2 Comments

SCCM 2012 Client Push fail with error code 0x800706ba

when pushing the SCCM clients behind fire wall you may get this error:

CWmi::Connect(): ConnectServer(Namespace) failed. – 0x800706ba

This error is  because the SCCM Client uses Dynamic RPC connections for WMI (the DCOM RPC uses callback for the event receipt which chooses random ports 1024-65534.)

you need to open the following ports :

Description

UDP

TCP

Server Message Block (SMB) between the site server and client computer.

 

445

RPC endpoint mapper between the site server and the client computer.

 

135

135

RPC dynamic ports between the site server and the client computer.

 

DYNAMIC

Hypertext Transfer Protocol (HTTP) from the client computer to a management point when the connection is over HTTP.

 

80

 

Secure Hypertext Transfer Protocol (HTTPS) from the client computer to a management point when the connection is over HTTPS.

443

 

check  this …Windows Firewall and Port Settings for Client Computers in Configuration Manager

sooooo you need to open the Dynamic ports on the firewall 1024-65534 which  is not very good idea …. since you only need them for client push you can coordinate with you security admin to open them on branch per branch or subnet by subnet basis for a day or so and close these ports again as soon as you finish pushing your client “at least this is how it worked for me Smile

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