Installing DPM 2012 agent - error 4 and error 346 RRS feed

  • Question

  • I'm unable to install the DPM 2012 agent on a target computer in a different forest. I've been able to handle others in the target forest - just this one particular host is a problem.

    I installed the DPM agent locally by following the suggested guidelines of doing so from a cmd prompt and passing in the FQDN of the DPM server as a parameter.  Installation completes successfully but I don't see this host on the DPM console.  If I attempt to attach the target server from DPM, I immediately get Error 346 re: the inability to retrieve the configuration information.

    From the DPM server's System log, I also get error 4 re: KRB_AP_ERR_MODIFIED.

    The one thing of note is this:

    • DPM is let's say:
    • Inside, I am already protecting let's say
    • The target computer I am having problems with is  That is, while they are in different domains, the server I'm having a problem with has an identical hostname to a SQL server already being protected.

    Error 4 has description stating: "If the server name is not fully qualified, and the target domain ( is different from the client domain (, check if there are identically named server accounts in these two domains, or use the FQDN to identify the server".

    However, I am using FQDN.  Also there are no firewalls in between the 2 forests and the 2-way trusts exist as I am already protecting computers, cross-forest. 

    Has anyone come across this before?

    • Edited by Dave-LVP Friday, November 15, 2013 2:18 PM There was a typo in my post.
    Wednesday, November 13, 2013 5:18 PM

All replies

  • Hello.
    I have the same problem (Error 346) and I have verified that the problem is related to the computers having the same "name", but different FQDN.

    Did you get any solution for this?

    Best Regards


    Thursday, June 5, 2014 6:09 PM
  • Peter,

    Nice work. You helped solved my issue which I've been investigating for two days.

    My company has 2 domains that we are trying to consolidate into one. I need to install the agent on a server in the domain we are trying to decommission so that I can back it up to tape (the server is being decommissioned as well). I was unable to get the DPM 2012 agent to install on a server in the old domain (trusted domain "B") because trusted domain "A" had a DNS record (CNAME) that was named the same as the hostname of the server I was attempting to install the agent on. I temporarily removed the DNS record and the agent installed successfully.

    Wednesday, June 25, 2014 4:24 AM