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Hi hope you can help! I'm trying to view tape management reports in DPM 2012, every time i click on view i get an error saying that the mmc has stopped working. When i look in the event viewer i can see this The description for Event ID 999 from source MSDPM cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer. If the event originated on another computer, the display information had to be saved with the event. T he following information was included with the event: An unexpected error caused a failure for process 'mmc'. Restart the DPM process 'mmc'. Problem Details: <FatalServiceError><__System><ID>19</ID><Seq>0</Seq><TimeCreated>05/03/2015 11:34:13</TimeCreated><Source>DpmThreadPool.cs</Source><Line>163</Line><HasError>True</HasError></__System><ExceptionType>InvalidCastException</ExceptionType><ExceptionMessage>Specified cast is not valid.</ExceptionMessage><ExceptionDetails>System.InvalidC astException: Specified cast is not valid. at Microsoft.Internal.EnterpriseStorage.Dls.UI.Librar y.Reporting.Reporter.GetDPSInstallTime() at Microsoft.Internal.EnterpriseStorage.Dls.UI.Report ingPage.ViewReport..ctor(Report report, Boolean flagNewReport) at Microsoft.Internal.EnterpriseStorage.Dls.UI.Report ingPage.Reporting.OpenViewReportForm(Boolean flagNewReport) at Microsoft.Internal.EnterpriseStorage.Dls.UI.Report ingPage.Reporting.OnSavedReportsClick(Object sender, EventArgs eventArgs) at System.Windows.Forms.LinkLabel.OnMouseUp(MouseEven tArgs e) at System.Windows.Forms.Control.WmMouseUp(Message&amp ; m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.Label.WndProc(Message& m) at Microsoft.Internal.EnterpriseStorage.UI.CommonCont rols.DetailsPassthroughLabel.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)</ExceptionDetails></FatalServiceError> 　 the message resource is present but the message is not found in the string/message table I've restarted the server, I've checked all services and their dependencies, I've logged in as another user to see if it the error was limited to just one user, but its happening with all users. I'm pretty new to DPM, so just wondered if anyone has had the same issue before and could help thanks in advance Vicky Tofield IT technician sir Christopher hatton academy

I just stood up a SCDPM 2012 SP1 server and I am having an issue pushing an agent. I suspect that it is a firewall issue in the datacenter, between different subnets, but I am trying to verify that. I have been using a helpful guide that I found http://blogs.technet.com/b/dpm/archive/2012/02/06/data-protection-manager-agent-network-troubleshooting.aspx . I seem to be OK going from the DPM server to the computer I want to protect, but there seems to be an error communicating back. Should I have a successful WBEMTEST going from the protected server to the DPM server? That part fails. I pre-installed the agent to try and see if that was the issue, but it's still not working. ------------------------------------------------------------- Event Logs: On the DPM server: 1)In the DPM Alerts application Windows log - The agent operation failed because the DPM Agent Coordinator service on <to be protected server> did not respond: (ID: 324) 2)In the DPM console I get - Error - the protection agent operation on <to be protected server> failed because the servcie did not respond. One of the recommended actions is to look at the log on the protected server. On the protected server: 1)In the System logs - DCOM was unable to communicate with the computer <DPM server> using any of the configured protocols. --------------------------------------------------------------------------- Here is the firewall request I put through... does this communication look correct? Source: DPM / Target: Protected / Port TCP 135 Source: Protected / Target: DPM / Port RPC Dynamic 1024-65535 Allow bi-directional communication between the source DPM server to the target server on 5718/TCP, 5719/TCP, 445/TCP Let me know if I can provide anymore information