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Resolving "Access Denied" Errors

Updated: April 21, 2010

Applies To: System Center Data Protection Manager 2010

"Access Denied" errors that occur while DPM is performing a task that involves communication with a protected computer often indicate a configuration problem on the computer. If you experience an "Access Denied" error in a task that involves communication with the computers, do the following:

  • Verify that the system time on the DPM server and the protected computer is synchronized with the system time on the domain controller.

  • On a computer running Windows Server 2003 SP2, verify that the DPM server is a member of the Distributed COM Users group and that the group has Distributed COM (DCOM) Launch and Access permissions for the file server.

To verify group membership on the file server

  1. In Computer Management, expand System Tools, expand Local Users and Groups, and then click Groups.

  2. In the Details pane, double-click the Distributed COM Users group.

  3. Verify that the computer account for the DPM server is a member of the group.

To verify DCOM Launch and Access permission on the file server

  1. In Administrative Tools, open Component Services.

  2. Expand Component Services, expand Computers, right-click My Computer, and then click Properties.

  3. On the COM Security tab, under Access Permissions, click Edit Limits.

  4. Verify that the Distributed COM Users group is allowed both Local Access and Remote Access permissions.

  5. On the COM Security tab, under Launch and Activation Permissions, click Edit Limits.

  6. Verify that the Distributed COM Users groups is allowed the following permissions:

    • Local Launch

    • Remote Launch

    • Local Activation

    • Remote Activation

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