• In the Windows taskbar, click on "Start" and then "Run...".
• Enter "DCOMCnfg" in the selection field.

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• In the "Console Root", click on "Component Services > Computers > My Computer".
• Open the properties window by right-clicking on "My Computer" in the project tree and then selecting "Properties" in the pop-up menu.

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• Press the "Standard Properties" tab and activate the "DCOM" selection box.
• Set the default authentication level to "Default" and the default impersonation level to "Identify".

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• Change to the COM security tab and press the "Edit limits..." tab of access authorization.
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  If the "Edits limits..." tab is inactive, then the access rights are contained in the local security policies.
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  Remedy:
  • In the control panel, click on "Local security policy" under "Administrative Tools".
  • Now go to "Security settings > Local policies > Security options" and open the policies for "DCOM: Machine Access Restrictions in Security Descriptor Definition Language (SDDL) syntax".
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    If you delete groups or user names for general security reasons, this might impair the function of software components already installed.
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  • Click on "Edit security..." and delete all group and user names.
  • Close all dialogs with "OK" and close the local security settings.

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Defining access authorization

• Add the listed group and user names in Table 01 and activate the "Remote access".
• Close the window with "OK".

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The user groups "MACHINE\Administrators" and "Everyone" are in the Windows XP with Service Pack 2 as a default.

• Add the listed group and user names in Table 02.
• Activate all access rights, including "Remote start" and "Remote activation", for all users and user groups.
• Close the dialog box with "OK". 
• Close the properties window of "My Computer" with "OK".

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