This problem happens when the SEPM installer is unable to communicate with the LiveUpdate client on the computer through a Distributed Component Object Model (DCOM) call. The two most common reasons for this problem are:
The SEPM is not compatible with the version of the LiveUpdate client installed to the computer.
The DCOM configuration for the computer has been changed from the default settings.
Ensure the LiveUpdate client installed on the manager is the same version as the one included with the Symantec Endpoint Protection installation media. If it is, confirm your DCOM settings are configured to the defaults using the steps below:
Run dcomcnfg.exe as Administrator.
Expand Component Services > Computers.
Right-click My Computer and click Properties > Default Properties.
Ensure Enable Distributed COM on this computer is checked.
Ensure Default Impersonation Level is set to Identify.
Click Com Security.
Click Edit Default in the Access Permissions section.
Ensure Local Access is allowed for both the System and Administrator accounts.
If Interactive is listed, ensure it is also configured to allow Local Access, click OK.
Click Edit Default in the Launch and activation Permissions section.
Ensure the Administrators, Interactive, and System accounts are set to Allow Access, click OK.
Click OK to close dcomcnfg.exe.
Restart the computer for the changes to take effect.
If the above steps still don't resolve the issue remove LiveUpdate from the server and then attempt the upgrade. The upgrade process will install the latest version of LiveUpdate that comes with Endpoint Protection.
Imported Document ID: TECH170764
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