Error: "Failed to establish a COM connection" when attempting to connect to a LAC/E32 - WKB656

SYMPTOMS

Error Message: "Failed to establish a COM connection" when attempting to connect to a LAC/E³² or Acquisition client from a remote Empower client

ENVIRONMENT

Empower Enterprise or Workgroup

CAUSE

The watersservice on the LAC/E³² is not started and running.

The LAC/E³² is not connected to network infrastructure

The LAC/E³² is in Recovery process and is not connected to the network

DCOM port 135 is blocked by a firewall

The LAC/E32 is not visible on the domain. To verify, go to add a node in Configure the System to see if the LAC/E32 is showing in the node list. If it is not, the customer needs to confirm that the LAC/E32 has been added properly into the same domain as Empower.

The LAC/E³² is switched off.

FIX or WORKAROUND

Turn on and/or restart the watersservice on the LAC/E32.

Add DCOM port 135 in the exception list of the firewall.

ADDITIONAL INFORMATION

If the LAC/E³² was added into a new domain, remove and add the LAC/E³² node from and into Empower using Configuration Manager as an admin.

ACQUITY SQD and TQD are not supported on a LAC/E³² with the watersservice enabled.

ACQUITY QDa is supported on a LAC/E32 with the watersservice enabled. (The watersservice must be disabled temporarily in order to access the Tune Page.)