Overview

After installing MailEssentials or MailSecurity on a WebMonitor machine, the WebMonitor MSMQ queues are not processed anymore. The WebMonitor reporting stops working and after a while, the mail flow will stop.

Under Computer Management > Services and Applications > Message Queuing > Private Queues, you will find a very high number of items under gfiwonmidqueue@*.

'Access Monitoring' in the GUI (graphic user interface) does not show any current data. The DBCore.log file will contain the following error:

Type mismatch. (Exception from HRESULT: 0x80020005 (DISP_E_TYPEMISMATCH))

Resolution

1. Navigate to Start > Run > cmd.
2. Go to the WebMonitor installation folder.
3. Run regsvr32.exe MiddleMan.dll.