Explanation:

Mi-Enterprise Middleware installs a service called “Mi-Enterprise Middleware Monitor” which by default accesses the default customer (CID=”") so that IIS will re-initialize the Mi-Enterprise Middleware web application if the web.config file gets updated during configuration and use of Mi-Enterprise Middleware.

Solution:

Configure Mi-Enterprise Middleware Monitor or remove the name of one of the customer accounts. To configure Mi-Enterprise Middleware Monitor, open “MFServerMonitor.conf” (typically found in c:\Program Files\Mi-Co\Mi-Forms Server 6\) and edit the following line:
<pref name=”CID” value=”" />
by inserting the name of a customer into the value, ie:
<pref name=”CID” value=”Customer 1″ />