ThinkServer Configurator may show an error saying the connection has lost when a it's own timeout expires without being able to connect with the ThinkServer service. This behaviour is normal because ThinkServer Configurator has a 120 seconds timeout by default.
The 120 seconds timeout may change to 5 seconds unexpectedly after applying a new hotfix or simply by a server restart. The aforementioned situation will cause an immediate ThinkServer Configurator disconnection from the service, making it impossible to edit/create/browse monitors.
The image below illustrates the error:
The problem could be solved in either two ways:
Editing ThinkServer Configurator settings
Editing the .xml file which contains the desired timeout value
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