Unable to see application after adding APM Insight .NET agent and getting "Failed to Load Profiler" error

Unable to see application after adding APM Insight .NET agent and getting "Failed to Load Profiler" error

The following are few reasons that might pose an interference with the APM Insight .NET agent profiling:  
            1. User Permission settings
            2. Competing profilers/monitoring services

If the installation is not done with administrative privileges, the following error might be printed on event logs,

 Loading profiler failed. The profiler COM object was instantiated, but the profiler failed during its initialization callback.  
 Profiler CLSID: '{989D151B-3F31-482E-926F-2E95D274BD36}'.  HRESULT: 0x80004005.

In such cases, Health monitor tool will show the message, 

  Profiler loaded for 0 out of -- process 

If you have installed other monitoring services, stop/uninstall them and perform the following steps:

  1. Uninstall the current version of .NET agent from the server
  2. Download the latest .NET agent here.
  3. Launch command prompt in administrative mode  on the server and install the msi from this command prompt by using the following command :       
 msiexec /i apminsight-dotnetagent.msi (or the respective msi)
  1. When prompted, enter your license key and make sure all required applications are selected from App filter tab of the configuration dialog.  
  2. Once the installation is complete and the service is started, you can start performing the desired transactions.