The conceptQS Application Pool crashes on startup

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The conceptQS Application Pool crashes on startup with multiple errors entered into the Windows → Application event logs.

The error message may look like the below:

Log Name: Application
Source: Application Error
Event ID: 1000
Task Category: (100)
Level: Error
Keywords: Classic
User: N/A
Faulting application name: w3wp.exe, version: 8.0.9200.16384, time stamp: 0x50108835
Faulting module name: PerfMon64.dll, version: 8.0.10918.0, time stamp: 0x577fd168
Exception code: 0xc0000409
Fault offset: 0x0000000000149794
Faulting process id: 0x2c38
Faulting application start time: 0x01d24405d195eb6a
Faulting application path: c:\windows\system32\inetsrv\w3wp.exe
Faulting module path: C:\Program Files\Microsoft Monitoring Agent\Agent\APMDOTNETAgent\V8.0.10918.0\PerfMon64.dll

This issue can occur when the Microsoft Monitoring Agent is installed on the server. In order to resolve this issue, follow the steps below:

  1. Open the Control Panel
  2. Open Programs and Features
  3. Select the “Microsoft Monitoring Agent” and select “Remove“/”Uninstall
  4. Restart the server
  5. Test accessing the conceptQS application
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