CB Protection: API Failure due to Error "Microsoft.EnterpriseManagement.OperationsManager.Apm.DataCollecting.Producers.Mvc.4.0"

Products

• Carbon Black App Control (formerly Cb Protection)

Issue/Introduction

• API errors in the console.
• PHP.log shows the following error:

"[30-Apr-2020 10:09:31 EDT] API Error from page /home.php: GET /api/bit9platform/v1/serverConfig/ with params {"q":"name:UM_Mode"} with options {"81":0,"64":0,"19913":1,"42":0,"156":61000,"10023":"[removed from logging]","10022":"[removed from logging]","10015":"[removed from logging]"} returned http code 500 and result {
"Message": "An error has occurred.",
"ExceptionMessage": "Could not load file or assembly 'Microsoft.EnterpriseManagement.OperationsManager.Apm.DataCollecting.Producers.Mvc.4.0, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.",
"ExceptionType": "System.IO.FileNotFoundException",
"StackTrace": " at System.Web.Http.Dispatcher.DefaultHttpControllerSelector.SelectController(HttpRequestMessage request)\r\n at System.Web.Http.Tracing.Tracers.HttpControllerSelectorTracer.<>c__DisplayClass3.<System.Web.Http.Dispatcher.IHttpControllerSelector.SelectController>b__1()\r\n at System.Web.Http.Tracing.ITraceWriterExtensions.TraceBeginEnd(ITraceWriter traceWriter, HttpRequestMessage request, String category, TraceLevel level, String operatorName, String operationName, Action`1 beginTrace, Action execute, Action`1 endTrace, Action`1 errorTrace)\r\n at System.Web.Http.Tracing.Tracers.HttpControllerSelectorTracer.System.Web.Http.Dispatcher.IHttpControllerSelector.SelectController(HttpRequestMessage request)\r\n at System.Web.Http.Dispatcher.HttpControllerDispatcher.<SendAsync>d__1.MoveNext()"
} in 1.1018590927124 seconds"

Environment

• CB Protection Server: 8.x

Cause

Microsoft Monitoring Agent being installed which overwrites IIS settings/dependencies.

Resolution

• Uninstall Microsoft Monitoring Agent.
• Reboot