SCOM 2019 UR2 Rest API

Question

HI,

I am tyrinng to send alerts + metrics from my SCOM instance into a global console.
I was trying to call my SCOM instance using a REST API Call.

But, I am receiving the following error message:

Invoke-RestMethod : {"errorMessage":"The underlying connection was closed: An unexpected error occurred on a send.","errorTrace":" at System.Net.HttpWebRequest.GetResponse()\r\n at
Microsoft.EnterpriseManagement.OMDataService.Service.Impl.AuthenticationService.InitializeIntegratedMonitoringViewCache(String sessionId, String authmode, String encodedCredentials)\r\n
at Microsoft.EnterpriseManagement.OMDataService.Service.Impl.AuthenticationService.Authenticate(String encodedCredentials)\r\n at
Microsoft.EnterpriseManagement.OMDataService.Controllers.AuthenticationController.Login(String credentials)\r\n at lambda_method(Closure , Object , Object[] )\r\n at
System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.c__DisplayClass10.b__9(Object instance, Object[] methodParameters)\r\n at
System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.Execute(Object instance, Object[] arguments)\r\n at
System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ExecuteAsync(HttpControllerContext controllerContext, IDictionary`2 arguments, CancellationToken cancellationToken)\r\n--- End of
stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Web.Http.Controllers.ApiControllerActionInvoker.d__0.MoveNext()\r\n--- End of
stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Web.Http.Filters.ActionFilterAttribute.d__5.MoveNext()\r\n--- End of stack
trace from previous location where exception was thrown ---\r\n at System.Web.Http.Filters.ActionFilterAttribute.d__5.MoveNext()\r\n--- End of stack trace from previous location where
exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Web.Http.Filters.ActionFilterAttribute.d__0.MoveNext()\r\n--- End of stack
trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Web.Http.Controllers.ActionFilterResult.d__2.MoveNext()\r\n--- End of stack
trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Web.Http.Controllers.ExceptionFilterResult.d__0.MoveNext()"}
At line:12 char:9

• $auth = Invoke-RestMethod -Method POST -Uri $uriBase -Headers $scomhe ...
• ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
• CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-RestMethod], WebException
• FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeRestMethodCommand

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I am using the following powershell:

$scomHeaders = New-Object "System.Collections.Generic.Dictionary[[String],[String]]"
$scomHeaders.Add('Content-Type','application/json; charset=utf-8')

$bodyraw = "Windows"
$Bytes = [System.Text.Encoding]::UTF8.GetBytes($bodyraw)
$EncodedText =[Convert]::ToBase64String($Bytes)
$jsonbody = $EncodedText | ConvertTo-Json

$uriBase = 'https://{my scom console name}/operationsmanager/authenticate'

$cred = Get-Credential
$auth = Invoke-RestMethod -Method POST -Uri $uriBase -Headers $scomheaders -body $jsonbody -Credential $cred -SessionVariable websession

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Is the URL which I am calling correct?

Do I need to initialize the CSRF token anywere?

Thanks

Answer 1

Hi @George Christianis ,
It is all because TLS, TLS 1.1 and TLS 1.2 not allowed in the server, Which is why the command failed, To resolve the issue, do the following,
Open the Command prompt and run the below command,

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12  

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