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ConfigWinRM.ps1

@@ -3,7 +3,7 @@
 
 <#PSScriptInfo
 
-.VERSION 1.01
+.VERSION 1.02
 
 .GUID 14e0e777-6ba8-4f3f-b914-53c62e0a72aa
 
@@ -41,6 +41,8 @@
         Updated by David Norman <david@dkn.email>
   Version 1.01 - Fixed issue with HTTPS when certificate in HTTPS listener doesn't match the cert in local store
         Updated by Michal Horák
+  Verison 1.02 - Fixed issue when script fails on removing listeners if only HTTP listener exists (no HTTPS listener exists)
+        Updated by Michal Horák
 #> 
 
 <#
@@ -647,8 +649,13 @@ if (-not $MyError -and ($RunningConfig.WinRMListeners | Where-Object { $_.Transp
       Write-MyLog -LOGSeverity "INFO" -LOGMessage ("Removing existing WinRM HTTPS listener")
       try 
       {
-        Remove-WSManInstance -ResourceURI 'winrm/config/Listener' -SelectorSet $selectorset
+        $existingHttpsListener = $RunningConfig.WinRMListeners | Where-Object { $_.Transport -eq "HTTPS" }
-        Write-MyLog -LOGSeverity "INFO" -LOGMessage ("WinRM SSL listener removed.")        
+        if ($existingHttpsListener) {
+          Remove-WSManInstance -ResourceURI 'winrm/config/Listener' -SelectorSet $selectorset
+          Write-MyLog -LOGSeverity "INFO" -LOGMessage ("WinRM SSL listener removed.")        
+        } else {
+          Write-MyLog -LOGSeverity "INFO" -LOGMessage ("No WinRM HTTPS listener exists, nothing to remove.")
+        }
       } catch 
       {
         Write-MyLog -LOGSeverity "ERROR" -LOGMessage ("Can't remove WinRM HTTPS listener. !!!")
@@ -674,6 +681,9 @@ if (-not $MyError -and ($RunningConfig.WinRMListeners | Where-Object { $_.Transp
 #--------------------------------------------------------------------------------------------------
   if (-not $MyError -and -not ($RunningConfig.WinRMListeners | Where-Object { $_.Transport -eq "HTTPS" } ) -and $CFG.WINRMHTTPS.ToLower() -eq "enable")
   {
+    # Check for existing HTTPS listener before creating certificate
+  $existingHttpsListener = Get-WSManInstance -ResourceURI winrm/config/listener -Enumerate | Where-Object { $_.Transport -eq "HTTPS" }
+  if (-not $existingHttpsListener) {
     Write-MyLog -LOGSeverity "INFO" -LOGMessage ("Creating new WinRM HTTPS listener.")
     try 
     {
@@ -707,6 +717,9 @@ if (-not $MyError -and ($RunningConfig.WinRMListeners | Where-Object { $_.Transp
         $MyError = $true        
       }
     }
+  } else {
+    Write-MyLog -LOGSeverity "INFO" -LOGMessage ("WinRM HTTPS listener already exists, skipping creation and certificate issuance.")
+  }
   }
 #--------------------------------------------------------------------------------------------------
   if (-not $MyError -and $RunningConfig.WinRMListeners)