diff --git a/CHANGELOG.md b/CHANGELOG.md
index e68a75731..87895f467 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -151,6 +151,9 @@
   - Changes to integration tests
     - CONN feature was temporarily removed from the instances installed by the
       integration tests. This is due to issue #1105.
+  - For SQL Server 2017 when installing feature CONN, and CONN already exist, the
+    feature CONN was no longer detected. Now CONN is forcibly installed even if
+    it already is installed ([issue #1105](https://github.com/PowerShell/SqlServerDsc/issues/1105)).
 
 ## 12.0.0.0
 
diff --git a/DSCResources/MSFT_SqlSetup/MSFT_SqlSetup.psm1 b/DSCResources/MSFT_SqlSetup/MSFT_SqlSetup.psm1
index 7644d540e..41ad0b9b2 100644
--- a/DSCResources/MSFT_SqlSetup/MSFT_SqlSetup.psm1
+++ b/DSCResources/MSFT_SqlSetup/MSFT_SqlSetup.psm1
@@ -1078,7 +1078,12 @@ function Set-TargetResource
             New-InvalidOperationException -Message $errorMessage
         }
 
-        if (-not ($getTargetResourceResult.Features.Contains($feature)))
+        <#
+            Need to override 'CONN' on SQL Server 2017 if already installed.
+            See issue #1105 for more information.
+        #>
+        if (($feature -eq 'CONN' -and $sqlVersion -in ('14')) `
+            -or (-not ($getTargetResourceResult.Features.Contains($feature))))
         {
             $featuresToInstall += "$feature,"
         }
diff --git a/Tests/Unit/MSFT_SqlSetup.Tests.ps1 b/Tests/Unit/MSFT_SqlSetup.Tests.ps1
index e2b4bcf12..8ea2e86a9 100644
--- a/Tests/Unit/MSFT_SqlSetup.Tests.ps1
+++ b/Tests/Unit/MSFT_SqlSetup.Tests.ps1
@@ -3112,6 +3112,77 @@ try
                     }
                 }
 
+                # Regression test for issue #1105
+                Context "When SQL Server version is $mockSqlMajorVersion and feature 'CONN' is already installed" {
+                    BeforeEach {
+                        Mock -CommandName Get-TargetResource -MockWith {
+                            return @{
+                                Features = 'CONN'
+                            }
+                        }
+
+                        Mock -CommandName New-SmbMapping -Verifiable
+                        Mock -CommandName Remove-SmbMapping -Verifiable
+                        Mock -CommandName Copy-ItemWithRobocopy -Verifiable
+                        Mock -CommandName Get-TemporaryFolder -MockWith $mockGetTemporaryFolder -Verifiable
+                        Mock -CommandName New-Guid -MockWith $mockNewGuid -Verifiable
+                        Mock -CommandName Get-Service -MockWith $mockEmptyHashtable -Verifiable
+
+                        Mock -CommandName Get-ItemProperty -ParameterFilter {
+                            $Path -eq (Join-Path -Path $mockRegistryUninstallProductsPath -ChildPath $mockSqlServerManagementStudio2008R2_ProductIdentifyingNumber) -or
+                            $Path -eq (Join-Path -Path $mockRegistryUninstallProductsPath -ChildPath $mockSqlServerManagementStudio2012_ProductIdentifyingNumber) -or
+                            $Path -eq (Join-Path -Path $mockRegistryUninstallProductsPath -ChildPath $mockSqlServerManagementStudio2014_ProductIdentifyingNumber) -or
+                            $Path -eq (Join-Path -Path $mockRegistryUninstallProductsPath -ChildPath $mockSqlServerManagementStudioAdvanced2008R2_ProductIdentifyingNumber) -or
+                            $Path -eq (Join-Path -Path $mockRegistryUninstallProductsPath -ChildPath $mockSqlServerManagementStudioAdvanced2012_ProductIdentifyingNumber) -or
+                            $Path -eq (Join-Path -Path $mockRegistryUninstallProductsPath -ChildPath $mockSqlServerManagementStudioAdvanced2014_ProductIdentifyingNumber)
+                        } -MockWith $mockEmptyHashtable -Verifiable
+
+                        Mock -CommandName Get-CimInstance -MockWith $mockEmptyHashtable -Verifiable
+                    }
+
+                    It 'Should set the system in the desired state when feature is SQLENGINE' {
+                        $testParameters = $mockDefaultParameters.Clone()
+                        $testParameters['Features'] = 'SQLENGINE,CONN'
+                        $testParameters += @{
+                            InstanceName = $mockDefaultInstance_InstanceName
+                            SourcePath = $mockSourcePath
+                            SQLSysAdminAccounts = 'COMPANY\User1','COMPANY\SQLAdmins'
+                        }
+
+                        # Regression testing of issue #1105.
+                        if ($mockSqlMajorVersion -in (14))
+                        {
+                            <#
+                                CONN is already installed, but since it is the
+                                SQL Server 2017 version, CONN is forcibly added
+                                to the setup Features argument.
+                            #>
+                            $mockExpectedFeatures = $testParameters.Features
+                        }
+                        else
+                        {
+                            <#
+                                CONN is already installed, so that should not be
+                                installed, so it is not added to the setup Features
+                                argument.
+                            #>
+                            $mockExpectedFeatures = $testParameters.Features -replace ',CONN'
+                        }
+
+                        $mockStartSqlSetupProcessExpectedArgument = @{
+                            Quiet = 'True'
+                            IAcceptSQLServerLicenseTerms = 'True'
+                            Action = 'Install'
+                            InstanceName = 'MSSQLSERVER'
+                            Features = $mockExpectedFeatures
+                            SQLSysAdminAccounts = 'COMPANY\sqladmin COMPANY\SQLAdmins COMPANY\User1'
+                            AGTSVCSTARTUPTYPE = 'Automatic'
+                        }
+
+                        { Set-TargetResource @testParameters } | Should -Not -Throw
+                    }
+                }
+
                 Context "When SQL Server version is $mockSqlMajorVersion and the system is not in the desired state for a default instance" {
                     BeforeEach {
                         Mock -CommandName New-SmbMapping -Verifiable