diff --git a/eng/Versions.props b/eng/Versions.props
index 8e634804ad6..2f588dda9d6 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -2,7 +2,7 @@
 <!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the MIT license. See License.txt in the project root for full license information. -->
 <Project>
   <PropertyGroup>
-    <VersionPrefix>16.10.0</VersionPrefix><DotNetFinalVersionKind>release</DotNetFinalVersionKind>
+    <VersionPrefix>16.10.1</VersionPrefix><DotNetFinalVersionKind>release</DotNetFinalVersionKind>
     <AssemblyVersion>15.1.0.0</AssemblyVersion>
     <PreReleaseVersionLabel>preview</PreReleaseVersionLabel>
     <DotNetUseShippingVersions>true</DotNetUseShippingVersions>
diff --git a/src/Build.UnitTests/Construction/SolutionProjectGenerator_Tests.cs b/src/Build.UnitTests/Construction/SolutionProjectGenerator_Tests.cs
index 5d536380d86..b75fa9b28be 100644
--- a/src/Build.UnitTests/Construction/SolutionProjectGenerator_Tests.cs
+++ b/src/Build.UnitTests/Construction/SolutionProjectGenerator_Tests.cs
@@ -175,6 +175,46 @@ public void SolutionFilterFiltersProjects()
             }
         }
 
+        [Fact]
+        public void BuildProjectAsTarget()
+        {
+            using (TestEnvironment testEnvironment = TestEnvironment.Create())
+            {
+                TransientTestFolder folder = testEnvironment.CreateFolder(createFolder: true);
+                TransientTestFolder classLibFolder = testEnvironment.CreateFolder(Path.Combine(folder.Path, "classlib"), createFolder: true);
+                TransientTestFile classLibrary = testEnvironment.CreateFile(classLibFolder, "classlib.csproj",
+                    @"<Project>
+                  <Target Name=""ClassLibraryTarget"">
+                      <Message Text=""ClassLibraryBuilt""/>
+                  </Target>
+                  </Project>
+                    ");
+
+                TransientTestFolder simpleProjectFolder = testEnvironment.CreateFolder(Path.Combine(folder.Path, "simpleProject"), createFolder: true);
+                TransientTestFile simpleProject = testEnvironment.CreateFile(simpleProjectFolder, "simpleProject.csproj",
+                    @"<Project>
+                  <Target Name=""SimpleProjectTarget"">
+                      <Message Text=""SimpleProjectBuilt""/>
+                  </Target>
+                  </Project>
+                    ");
+
+                TransientTestFile solutionFile = testEnvironment.CreateFile(folder, "testFolder.sln",
+                    @"
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.6.30114.105
+MinimumVisualStudioVersion = 10.0.40219.1
+Project(""{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}"") = ""simpleProject"", ""simpleProject\simpleProject.csproj"", ""{AA52A05F-A9C0-4C89-9933-BF976A304C91}""
+EndProject
+Project(""{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}"") = ""classlib"", ""classlib\classlib.csproj"", ""{80B8E6B8-E46D-4456-91B1-848FD35C4AB9}""
+EndProject
+                ");
+                RunnerUtilities.ExecMSBuild(solutionFile.Path + " /t:classlib", out bool success);
+                success.ShouldBeTrue();
+            }
+        }
+
         /// <summary>
         /// Verify the AddNewErrorWarningMessageElement method
         /// </summary>
diff --git a/src/Build/Construction/Solution/SolutionProjectGenerator.cs b/src/Build/Construction/Solution/SolutionProjectGenerator.cs
index 3888a265e50..4b1edd904a4 100644
--- a/src/Build/Construction/Solution/SolutionProjectGenerator.cs
+++ b/src/Build/Construction/Solution/SolutionProjectGenerator.cs
@@ -781,8 +781,9 @@ private void EvaluateAndAddProjects(List<ProjectInSolution> projectsInOrder, Lis
                 AddTraversalTargetForProject(traversalInstance, project, projectConfiguration, "Rebuild", "BuildOutput", canBuildDirectly);
                 AddTraversalTargetForProject(traversalInstance, project, projectConfiguration, "Publish", null, canBuildDirectly);
 
-                // Add any other targets specified by the user that were not already added
-                foreach (string targetName in _targetNames.Except(traversalInstance.Targets.Keys, StringComparer.OrdinalIgnoreCase))
+                // Add any other targets specified by the user that were not already added. A target's presence or absence must be determined at the last
+                // minute because whether traversalInstance.Targets.ContainsKey(i) is true or not can change during the enumeration.
+                foreach (string targetName in _targetNames.Where(i => !traversalInstance.Targets.ContainsKey(i)))
                 {
                     AddTraversalTargetForProject(traversalInstance, project, projectConfiguration, targetName, null, canBuildDirectly);
                 }
@@ -796,7 +797,7 @@ private void EvaluateAndAddProjects(List<ProjectInSolution> projectsInOrder, Lis
             }
 
             // Add any other targets specified by the user that were not already added
-            foreach (string targetName in _targetNames.Except(traversalInstance.Targets.Keys, StringComparer.OrdinalIgnoreCase))
+            foreach (string targetName in _targetNames.Where(i => !traversalInstance.Targets.ContainsKey(i)))
             {
                 AddTraversalReferencesTarget(traversalInstance, targetName, null);
             }
@@ -1201,7 +1202,7 @@ private ProjectInstance CreateMetaproject(ProjectInstance traversalProject, Proj
                 AddMetaprojectTargetForWebProject(traversalProject, metaprojectInstance, project, "Rebuild");
                 AddMetaprojectTargetForWebProject(traversalProject, metaprojectInstance, project, "Publish");
 
-                foreach (string targetName in _targetNames.Except(metaprojectInstance.Targets.Keys, StringComparer.OrdinalIgnoreCase))
+                foreach (string targetName in _targetNames.Where(i => !metaprojectInstance.Targets.ContainsKey(i)))
                 {
                     AddMetaprojectTargetForWebProject(traversalProject, metaprojectInstance, project, targetName);
                 }
@@ -1221,7 +1222,7 @@ private ProjectInstance CreateMetaproject(ProjectInstance traversalProject, Proj
                 AddMetaprojectTargetForManagedProject(traversalProject, metaprojectInstance, project, projectConfiguration, "Rebuild", targetOutputItemName);
                 AddMetaprojectTargetForManagedProject(traversalProject, metaprojectInstance, project, projectConfiguration, "Publish", null);
 
-                foreach (string targetName in _targetNames.Except(metaprojectInstance.Targets.Keys, StringComparer.OrdinalIgnoreCase))
+                foreach (string targetName in _targetNames.Where(i => !metaprojectInstance.Targets.ContainsKey(i)))
                 {
                     AddMetaprojectTargetForManagedProject(traversalProject, metaprojectInstance, project, projectConfiguration, targetName, null);
                 }
@@ -1233,7 +1234,7 @@ private ProjectInstance CreateMetaproject(ProjectInstance traversalProject, Proj
                 AddMetaprojectTargetForUnknownProjectType(traversalProject, metaprojectInstance, project, "Rebuild", unknownProjectTypeErrorMessage);
                 AddMetaprojectTargetForUnknownProjectType(traversalProject, metaprojectInstance, project, "Publish", unknownProjectTypeErrorMessage);
 
-                foreach (string targetName in _targetNames.Except(metaprojectInstance.Targets.Keys, StringComparer.OrdinalIgnoreCase))
+                foreach (string targetName in _targetNames.Where(i => !metaprojectInstance.Targets.ContainsKey(i)))
                 {
                     AddMetaprojectTargetForUnknownProjectType(traversalProject, metaprojectInstance, project, targetName, unknownProjectTypeErrorMessage);
                 }