diff --git a/.editorconfig b/.editorconfig
index 5502d9c316c..1f863f6b71e 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -386,6 +386,7 @@ dotnet_diagnostic.IDE0030WithoutSuggestion.severity = error
 dotnet_diagnostic.IDE0031.severity = warning      # Use null propagation (nullable)
 dotnet_diagnostic.IDE0051.severity = warning      # Private member unused
 dotnet_diagnostic.IDE0052.severity = warning      # Remove unread private members
+dotnet_diagnostic.IDE0059.severity = error        # Unnecessary assignment
 dotnet_diagnostic.IDE0079.severity = warning      # Unused suppresion
 dotnet_diagnostic.IDE0083.severity = warning      # Use pattern matching
 dotnet_diagnostic.IDE0084.severity = warning      # Use IsNot
diff --git a/src/Microsoft.VisualStudio.ProjectSystem.Managed.VS/ProjectSystem/VS/References/AbstractReferenceHandler.cs b/src/Microsoft.VisualStudio.ProjectSystem.Managed.VS/ProjectSystem/VS/References/AbstractReferenceHandler.cs
index b658adaf96f..10527f19d9f 100644
--- a/src/Microsoft.VisualStudio.ProjectSystem.Managed.VS/ProjectSystem/VS/References/AbstractReferenceHandler.cs
+++ b/src/Microsoft.VisualStudio.ProjectSystem.Managed.VS/ProjectSystem/VS/References/AbstractReferenceHandler.cs
@@ -67,7 +67,6 @@ internal async Task<List<ProjectSystemReferenceInfo>> GetReferencesAsync(Configu
 
         private static async Task<bool> GetAttributeTreatAsUsedAsync(IProjectProperties metadata)
         {
-            var propertyNames = await metadata.GetPropertyNamesAsync();
             string? value = await metadata.GetEvaluatedPropertyValueAsync(ProjectReference.TreatAsUsedProperty);
 
             return value is not null && PropertySerializer.SimpleTypes.ToValue<bool>(value);
diff --git a/src/Microsoft.VisualStudio.ProjectSystem.Managed.VS/ProjectSystem/VS/UpToDate/UpToDateCheckStatePersistence.cs b/src/Microsoft.VisualStudio.ProjectSystem.Managed.VS/ProjectSystem/VS/UpToDate/UpToDateCheckStatePersistence.cs
index e89a6a64330..cb37237feb9 100644
--- a/src/Microsoft.VisualStudio.ProjectSystem.Managed.VS/ProjectSystem/VS/UpToDate/UpToDateCheckStatePersistence.cs
+++ b/src/Microsoft.VisualStudio.ProjectSystem.Managed.VS/ProjectSystem/VS/UpToDate/UpToDateCheckStatePersistence.cs
@@ -178,7 +178,7 @@ async Task<string> GetCacheFilePathAsync(CancellationToken cancellationToken)
                     guidProject: Guid.Empty,
                     fVersionSpecific: true,
                     fEnsureCreated: true,
-                    out bool isTemporary,
+                    out _, // isTemporary
                     out string workingFolderPath);
 
                 return Path.Combine(workingFolderPath, ProjectItemCacheFileName);
diff --git a/tests/Microsoft.VisualStudio.ProjectSystem.Managed.UnitTests/ProjectSystem/PackageRestore/PackageRestoreCycleDetectorTests.cs b/tests/Microsoft.VisualStudio.ProjectSystem.Managed.UnitTests/ProjectSystem/PackageRestore/PackageRestoreCycleDetectorTests.cs
index a9af5c85762..b24f8437758 100644
--- a/tests/Microsoft.VisualStudio.ProjectSystem.Managed.UnitTests/ProjectSystem/PackageRestore/PackageRestoreCycleDetectorTests.cs
+++ b/tests/Microsoft.VisualStudio.ProjectSystem.Managed.UnitTests/ProjectSystem/PackageRestore/PackageRestoreCycleDetectorTests.cs
@@ -40,8 +40,6 @@ private static PackageRestoreCycleDetector CreateInstance()
     {
         var project = UnconfiguredProjectFactory.CreateWithActiveConfiguredProjectProvider(IProjectThreadingServiceFactory.Create());
 
-        var projectSystemOptions = new Mock<IProjectSystemOptions>();
-
         var telemetryService = new Mock<ITelemetryService>();
         var nonModelNotificationService = new Mock<INonModalNotificationService>();
 
diff --git a/tests/Microsoft.VisualStudio.ProjectSystem.Managed.VS.UnitTests/ProjectSystem/VS/Rules/MiscellaneousRuleTests.cs b/tests/Microsoft.VisualStudio.ProjectSystem.Managed.VS.UnitTests/ProjectSystem/VS/Rules/MiscellaneousRuleTests.cs
index 107bb9b1da8..ba72e5f8823 100644
--- a/tests/Microsoft.VisualStudio.ProjectSystem.Managed.VS.UnitTests/ProjectSystem/VS/Rules/MiscellaneousRuleTests.cs
+++ b/tests/Microsoft.VisualStudio.ProjectSystem.Managed.VS.UnitTests/ProjectSystem/VS/Rules/MiscellaneousRuleTests.cs
@@ -271,7 +271,6 @@ public static IEnumerable<object[]> GetEmbeddedRules()
             foreach (var rule in GetAllRules())
             {
                 string ruleName = (string)rule[0];
-                string fullPath = (string)rule[1];
 
                 if (s_embeddedRuleNames.Contains(ruleName))
                 {
diff --git a/tests/Microsoft.VisualStudio.ProjectSystem.Managed.VS.UnitTests/ProjectSystem/VS/UpToDate/BuildUpToDateCheckTests.cs b/tests/Microsoft.VisualStudio.ProjectSystem.Managed.VS.UnitTests/ProjectSystem/VS/UpToDate/BuildUpToDateCheckTests.cs
index e324aaa7dfc..68b7d85679c 100644
--- a/tests/Microsoft.VisualStudio.ProjectSystem.Managed.VS.UnitTests/ProjectSystem/VS/UpToDate/BuildUpToDateCheckTests.cs
+++ b/tests/Microsoft.VisualStudio.ProjectSystem.Managed.VS.UnitTests/ProjectSystem/VS/UpToDate/BuildUpToDateCheckTests.cs
@@ -679,7 +679,6 @@ public async Task IsUpToDateAsync_True_NewProjectRebuiltThenBuilt()
 
             var t0 = DateTime.UtcNow.AddMinutes(-3); // t0 Input file timestamp
             var t1 = DateTime.UtcNow.AddMinutes(-2); // t1 Rebuild (sets output file timestamp)
-            var t2 = DateTime.UtcNow.AddMinutes(-1); // t2 Check up-to-date (true)
 
             _fileSystem.AddFile(_inputPath, t0);