diff --git a/src/OmniSharp.Host/MSBuild/Discovery/Providers/StandAloneInstanceProvider.cs b/src/OmniSharp.Host/MSBuild/Discovery/Providers/StandAloneInstanceProvider.cs
index f0cb645681..e7cf7be033 100644
--- a/src/OmniSharp.Host/MSBuild/Discovery/Providers/StandAloneInstanceProvider.cs
+++ b/src/OmniSharp.Host/MSBuild/Discovery/Providers/StandAloneInstanceProvider.cs
@@ -30,19 +30,29 @@ public override ImmutableArray<MSBuildInstance> GetInstances()
 
             var propertyOverrides = ImmutableDictionary.CreateBuilder<string, string>(StringComparer.OrdinalIgnoreCase);
 
-            // To better support older versions of Mono that don't include
-            // MSBuild 15, we attempt to set property overrides to the locations
-            // of Mono's 'xbuild' and 'xbuild-frameworks' paths.
-            if (_allowMonoPaths && PlatformHelper.IsMono)
+            if (PlatformHelper.IsMono)
             {
-                if (TryGetMonoXBuildPath(out var xbuildPath))
+                // This disables a hack in the "GetReferenceAssemblyPaths" task which attempts
+                // guarantee that .NET Framework SP1 is installed when the target framework is
+                // .NET Framework, but the version is less than 4.0. The hack attempts to locate
+                // a particular assembly in the GAC as a "guarantee". However, we don't include that
+                // in our Mono package. So, we'll just bypass the check.
+                propertyOverrides.Add("BypassFrameworkInstallChecks", "true");
+
+                // To better support older versions of Mono that don't include
+                // MSBuild 15, we attempt to set property overrides to the locations
+                // of Mono's 'xbuild' and 'xbuild-frameworks' paths.
+                if (_allowMonoPaths)
                 {
-                    extensionsPath = xbuildPath;
-                }
-
-                if (TryGetMonoXBuildFrameworksPath(out var xbuildFrameworksPath))
-                {
-                    propertyOverrides.Add("TargetFrameworkRootPath", xbuildFrameworksPath);
+                    if (TryGetMonoXBuildPath(out var xbuildPath))
+                    {
+                        extensionsPath = xbuildPath;
+                    }
+
+                    if (TryGetMonoXBuildFrameworksPath(out var xbuildFrameworksPath))
+                    {
+                        propertyOverrides.Add("TargetFrameworkRootPath", xbuildFrameworksPath);
+                    }
                 }
             }
 
diff --git a/src/OmniSharp.MSBuild/ProjectFile/PropertyNames.cs b/src/OmniSharp.MSBuild/ProjectFile/PropertyNames.cs
index 572036a5fd..2de1455018 100644
--- a/src/OmniSharp.MSBuild/ProjectFile/PropertyNames.cs
+++ b/src/OmniSharp.MSBuild/ProjectFile/PropertyNames.cs
@@ -7,6 +7,7 @@ internal static class PropertyNames
         public const string AssemblyOriginatorKeyFile = nameof(AssemblyOriginatorKeyFile);
         public const string BuildProjectReferences = nameof(BuildProjectReferences);
         public const string BuildingInsideVisualStudio = nameof(BuildingInsideVisualStudio);
+        public const string BypassFrameworkInstallChecks = nameof(BypassFrameworkInstallChecks);
         public const string Configuration = nameof(Configuration);
         public const string CscToolExe = nameof(CscToolExe);
         public const string CscToolPath = nameof(CscToolPath);
diff --git a/src/OmniSharp.MSBuild/ProjectLoader.cs b/src/OmniSharp.MSBuild/ProjectLoader.cs
index c494f9a5a3..dd16de599c 100644
--- a/src/OmniSharp.MSBuild/ProjectLoader.cs
+++ b/src/OmniSharp.MSBuild/ProjectLoader.cs
@@ -52,6 +52,11 @@ private static Dictionary<string, string> CreateGlobalProperties(
             globalProperties.AddPropertyOverride(PropertyNames.Configuration, options.Configuration, propertyOverrides, logger);
             globalProperties.AddPropertyOverride(PropertyNames.Platform, options.Platform, propertyOverrides, logger);
 
+            if (propertyOverrides.TryGetValue(PropertyNames.BypassFrameworkInstallChecks, out var value))
+            {
+                globalProperties.Add(PropertyNames.BypassFrameworkInstallChecks, value);
+            }
+
             return globalProperties;
         }