Index: a/src/buildtools/AssemblyCheck/AssemblyCheck.fsproj
===================================================================
--- a/src/buildtools/AssemblyCheck/AssemblyCheck.fsproj
+++ b/src/buildtools/AssemblyCheck/AssemblyCheck.fsproj
@@ -4,6 +4,7 @@
     <OutputType>Exe</OutputType>
     <TargetFramework>net5.0</TargetFramework>
     <DisableImplicitFSharpCoreReference>true</DisableImplicitFSharpCoreReference>
+    <UseAppHost>false</UseAppHost>
   </PropertyGroup>
 
   <ItemGroup>
Index: src/buildtools/fslex/fslex.fsproj
===================================================================
--- a/src/buildtools/fslex/fslex.fsproj
+++ b/src/buildtools/fslex/fslex.fsproj
@@ -5,6 +5,7 @@
     <TargetFramework>net5.0</TargetFramework>
     <DefineConstants>INTERNALIZED_FSLEXYACC_RUNTIME;$(DefineConstants)</DefineConstants>
     <DisableImplicitFSharpCoreReference>true</DisableImplicitFSharpCoreReference>
+    <UseAppHost>false</UseAppHost>
   </PropertyGroup>
 
   <ItemGroup>
Index: src/buildtools/fsyacc/fsyacc.fsproj
===================================================================
--- a/src/buildtools/fsyacc/fsyacc.fsproj
+++ b/src/buildtools/fsyacc/fsyacc.fsproj
@@ -5,6 +5,7 @@
     <TargetFramework>net5.0</TargetFramework>
     <DefineConstants>INTERNALIZED_FSLEXYACC_RUNTIME;$(DefineConstants)</DefineConstants>
     <DisableImplicitFSharpCoreReference>true</DisableImplicitFSharpCoreReference>
+    <UseAppHost>false</UseAppHost>
   </PropertyGroup>
 
   <ItemGroup>
Index: src/fsharp/fsc/fsc.fsproj
===================================================================
--- a/src/fsharp/fsc/fsc.fsproj
+++ b/src/fsharp/fsc/fsc.fsproj
@@ -11,7 +11,7 @@
     <AllowCrossTargeting>true</AllowCrossTargeting>
     <OtherFlags>$(OtherFlags) --maxerrors:20 --extraoptimizationloops:1</OtherFlags>
     <NGenBinary>true</NGenBinary>
-    <UseAppHost>true</UseAppHost>
+    <UseAppHost>false</UseAppHost>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(TargetFramework)' == 'net472'">
Index: src/fsharp/fsi/fsi.fsproj
===================================================================
--- a/src/fsharp/fsi/fsi.fsproj
+++ b/src/fsharp/fsi/fsi.fsproj
@@ -12,7 +12,7 @@
     <OtherFlags>$(OtherFlags) --warnon:1182 --maxerrors:20 --extraoptimizationloops:1</OtherFlags>
     <Win32Resource>fsi.res</Win32Resource>
     <NGenBinary>true</NGenBinary>
-    <UseAppHost>true</UseAppHost>
+    <UseAppHost>false</UseAppHost>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(TargetFramework)' == 'net472'">
Index: tests/benchmarks/MicroPerf/MicroPerf.fsproj
===================================================================
--- a/tests/benchmarks/MicroPerf/MicroPerf.fsproj
+++ b/tests/benchmarks/MicroPerf/MicroPerf.fsproj
@@ -3,6 +3,7 @@
     <TargetFramework>net5.0</TargetFramework>
     <OutputType>Exe</OutputType>
     <DisableImplicitFSharpCoreReference>true</DisableImplicitFSharpCoreReference>
+    <UseAppHost>false</UseAppHost>
     <!-- Turn off "This function is for use by compiled F# code and should not be used directly" -->
     <OtherFlags>$(OtherFlags) --nowarn:1204</OtherFlags>
     <!-- Turn off "Experimental" -->
Index: tests/benchmarks/TaskPerf/TaskPerf.fsproj
===================================================================
--- a/tests/benchmarks/TaskPerf/TaskPerf.fsproj
+++ b/tests/benchmarks/TaskPerf/TaskPerf.fsproj
@@ -4,6 +4,7 @@
     <TargetFramework>net5.0</TargetFramework>
     <OutputType>Exe</OutputType>
     <DisableImplicitFSharpCoreReference>true</DisableImplicitFSharpCoreReference>
+    <UseAppHost>false</UseAppHost>
     <!-- Turn off "This function is for use by compiled F# code and should not be used directly" -->
 	<OtherFlags>$(OtherFlags) --nowarn:1204</OtherFlags>
     <!-- Turn off "Experimental" -->