diff --git a/Ext4Fsd/Ext2Fsd.inf b/Ext4Fsd/Ext2Fsd.inf
index 6d772ac..e35c5d4 100644
--- a/Ext4Fsd/Ext2Fsd.inf
+++ b/Ext4Fsd/Ext2Fsd.inf
@@ -17,6 +17,7 @@ Provider    = %Ext2Fsd*Author%
 Signature   = "$Windows NT$"
 DriverVer   = 03/04/2020,0.70
 CatalogFile = Ext2Fsd.cat
+PnpLockdown = 1
 
 [DefaultInstall.NTx86]
 AddReg     = Ext2Fsd.Install.AddReg
diff --git a/Ext4Fsd/Ext4Fsd.vcxproj b/Ext4Fsd/Ext4Fsd.vcxproj
index 565d1e3..1a26833 100644
--- a/Ext4Fsd/Ext4Fsd.vcxproj
+++ b/Ext4Fsd/Ext4Fsd.vcxproj
@@ -183,6 +183,9 @@
     <Link>
       <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
+    <DriverSign>
+      <FileDigestAlgorithm>sha1</FileDigestAlgorithm>
+    </DriverSign>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
@@ -194,6 +197,9 @@
     <Link>
       <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
+    <DriverSign>
+      <FileDigestAlgorithm>sha1</FileDigestAlgorithm>
+    </DriverSign>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
@@ -202,6 +208,9 @@
       <PreprocessorDefinitions>__KERNEL__;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <DisableSpecificWarnings>4995;%(DisableSpecificWarnings)</DisableSpecificWarnings>
     </ClCompile>
+    <DriverSign>
+      <FileDigestAlgorithm>sha1</FileDigestAlgorithm>
+    </DriverSign>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
@@ -210,6 +219,9 @@
       <PreprocessorDefinitions>__KERNEL__;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <DisableSpecificWarnings>4995;%(DisableSpecificWarnings)</DisableSpecificWarnings>
     </ClCompile>
+    <DriverSign>
+      <FileDigestAlgorithm>sha1</FileDigestAlgorithm>
+    </DriverSign>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">
     <ClCompile>