Fixed

DerpingDrivers/DerpingDrivers.csproj

@@ -79,9 +79,6 @@
     <Reference Include="PInvoke.Windows.Core, Version=0.5.0.0, Culture=neutral, PublicKeyToken=9e300f9f87f04a7a, processorArchitecture=MSIL">
       <HintPath>..\packages\PInvoke.Windows.Core.0.5.155\lib\net35\PInvoke.Windows.Core.dll</HintPath>
     </Reference>
-    <Reference Include="RunProcessAsTask, Version=1.2.3.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\packages\RunProcessAsTask.1.2.3\lib\net45\RunProcessAsTask.dll</HintPath>
-    </Reference>
     <Reference Include="SimpleMapi, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>..\packages\Simple-MAPI.NET.1.1.0\lib\net20\SimpleMapi.dll</HintPath>
     </Reference>

DerpingDrivers/MainWindow.xaml.cs

@@ -69,6 +69,8 @@ namespace DerpingDrivers
         {
             get
             {
+                BcdHelper.DisableTestSigning();
+
                 var t = BcdHelper.IsTestSignEnabled;
 
                 #region TESTSIGNING mode

DerpingDrivers/Util/BcdHelper.cs

@@ -1,6 +1,6 @@
-using DerpingDrivers.Exceptions;
+using System.Diagnostics;
+using DerpingDrivers.Exceptions;
 using Microsoft.Win32;
-using RunProcessAsTask;
 
 namespace DerpingDrivers.Util
 {
@@ -18,30 +18,50 @@ namespace DerpingDrivers.Util
                     $@"HKEY_LOCAL_MACHINE\BCD00000000\Objects\{bootmgrDefaultGuid}\Elements\16000049",
                     "Element", default(byte[]));
 
-                return allowPrereleaseSignatures != null && bool.Parse(allowPrereleaseSignatures[0].ToString());
+                return allowPrereleaseSignatures != null && int.Parse(allowPrereleaseSignatures[0].ToString()) > 0;
             }
         }
 
         public static void EnableTestSigning()
         {
             // NOTE: haven't found an API for this (yet), so system() we go!
-            var ret = ProcessEx.RunAsync("Bcdedit.exe", "-set TESTSIGNING ON").Result;
+            var cmd = new Process
-
-            if (ret.ExitCode != 0)
             {
+                StartInfo =
+                {
+                    FileName = "Bcdedit.exe",
+                    Arguments = "-set TESTSIGNING ON",
+                    WindowStyle = ProcessWindowStyle.Hidden,
+                    CreateNoWindow = true
+                }
+            };
+
+            cmd.Start();
+            cmd.WaitForExit();
+
+            if (cmd.ExitCode != 0)
                 throw new BcdAlterAllowPrereleaseSignaturesFailedException("Couldn't enable TESTSIGNING");
-            }
         }
 
         public static void DisableTestSigning()
         {
             // NOTE: haven't found an API for this (yet), so system() we go!
-            var ret = ProcessEx.RunAsync("Bcdedit.exe", "-set TESTSIGNING OFF").Result;
+            var cmd = new Process
-
-            if (ret.ExitCode != 0)
             {
+                StartInfo =
+                {
+                    FileName = "Bcdedit.exe",
+                    Arguments = "-set TESTSIGNING OFF",
+                    WindowStyle = ProcessWindowStyle.Hidden,
+                    CreateNoWindow = true
+                }
+            };
+
+            cmd.Start();
+            cmd.WaitForExit();
+
+            if (cmd.ExitCode != 0)
                 throw new BcdAlterAllowPrereleaseSignaturesFailedException("Couldn't disable TESTSIGNING");
-            }
         }
     }
 }

DerpingDrivers/packages.config

@@ -12,6 +12,5 @@
   <package id="Markdig.Wpf" version="0.2.5" targetFramework="net461" />
   <package id="PInvoke.Kernel32" version="0.5.155" targetFramework="net461" />
   <package id="PInvoke.Windows.Core" version="0.5.155" targetFramework="net461" />
-  <package id="RunProcessAsTask" version="1.2.3" targetFramework="net461" />
   <package id="Simple-MAPI.NET" version="1.1.0" targetFramework="net461" />
 </packages>