diff --git a/bypy/windows/wix-template.xml b/bypy/windows/wix-template.xml
index 69a80b9e11..01474a462b 100644
--- a/bypy/windows/wix-template.xml
+++ b/bypy/windows/wix-template.xml
@@ -1,4 +1,4 @@
-<?xml version='1.0' encoding='utf-8'?>
+<?xml version='1.0' encoding='utf-8'?>
 <Wix xmlns='http://schemas.microsoft.com/wix/2006/wi' xmlns:util="http://schemas.microsoft.com/wix/UtilExtension"
 >		
 
@@ -60,12 +60,8 @@
     </Property>
 
     <Directory Id='TARGETDIR' Name='SourceDir'>
-        <Directory Id='{ProgramFilesFolder}' Name='PFiles'>
-            <!-- The name must be calibre on 32 bit to ensure
-                that the component guids dont change compared to previous msis.
-                However, on 64 bit it must be Calibre2 otherwise by default it
-                will install to C:\Program Files\calibre -->
-            <Directory Id='APPLICATIONFOLDER' Name="{appfolder}" />
+        <Directory Id='ProgramFiles64Folder' Name='PFiles'>
+            <Directory Id='APPLICATIONFOLDER' Name="Calibre2" />
         </Directory>
         <Directory Id="ProgramMenuFolder">
             <Directory Id="ApplicationProgramsFolder" Name="{app}{x64} - E-book Management"/>
@@ -195,12 +191,12 @@
 
     <InstallExecuteSequence>
         <Custom Action="PreventDowngrading" After="FindRelatedProducts">NEWPRODUCTFOUND</Custom>
-        {fix_wix}
+        <Custom Action="OverwriteWixSetDefaultPerMachineFolder" After="WixSetDefaultPerMachineFolder" /> 
         <RemoveExistingProducts After="InstallFinalize" />
     </InstallExecuteSequence>
     <InstallUISequence>
         <Custom Action="PreventDowngrading" After="FindRelatedProducts">NEWPRODUCTFOUND</Custom>
-        {fix_wix}
+        <Custom Action="OverwriteWixSetDefaultPerMachineFolder" After="WixSetDefaultPerMachineFolder" /> 
     </InstallUISequence>
 
     <UI>
diff --git a/bypy/windows/wix.py b/bypy/windows/wix.py
index 2b0a50b7eb..6291b88c02 100644
--- a/bypy/windows/wix.py
+++ b/bypy/windows/wix.py
@@ -10,15 +10,13 @@ from bypy.constants import is64bit
 from bypy.utils import run
 
 # TODO: Migrate to Wix 4 see https://wixtoolset.org/docs/fourthree/
-WIXP = r'C:\Program Files (x86)\WiX Toolset v3.14'
+WIX = os.path.expanduser('~/.dotnet/tools/wix.exe')
 if is64bit:
     UPGRADE_CODE = '5DD881FF-756B-4097-9D82-8C0F11D521EA'
 else:
     UPGRADE_CODE = 'BEB2A80D-E902-4DAD-ADF9-8BD2DA42CFE1'
 calibre_constants = globals()['calibre_constants']
 
-CANDLE = WIXP + r'\bin\candle.exe'
-LIGHT = WIXP + r'\bin\light.exe'
 j, d, a, b = os.path.join, os.path.dirname, os.path.abspath, os.path.basename
 
 
@@ -33,12 +31,9 @@ def create_installer(env):
     components, smap = get_components_from_files(env)
     wxs = template.format(
         app=calibre_constants['appname'],
-        appfolder='Calibre2' if is64bit else 'Calibre',
         version=calibre_constants['version'],
         upgrade_code=UPGRADE_CODE,
-        ProgramFilesFolder='ProgramFiles64Folder' if is64bit else 'ProgramFilesFolder',
         x64=' 64bit' if is64bit else '',
-        fix_wix='<Custom Action="OverwriteWixSetDefaultPerMachineFolder" After="WixSetDefaultPerMachineFolder" />' if is64bit else '',
         compression='high',
         app_components=components,
         exe_map=smap,
@@ -57,28 +52,16 @@ def create_installer(env):
         f.write(wxs.encode('utf-8'))
     with open(enusf, 'wb') as f:
         f.write(enus.encode('utf-8'))
-    wixobj = j(env.installer_dir, calibre_constants['appname'] + '.wixobj')
     arch = 'x64' if is64bit else 'x86'
-    cmd = [CANDLE, '-nologo', '-arch', arch, '-ext', 'WiXUtilExtension', '-o', wixobj, wxsf]
-    run(*cmd)
     installer = j(env.dist, '%s%s-%s.msi' % (
         calibre_constants['appname'], ('-64bit' if is64bit else ''), calibre_constants['version']))
     license = j(env.src_root, 'LICENSE.rtf')
     banner = j(env.src_root, 'icons', 'wix-banner.bmp')
     dialog = j(env.src_root, 'icons', 'wix-dialog.bmp')
-    cmd = [LIGHT, '-nologo', '-ext', 'WixUIExtension',
-           '-cultures:en-us', '-loc', enusf, wixobj,
-           '-ext', 'WixUtilExtension',
-           '-o', installer,
+    cmd = [WIX, 'build', '-arch', arch, '-culture', 'en-us', '-loc', enusf, '-o', installer,
            '-dWixUILicenseRtf=' + license,
            '-dWixUIBannerBmp=' + banner,
            '-dWixUIDialogBmp=' + dialog]
-    cmd.extend([
-        '-sice:ICE60',  # No language in dlls warning
-        '-sice:ICE61',  # Allow upgrading with same version number
-        '-sice:ICE40',  # Re-install mode overridden
-        '-sice:ICE69',  # Shortcut components are part of a different feature than the files they point to
-    ])
     cmd.append('-sval')  # Disable all checks since they fail when running under ssh
     run(*cmd)