diff --git a/packages/win_installer/aegisub3.iss b/packages/win_installer/aegisub3.iss
index 61960ad36..b4361a733 100644
--- a/packages/win_installer/aegisub3.iss
+++ b/packages/win_installer/aegisub3.iss
@@ -5,7 +5,7 @@
 
 [Setup]
 AppID={{24BC8B57-716C-444F-B46B-A3349B9164C5}
-DefaultDirName={pf}\Aegisub
+DefaultDirName={commonpf}\Aegisub
 PrivilegesRequired=poweruser
 ArchitecturesInstallIn64BitMode=x64
 ArchitecturesAllowed=x64
@@ -41,7 +41,7 @@ begin
 
   if CurStep = ssPostInstall then
   begin
-    if IsTaskSelected('checkforupdates') then
+    if WizardIsTaskSelected('checkforupdates') then
       Updates := 'true'
     else
       Updates := 'false';
diff --git a/packages/win_installer/fragment_migrate_code.iss b/packages/win_installer/fragment_migrate_code.iss
index ff655154f..2ba53ffdd 100644
--- a/packages/win_installer/fragment_migrate_code.iss
+++ b/packages/win_installer/fragment_migrate_code.iss
@@ -31,7 +31,7 @@ end;
 function InitializeSetupMigration: Boolean;
 begin
   LegacyStartMenuFolder := 'Aegisub';
-  LegacyInstallFolder := ExpandConstant('{pf}\Aegisub');
+  LegacyInstallFolder := ExpandConstant('{commonpf32}\Aegisub');
   LegacyVersionNumber := '1.x';
 
   try
diff --git a/packages/win_installer/fragment_setupbase.iss b/packages/win_installer/fragment_setupbase.iss
index 168c5f88b..1d4529587 100644
--- a/packages/win_installer/fragment_setupbase.iss
+++ b/packages/win_installer/fragment_setupbase.iss
@@ -28,6 +28,7 @@ UsePreviousGroup=yes
 UsePreviousSetupType=no
 UsePreviousAppDir=yes
 UsePreviousTasks=no
+UsedUserAreasWarning=no
 UninstallDisplayIcon={app}\aegisub{#ARCH}.exe
 ; Default to a large welcome bitmap, suitable for large fonts
 ; The normal fonts version is selected by code below