diff --git a/app/SetupVS19/Product.wxs b/app/SetupVS19/Product.wxs
index 5e6b2f3..a69316b 100644
--- a/app/SetupVS19/Product.wxs
+++ b/app/SetupVS19/Product.wxs
@@ -27,19 +27,12 @@
 		<Media Id='1' Cabinet='$(var.ProgramName).cab' EmbedCab='yes' DiskPrompt='$(var.ProgramName)'  />
 		<Property Id='DiskPrompt' Value="$(var.ProgramName) Install" />
 
-		<MajorUpgrade
-		  AllowDowngrades="no"
-		  AllowSameVersionUpgrades="yes"
-		  DowngradeErrorMessage="Eine neuere Version von [ProductName] ist bereits installiert. Das Setup wird beendet."
-    />
-
 		<Property Id="PREVIOUSVERSIONSINSTALLED" Secure="yes" />
-		<Upgrade Id="$(var.UpgradeCode)">
-			<UpgradeVersion
-			  Minimum="1.0.0.0" Maximum="1.9.4.0"
-			  Property="PREVIOUSVERSIONSINSTALLED"
-			  IncludeMinimum="yes" IncludeMaximum="no" />
-		</Upgrade>
+    <MajorUpgrade
+			DowngradeErrorMessage="Eine neuere Version von [ProductName] ist bereits installiert. Das Setup wird beendet."
+			Schedule="afterInstallInitialize"
+			AllowSameVersionUpgrades="yes"
+		/>
 
 		<!-- Legt das Icon fest -->
 		<Icon Id="AppIcon.exe" SourceFile="..\taskFLOW\bin\$(var.Configuration)\$(var.ProgramName).exe" />