diff --git a/Installer/InnoSetup/WinMergeARM64.is6.iss b/Installer/InnoSetup/WinMergeARM64.is6.iss
index 319a856777b..6f03ba696c4 100644
--- a/Installer/InnoSetup/WinMergeARM64.is6.iss
+++ b/Installer/InnoSetup/WinMergeARM64.is6.iss
@@ -782,7 +782,7 @@ Filename: {sys}\regsvr32.exe; Parameters: "/s ""{app}\{#ShellExtension64bit}""";
 Filename: {sys}\regsvr32.exe; Parameters: "/s /n /i:user ""{app}\{#ShellExtension64bit}"""; Flags: waituntilterminated; Check: not IsAdminInstallMode and not IsWindows11OrLater
 Filename: {app}\WinMerge32BitPluginProxy.exe; Parameters: "/RegServer"; Flags: waituntilidle; Check: IsAdminInstallMode
 Filename: {app}\WinMerge32BitPluginProxy.exe; Parameters: "/RegServerPerUser"; Flags: waituntilidle; Check: not IsAdminInstallMode
-Filename: {win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe; Parameters: "-NoProfile -WindowStyle ""Hidden"" -c ""$host.ui.RawUI.WindowTitle = 'Registering WinMergeContextMenu package...'; if ((Get-AppxPackage -name WinMerge) -eq $null) {{ Add-AppxPackage \""{app}\WinMergeContextMenuPackage.msix\"" -ExternalLocation \""{app}\""}"""; Flags: waituntilterminated; Check: IsWindows11OrLater
+Filename: {win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe; Parameters: "-NoProfile -WindowStyle Hidden -c ""if ((Get-AppxPackage -name WinMerge) -eq $null) {{ Add-AppxPackage \""{app}\WinMergeContextMenuPackage.msix\"" -ExternalLocation \""{app}\""}"""; Flags: waituntilterminated; Check: IsWindows11OrLater
 
 [UninstallRun]
 Filename: {syswow64}\regsvr32.exe; Parameters: "/s /u ""{app}\{#ShellExtension32bit}"""; Flags: waituntilterminated; Check: IsAdminInstallMode; Components: ShellExtension32bit
@@ -910,7 +910,7 @@ var
   ResultCode: Integer;
 Begin;
   if RegKeyExists(HKLM, 'SOFTWARE\Classes\PackagedCom\ClassIndex\{90340779-F37E-468E-9728-A2593498ED32}') then
-    Exec(ExpandConstant('{win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe'), '-NoProfile -WindowStyle ""Hidden"" -c "$host.ui.RawUI.WindowTitle = ""Unregistering WinMergeContextMenu package...""; Get-AppxPackage -name WinMerge | Remove-AppxPackage"', '', SW_SHOW, ewWaitUntilTerminated, ResultCode);  
+    Exec(ExpandConstant('{win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe'), '-NoProfile -WindowStyle Hidden -c "Get-AppxPackage -name WinMerge | Remove-AppxPackage"', '', SW_SHOW, ewWaitUntilTerminated, ResultCode);  
   Result := true;
 End;
 
diff --git a/Installer/InnoSetup/WinMergeX64.is6.iss b/Installer/InnoSetup/WinMergeX64.is6.iss
index 2d7c93a398f..2095f21e96a 100644
--- a/Installer/InnoSetup/WinMergeX64.is6.iss
+++ b/Installer/InnoSetup/WinMergeX64.is6.iss
@@ -781,7 +781,7 @@ Filename: {sys}\regsvr32.exe; Parameters: "/s ""{app}\{#ShellExtension64bit}""";
 Filename: {sys}\regsvr32.exe; Parameters: "/s /n /i:user ""{app}\{#ShellExtension64bit}"""; Flags: waituntilterminated; Check: not IsAdminInstallMode and not IsWindows11OrLater
 Filename: {app}\WinMerge32BitPluginProxy.exe; Parameters: "/RegServer"; Flags: waituntilidle; Check: IsAdminInstallMode
 Filename: {app}\WinMerge32BitPluginProxy.exe; Parameters: "/RegServerPerUser"; Flags: waituntilidle; Check: not IsAdminInstallMode
-Filename: {win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe; Parameters: "-NoProfile -WindowStyle ""Hidden"" -c ""$host.ui.RawUI.WindowTitle = 'Registering WinMergeContextMenu package...'; if ((Get-AppxPackage -name WinMerge) -eq $null) {{ Add-AppxPackage \""{app}\WinMergeContextMenuPackage.msix\"" -ExternalLocation \""{app}\""}"""; Flags: waituntilterminated; Check: IsWindows11OrLater
+Filename: {win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe; Parameters: "-NoProfile -WindowStyle Hidden -c ""if ((Get-AppxPackage -name WinMerge) -eq $null) {{ Add-AppxPackage \""{app}\WinMergeContextMenuPackage.msix\"" -ExternalLocation \""{app}\""}"""; Flags: waituntilterminated; Check: IsWindows11OrLater
 
 [UninstallRun]
 Filename: {syswow64}\regsvr32.exe; Parameters: "/s /u ""{app}\{#ShellExtension32bit}"""; Flags: waituntilterminated; Check: IsAdminInstallMode; Components: ShellExtension32bit
@@ -909,7 +909,7 @@ var
   ResultCode: Integer;
 Begin;
   if RegKeyExists(HKLM, 'SOFTWARE\Classes\PackagedCom\ClassIndex\{90340779-F37E-468E-9728-A2593498ED32}') then
-    Exec(ExpandConstant('{win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe'), '-NoProfile -WindowStyle ""Hidden"" -c "$host.ui.RawUI.WindowTitle = ""Unregistering WinMergeContextMenu package...""; Get-AppxPackage -name WinMerge | Remove-AppxPackage"', '', SW_SHOW, ewWaitUntilTerminated, ResultCode);  
+    Exec(ExpandConstant('{win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe'), '-NoProfile -WindowStyle Hidden -c "Get-AppxPackage -name WinMerge | Remove-AppxPackage"', '', SW_SHOW, ewWaitUntilTerminated, ResultCode);  
   Result := true;
 End;
 
diff --git a/Installer/InnoSetup/WinMergeX64.iss b/Installer/InnoSetup/WinMergeX64.iss
index 07b0633af90..e9b503d8ff6 100644
--- a/Installer/InnoSetup/WinMergeX64.iss
+++ b/Installer/InnoSetup/WinMergeX64.iss
@@ -766,7 +766,7 @@ Filename: {app}\WinMergeU.exe; Description: {cm:LaunchProgram,WinMerge}; Flags:
 
 Filename: {sys}\regsvr32.exe; Parameters: "/s ""{app}\{#ShellExtension64bit}"""; Flags: waituntilterminated; Check: not IsWindows11OrLater
 Filename: {app}\WinMerge32BitPluginProxy.exe; Parameters: "/RegServer"; Flags: waituntilidle
-Filename: {win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe; Parameters: "-NoProfile -WindowStyle ""Hidden"" -c ""$host.ui.RawUI.WindowTitle = 'Registering WinMergeContextMenu package...'; if ((Get-AppxPackage -name WinMerge) -eq $null) {{ Add-AppxPackage \""{app}\WinMergeContextMenuPackage.msix\"" -ExternalLocation \""{app}\""}"""; Flags: waituntilterminated; Check: IsWindows11OrLater
+Filename: {win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe; Parameters: "-NoProfile -WindowStyle Hidden -c ""if ((Get-AppxPackage -name WinMerge) -eq $null) {{ Add-AppxPackage \""{app}\WinMergeContextMenuPackage.msix\"" -ExternalLocation \""{app}\""}"""; Flags: waituntilterminated; Check: IsWindows11OrLater
 
 [UninstallRun]
 Filename: {sys}\regsvr32.exe; Parameters: "/s /u ""{app}\{#ShellExtension64bit}"""; Flags: waituntilterminated
@@ -890,7 +890,7 @@ var
   ResultCode: Integer;
 Begin;
   if RegKeyExists(HKLM, 'SOFTWARE\Classes\PackagedCom\ClassIndex\{90340779-F37E-468E-9728-A2593498ED32}') then
-    Exec(ExpandConstant('{win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe'), '-NoProfile -WindowStyle ""Hidden"" -c "$host.ui.RawUI.WindowTitle = ""Unregistering WinMergeContextMenu package...""; Get-AppxPackage -name WinMerge | Remove-AppxPackage"', '', SW_SHOW, ewWaitUntilTerminated, ResultCode);  
+    Exec(ExpandConstant('{win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe'), '-NoProfile -WindowStyle Hidden -c "Get-AppxPackage -name WinMerge | Remove-AppxPackage"', '', SW_SHOW, ewWaitUntilTerminated, ResultCode);  
   Result := true;
 End;
 
diff --git a/Installer/InnoSetup/WinMergeX64NonAdmin.iss b/Installer/InnoSetup/WinMergeX64NonAdmin.iss
index 9cb4eb6c37f..719762d3b69 100644
--- a/Installer/InnoSetup/WinMergeX64NonAdmin.iss
+++ b/Installer/InnoSetup/WinMergeX64NonAdmin.iss
@@ -763,7 +763,7 @@ Filename: {app}\WinMergeU.exe; Description: {cm:LaunchProgram,WinMerge}; Flags:
 Filename: {syswow64}\regsvr32.exe; Parameters: "/s /n /i:user ""{app}\{#ShellExtension32bit}"""; Flags: waituntilterminated; Components: ShellExtension32bit
 Filename: {sys}\regsvr32.exe; Parameters: "/s /n /i:user ""{app}\{#ShellExtension64bit}"""; Flags: waituntilterminated; Check: not IsWindows11OrLater
 Filename: {app}\WinMerge32BitPluginProxy.exe; Parameters: "/RegServerPerUser"; Flags: waituntilidle
-Filename: {win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe; Parameters: "-NoProfile -WindowStyle ""Hidden"" -c ""$host.ui.RawUI.WindowTitle = 'Registering WinMergeContextMenu package...'; if ((Get-AppxPackage -name WinMerge) -eq $null) {{ Add-AppxPackage \""{app}\WinMergeContextMenuPackage.msix\"" -ExternalLocation \""{app}\""}"""; Flags: waituntilterminated; Check: IsWindows11OrLater
+Filename: {win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe; Parameters: "-NoProfile -WindowStyle Hidden -c ""if ((Get-AppxPackage -name WinMerge) -eq $null) {{ Add-AppxPackage \""{app}\WinMergeContextMenuPackage.msix\"" -ExternalLocation \""{app}\""}"""; Flags: waituntilterminated; Check: IsWindows11OrLater
 
 [UninstallRun]
 Filename: {syswow64}\regsvr32.exe; Parameters: "/s /u /n /i:user ""{app}\{#ShellExtension32bit}"""; Flags: waituntilterminated; Components: ShellExtension32bit
@@ -888,7 +888,7 @@ var
   ResultCode: Integer;
 Begin;
   if RegKeyExists(HKLM, 'SOFTWARE\Classes\PackagedCom\ClassIndex\{90340779-F37E-468E-9728-A2593498ED32}') then
-    Exec(ExpandConstant('{win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe'), '-NoProfile -WindowStyle ""Hidden"" -c "$host.ui.RawUI.WindowTitle = ""Unregistering WinMergeContextMenu package...""; Get-AppxPackage -name WinMerge | Remove-AppxPackage"', '', SW_SHOW, ewWaitUntilTerminated, ResultCode);  
+    Exec(ExpandConstant('{win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe'), '-NoProfile -WindowStyle Hidden -c "Get-AppxPackage -name WinMerge | Remove-AppxPackage"', '', SW_SHOW, ewWaitUntilTerminated, ResultCode);  
   Result := true;
 End;
 
diff --git a/Installer/InnoSetup/WinMergeX86.iss b/Installer/InnoSetup/WinMergeX86.iss
index 30a80995280..bbc3807a0af 100755
--- a/Installer/InnoSetup/WinMergeX86.iss
+++ b/Installer/InnoSetup/WinMergeX86.iss
@@ -787,7 +787,7 @@ Filename: {win}\Explorer.exe; Description: {cm:ViewStartMenuFolder}; Parameters:
 Filename: {app}\WinMergeU.exe; Description: {cm:LaunchProgram,WinMerge}; Flags: nowait postinstall skipifsilent runmaximized
 
 Filename: {sys}\regsvr32.exe; Parameters: "/s ""{app}\{#ShellExtension64bit}"""; Flags: waituntilterminated; Check: not IsWindows11OrLater
-Filename: {win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe; Parameters: "-NoProfile -WindowStyle ""Hidden"" -c ""$host.ui.RawUI.WindowTitle = 'Registering WinMergeContextMenu package...'; if ((Get-AppxPackage -name WinMerge) -eq $null) {{ Add-AppxPackage \""{app}\WinMergeContextMenuPackage.msix\"" -ExternalLocation \""{app}\""}"""; Flags: waituntilterminated; Check: IsWindows11OrLater
+Filename: {win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe; Parameters: "-NoProfile -WindowStyle Hidden -c ""if ((Get-AppxPackage -name WinMerge) -eq $null) {{ Add-AppxPackage \""{app}\WinMergeContextMenuPackage.msix\"" -ExternalLocation \""{app}\""}"""; Flags: waituntilterminated; Check: IsWindows11OrLater
 
 [UninstallRun]
 Filename: {sys}\regsvr32.exe; Parameters: "/s /u ""{app}\{#ShellExtension64bit}"""; Flags: waituntilterminated
@@ -910,7 +910,7 @@ var
   ResultCode: Integer;
 Begin;
   if RegKeyExists(HKLM, 'SOFTWARE\Classes\PackagedCom\ClassIndex\{90340779-F37E-468E-9728-A2593498ED32}') then
-    Exec(ExpandConstant('{win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe'), '-NoProfile -WindowStyle ""Hidden"" -c "$host.ui.RawUI.WindowTitle = ""Unregistering WinMergeContextMenu package...""; Get-AppxPackage -name WinMerge | Remove-AppxPackage"', '', SW_SHOW, ewWaitUntilTerminated, ResultCode);  
+    Exec(ExpandConstant('{win}\sysnative\WindowsPowerShell\v1.0\PowerShell.exe'), '-NoProfile -WindowStyle Hidden -c "Get-AppxPackage -name WinMerge | Remove-AppxPackage"', '', SW_SHOW, ewWaitUntilTerminated, ResultCode);  
   Result := true;
 End;