diff --git a/Program.cs b/Program.cs
index 499f14d1..81516ce7 100644
--- a/Program.cs
+++ b/Program.cs
@@ -157,7 +157,7 @@ private static void Main(){
                 ExitCleanup();
 
                 // ProgramPath has a trailing backslash
-                string updaterArgs = "/SP- /SILENT /CLOSEAPPLICATIONS /UPDATEPATH=\""+ProgramPath+"\" /RUNARGS=\""+Arguments.GetCurrentForInstallerCmd()+"\""+(IsPortable ? " /PORTABLE=1" : "");
+                string updaterArgs = "/SP- /SILENT /FORCECLOSEAPPLICATIONS /UPDATEPATH=\""+ProgramPath+"\" /RUNARGS=\""+Arguments.GetCurrentForInstallerCmd()+"\""+(IsPortable ? " /PORTABLE=1" : "");
                 bool runElevated = !IsPortable || !WindowsUtils.CheckFolderWritePermission(ProgramPath);
 
                 if (WindowsUtils.OpenAssociatedProgram(mainForm.UpdateInstallerPath, updaterArgs, runElevated)){
diff --git a/bld/gen_full.iss b/bld/gen_full.iss
index dbeb1fa0..bd5044ed 100644
--- a/bld/gen_full.iss
+++ b/bld/gen_full.iss
@@ -24,6 +24,8 @@ DefaultGroupName={#MyAppName}
 OutputBaseFilename={#MyAppName}
 VersionInfoVersion={#MyAppVersion}
 SetupIconFile=.\Resources\icon.ico
+CloseApplicationsFilter=*.exe,*.dll,*.pak
+RestartApplications=False
 Uninstallable=TDIsUninstallable
 UninstallDisplayName={#MyAppName}
 UninstallDisplayIcon={app}\{#MyAppExeName}
diff --git a/bld/gen_port.iss b/bld/gen_port.iss
index f1449d6d..56bab0ee 100644
--- a/bld/gen_port.iss
+++ b/bld/gen_port.iss
@@ -24,6 +24,8 @@ DefaultGroupName={#MyAppName}
 OutputBaseFilename={#MyAppName}.Portable
 VersionInfoVersion={#MyAppVersion}
 SetupIconFile=.\Resources\icon.ico
+CloseApplicationsFilter=*.exe,*.dll,*.pak
+RestartApplications=False
 Uninstallable=no
 UsePreviousAppDir=no
 PrivilegesRequired=lowest
diff --git a/bld/gen_upd.iss b/bld/gen_upd.iss
index 534f856b..bd700a5d 100644
--- a/bld/gen_upd.iss
+++ b/bld/gen_upd.iss
@@ -25,6 +25,8 @@ DefaultGroupName={#MyAppName}
 OutputBaseFilename={#MyAppName}.Update
 VersionInfoVersion={#MyAppVersion}
 SetupIconFile=.\Resources\icon.ico
+CloseApplicationsFilter=*.exe,*.dll,*.pak
+RestartApplications=False
 Uninstallable=TDIsUninstallable
 UninstallDisplayName={#MyAppName}
 UninstallDisplayIcon={app}\{#MyAppExeName}
@@ -321,7 +323,7 @@ begin
     WizardForm.ProgressGauge.Style := npbstMarquee
     
     try
-      if Exec(InstallFile, '/SP- /SILENT /UPDATEPATH="'+UpdatePath+'"', '', SW_SHOW, ewWaitUntilTerminated, ResultCode) then
+      if Exec(InstallFile, '/SP- /SILENT /FORCECLOSEAPPLICATIONS /UPDATEPATH="'+UpdatePath+'"', '', SW_SHOW, ewWaitUntilTerminated, ResultCode) then
       begin
         if ResultCode <> 0 then
         begin