diff --git a/windows/src/desktop/kmshell/main/Keyman.Configuration.UI.UfrmStartInstall.pas b/windows/src/desktop/kmshell/main/Keyman.Configuration.UI.UfrmStartInstall.pas
index 28e456f691..d30cf44c6a 100644
--- a/windows/src/desktop/kmshell/main/Keyman.Configuration.UI.UfrmStartInstall.pas
+++ b/windows/src/desktop/kmshell/main/Keyman.Configuration.UI.UfrmStartInstall.pas
@@ -1,7 +1,5 @@
 {
   Keyman is copyright (C) SIL Global. MIT License.
-
-  // TODO: #12887 Localise all the labels and captions.
 }
 unit Keyman.Configuration.UI.UfrmStartInstall;
 interface
@@ -23,6 +21,15 @@ uses
   Vcl.Imaging.pngimage;
 
 type
+  // The 4 valid installation form scenarios
+  TInstallCase = (
+    icNone, // Not a valid case, can be used as check before calling creating form
+    icRestartRequiredMetered,
+    icRestartRequiredNotMetered,
+    icReadyToInstallNotMetered, // Metered warning never needed if ReadyToInstall
+    icNoInstallMessageMetered
+  );
+
   TfrmStartInstall = class(TfrmKeymanBase)
     cmdInstall: TButton;
     cmdLater: TButton;
@@ -32,18 +39,15 @@ type
     lblMeteredWarning: TLabel;
     procedure FormCreate(Sender: TObject);
   private
-    FRestartRequired: Boolean;
-    FIsMetered: Boolean;
-    FReadyToInstall: Boolean;
+    FScenario: TInstallCase;
   public
-  constructor Create(
-    AOwner: TComponent;
-    const RestartRequired: Boolean;
-    const IsMetered: Boolean;
-    const ReadyToInstall: Boolean = False); reintroduce;
+    constructor Create(
+      AOwner: TComponent;
+      const AScenario: TInstallCase); reintroduce;
   end;
 
 implementation
+
 uses
   MessageIdentifiers,
   MessageIdentifierConsts;
@@ -52,14 +56,11 @@ uses
 
 constructor TfrmStartInstall.Create(
   AOwner: TComponent;
-  const RestartRequired: Boolean;
-  const IsMetered: Boolean;
-  const ReadyToInstall: Boolean = False);
+  const AScenario: TInstallCase);
 begin
+  Assert(AScenario <> icNone, 'Invalid install case');
+  FScenario := AScenario;
   inherited Create(AOwner);
-  FRestartRequired := RestartRequired;
-  FIsMetered  := IsMetered;
-  FReadyToInstall := ReadyToInstall;
 end;
 
 procedure TfrmStartInstall.FormCreate(Sender: TObject);
@@ -67,17 +68,39 @@ begin
   inherited;
   cmdInstall.Caption := MsgFromId(S_Update_Now);
   cmdLater.Caption := MsgFromId(S_Later);
-  if FRestartRequired then
-    lblUpdateMessage.Caption := MsgFromId(S_Update_Restart_Req)
-  else
-    lblUpdateMessage.Caption := MsgFromId(S_Ready_To_Install);
 
-  // Show warning if on a metered connection. If FReadyToInstall the update is
-  // already downloaded, so no use in displaying the warning.
-  lblMeteredWarning.Visible := FIsMetered and not FReadyToInstall;
-  shpMeteredWarning.Visible := FIsMetered and not FReadyToInstall;
-  if FIsMetered then
-    lblMeteredWarning.Caption := MsgFromId(S_Metered_Warning);
+  // Default UI configuration state - metered warnings hidden initially
+  lblUpdateMessage.Visible := True;
+  lblMeteredWarning.Visible := False;
+  shpMeteredWarning.Visible := False;
+
+  case FScenario of
+    icRestartRequiredMetered:
+    begin
+      lblUpdateMessage.Caption := MsgFromId(S_Update_Restart_Req);
+      lblMeteredWarning.Caption := MsgFromId(S_Metered_Warning);
+      lblMeteredWarning.Visible := True;
+      shpMeteredWarning.Visible := True;
+    end;
+
+    icRestartRequiredNotMetered:
+    begin
+      lblUpdateMessage.Caption := MsgFromId(S_Update_Restart_Req);
+    end;
+
+    icReadyToInstallNotMetered:
+    begin
+      lblUpdateMessage.Caption := MsgFromId(S_Ready_To_Install);
+    end;
+
+    icNoInstallMessageMetered:
+    begin
+      lblUpdateMessage.Visible := False;
+      lblMeteredWarning.Caption := MsgFromId(S_Metered_Warning);
+      lblMeteredWarning.Visible := True;
+      shpMeteredWarning.Visible := True;
+    end;
+  end;
 end;
 
 end.
diff --git a/windows/src/desktop/kmshell/main/UfrmMain.pas b/windows/src/desktop/kmshell/main/UfrmMain.pas
index 485a199372..b34007e0d1 100644
--- a/windows/src/desktop/kmshell/main/UfrmMain.pas
+++ b/windows/src/desktop/kmshell/main/UfrmMain.pas
@@ -819,16 +819,33 @@ var
   FResult, InstallNow: Boolean;
   frmStartInstallNow: TfrmStartInstall;
   IsMetered: Boolean;
+  EInstallScenario: TInstallCase;
 begin
   InstallNow := True;
   IsMetered := UtilNetworkConnection.IsMetered;
+
   // If a restarted is required (HasKeymanRun == True)
   // OR it is a Metered connection warn the user and allow
   // them to cancel their request to Install Now.
-  // Otherwise start installing.
-  if HasKeymanRun OR IsMetered then
+  // Otherwise start installing with out pop-up warnings.
+  EInstallScenario := TInstallCase.icNone;
+  if HasKeymanRun and not IsMetered then
   begin
-    frmStartInstallNow := TfrmStartInstall.Create(nil, HasKeymanRun, IsMetered);
+    EInstallScenario := TInstallCase.icRestartRequiredNotMetered;
+  end
+  else if HasKeymanRun and IsMetered then
+  begin
+    EInstallScenario := TInstallCase.icRestartRequiredMetered;
+  end
+  else if (not HasKeymanRun) and IsMetered then
+  begin
+     EInstallScenario := TInstallCase.icNoInstallMessageMetered;
+  end;
+
+  // Render dialog if conditions require it
+  if EInstallScenario <> TInstallCase.icNone then
+  begin
+    frmStartInstallNow := TfrmStartInstall.Create(nil, EInstallScenario);
     try
       if frmStartInstallNow.ShowModal = mrOk then
         InstallNow := True
@@ -839,18 +856,23 @@ begin
     end;
   end;
 
-  if InstallNow = True then
+  // Process installation execution execution path
+  if InstallNow then
   begin
     ShellPath := TKeymanPaths.KeymanDesktopInstallPath(TKeymanPaths.S_KMShell);
     FResult := TUtilExecute.Shell(0, ShellPath, '', '-an');
     if not FResult then
+    begin
       TKeymanSentryClient.Client.MessageEvent(Sentry.Client.SENTRY_LEVEL_ERROR,
-        'TrmfMain: Shell Execute Update_ApplyNow Failed')
+        'TrmfMain: Shell Execute Update_ApplyNow Failed');
+    end
     else
-      ModalResult := mrAbort;
+    begin
       // If a splash screen is currently open when "Install Now" is executed,
       // setting mrAbort ensures the splash screen is closed on the
       // return of "Keyman Configuration".
+      ModalResult := mrAbort;
+    end;
   end;
 end;
 
diff --git a/windows/src/desktop/kmshell/main/initprog.pas b/windows/src/desktop/kmshell/main/initprog.pas
index e5b02c95f4..997b791daf 100644
--- a/windows/src/desktop/kmshell/main/initprog.pas
+++ b/windows/src/desktop/kmshell/main/initprog.pas
@@ -145,7 +145,6 @@ uses
   UILanguages,
   uninstall,
   UpgradeMnemonicLayout,
-  UtilNetworkConnection,
   utilfocusappwnd,
   utilkmshell,
   Keyman.System.UpdateStateMachine,
@@ -670,7 +669,6 @@ function ShouldSendToBUpdateSM(FSilent: Boolean; BUpdateSM: TUpdateStateMachine;
 // UI elements from the state machine we have bring some of logic here.
 var
   frmStartInstall: TfrmStartInstall;
-  IsMetered: Boolean;
   ValidateReadyToInstall: Boolean;
 begin
   ValidateReadyToInstall := BUpdateSM.ValidateReadyToInstall;
@@ -679,8 +677,8 @@ begin
      (FMode in [fmStart, fmSplash, fmMain, fmAbout,
                 fmHelp, fmShowHelp, fmSettings, fmBoot]) then
   begin
-    IsMetered := UtilNetworkConnection.IsMetered;
-    frmStartInstall := TfrmStartInstall.Create(nil, false, IsMetered, ValidateReadyToInstall);
+      // We are ready to install Metered warning not needed even if on Metered connection
+      frmStartInstall := TfrmStartInstall.Create(nil, TInstallCase.icReadyToInstallNotMetered);
     try
       Result := frmStartInstall.ShowModal = mrOk;
     finally