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I want my program (developed with Delphi 10.3) to show a different taskbar icon depending on the database it is working on.

I use this code in my OnCreate handler (the DBCompany and CompanyIconFile variables are loaded from an INI file):

procedure TFrmMain.FormCreate(Sender: TObject);
var
  IcoFile: string;
begin
  Application.Title := DBCompany + ' ' + Application.Title;
  IcoFile := CompanyIconFile;
  if FileExists(IcoFile) then
  begin
    Application.Icon.LoadFromFile(IcoFile);
    Self.Icon.LoadFromFile(IcoFile);
  end;
end;

This works as it should on Windows 7, Windows 8, Windows 10: the taskbar shows the company's icon.

On Win 11, it doesn't work. Instead, the Win 11 taskbar always shows the icon that I assigned to the application in the Delphi project options.

I restarted the Win 11 computer, so it could not be the icon cache (?).

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  • 3
    ...and what makes you sure both FileExists() and .LoadFromFile() succeed? Commented Feb 20, 2024 at 12:30
  • Well, a) I know that they are there, b) I verified by single stepping and c) I copied all files and directories directly to a Windows 10 Computer and there it works. Commented Feb 22, 2024 at 7:09
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