ERROR_DDE_FAIL when calling ShellExecuteEx with URL in InnoSetup Scripts

ERROR_DDE_FAIL when calling ShellExecuteEx with URL in InnoSetup Scripts

(dll/win32/kernel32/client/except.c:728) Delphi Exception at address: 00484E07
(dll/win32/kernel32/client/except.c:729) Exception-Object: 00632EC8
(dll/win32/kernel32/client/except.c:730) Exception text: 49f000
err:(win32ss/user/user32/windows/messagebox.c:1048) MessageBox: L"Unable to execute file:\r\nhttps://www.kcsoftwares.com/?page=postinstall&sw=SUMo\r\n\r\nShellExecuteEx failed; code 1156.\r\nERROR_DDE_FAIL - An error occurred in sending the command to the application."