ActiveX is a 32-bit technology. It often fails or disappears if you are running the 64-bit version of Office .
"I think we need to reinstall it," Mark said. "But I don't have the installation file. Can you find it and get it working?" Microsoft Barcode Control 16.0 Activex Download
Any website offering a direct "Microsoft Barcode Control 16.0 ActiveX download" as an isolated .exe or .ocx file is either: ActiveX is a 32-bit technology
is an ActiveX component originally bundled with Microsoft Office (particularly Access, Excel, and Word) and older versions of Visual Studio. It allows developers to generate barcodes (such as Code 39, Code 128, UPC-A, etc.) directly within forms, reports, and VBA applications. etc.) directly within forms