Using Word 2007 Barcode Add-In on Windows XP

Consider this tip if the barcode add-in TBarCode Office fails on Windows XP and Word 2007.
Most likely you need to install the Primary Interop Assemblies (PIA) manually. These assemblies can be downloaded as an extra package from Microsoft: Primary Interop Assemblies
Install PIA, then start Microsoft Word 2007 and open the Word Options.

Switch to "Add-Ins", select "Manage: COM Add-ins" and click on "Go...". In the "COM Add-ins" dialog mark "TEC-IT TBarCode Office (Word Add-In)" and confirm the dialog with OK.

After restarting MS Word the Add-Ins tab will appear and the TBarCode Office Add-In will be available.