This post talks about what is an STP file and how you can open such files in Windows 11/10. STP or STEP is a 3D assembly file saved in Standard for the Exchange of Product Data (STEP) format.
You can use the Microsoft Outlook application to view vCard or VCF files in Windows 11/10. It provides you with a dedicated option to import a VCF file and view it. Here are the steps you can follow ...