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.

Your Windows 10 thumbnails may seem slow to load, or they may never appear. If this happens, there's a fix. News. ... Step 1: Open File Explorer. From the main menu select View.

However, in Windows Explorer, the preview of the 3D model is not displayed as a thumbnail, and you cannot judge what kind of file it is unless you judge it from the file name or open it once with ...