: SOLIDWORKS includes a tool that automatically checks for features incompatible with the older version. You may need to remove or modify these features before the save is successful.
Why? Because the SolidWorks file structure ( .sldprt , .sldasm , .slddrw ) is not a simple document like a PDF. It is a proprietary, parametric, feature-rich database. When you save a file in SolidWorks 2026 (hypothetically), it contains mathematical instructions for features (like "Boundary Boss" or "Intersect") that simply do not exist in the code of SolidWorks 2023. solidworks future version file converter
You will find websites claiming to sell a "SolidWorks Version Converter." Be extremely wary. Most of these are: : SOLIDWORKS includes a tool that automatically checks
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