If your SolidWorks versions crash immediately upon opening, the cause is that SolidWorks 3DMarketplace is preventing SolidCAM 2025 SP4 HF1 from starting. To solve it, follow the steps below:

Go to the location Computer\HKEY_CURRENT_USER\SOFTWARE\Solidworks in your Registry Editor.

Delete folder AddInsStartup.

Then go to this location Computer\HKEY_LOCAL_MACHINE\SOFTWARE\SolidWorks\AddIns

Go to all folders looking similar to this {B25A676F-52F1-4886-8004-ABEB9201F4D7} and try to find