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, see steps below:

You will require full Admin rights for the PC in question.

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

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 folder responsible for 3DEXPERIENCE Marketplace. Then set the value
(Default) from one to zero: