Products that can have multiple installations with different major versions do not always support major upgrades, or the ability to upgrade between major versions as a single operation.
In this case, SolidWorks Installation Manager simulates the upgrade by first installing the new version, then removing the old one. At this time, the core SolidWorks product supports major upgrades, while the other products do not.
The consequences of this are:
When upgrading the core SolidWorks product between major versions:
Your existing installed location does not change.
- The upgrade can be rolled back if an error occurs or the you cancel during the upgrade.
When other products are upgraded between major versions:
Each product is first installed as a new product to a new location, then the original installation is removed.
- Once started, the upgrade cannot be rolled back if an error occurs or if you cancel during the upgrade.