I have SW from 2015 to 2018 installed but there is only one option SW2016
How to include all options in "open with"
You should be able to resolve this through Control Panel > Default Programs.
Or, in SOLIDWORKS > Tools > Options > Explorer > Restore File Associations.
Alternatively, a repair of the SOLIDWORKS software may do this for you to.
thank you - it works
Retrieving data ...