I am now using 2017 SWX but a 2016 SWX folder is still there even though before installing SWX 2017, I uninstalled SW 2016 and reboot the system. Is it good to delete it to prevent any unforeseen problems?
your best bet is to do a clean uninstall of solidworks and start from the beginning
In SW2017, check Tools > Options > File Locations > Design Library
you may find it points to this 2016 folder, so you may need to relocate it. Also in the same options screen click "Edit All" and see if any other file location points to this 2016 path- again change any of these to 2017 and then you can safely delete the folder.
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