PSoC Designer will not be updated to support Windows 10. Also, if any issues exist with Windows 10, it will not be fixed. Sorry for the inconvenience caused.
How very, very disappointing.
For a couple of years Cypress tells to switch from PSoC1 designs to PSoC4. The roadmap shows absolutely no activities for PSoC1. So why not stop developing for PSoC1 and frezze the porjects, the hex files to program thee chips can be used with any OS.