mac migration not finding windows pc on network

Hi sunflower1965, thank you for posting here in Apple Support Communities. We understand that you're looking to migrate data between your Mac computer and your Windows PC, but the Windows PC isn't showing up on your network. You've come to the right place, we'd be happy to help look into this with you. We also see that you've linked to Apple Support Communities through the following resource. By any chance, were you able to perform each step as they're outlined: Move your data from a Windows PC to a Mac - Apple Support

Aside from connecting both the Mac and Windows computers to the same Wi-Fi network, have you tried connecting them together through a hardwire option?

If you've already performed each step provided in that resource, including connecting both computers through a hardwire, the next best step would be to connect with Apple Support for further assistance. Here's how: Apple - Support - Product Selection

Take care!