Cubase 10 is the last supported Cubase version for Windows 7. It needs an e-licenser to work. I’m not sure how this works nowadays, since Steinberg switched to another activation system which is software-based with the introduction of Cubase 12. I think you’d need to buy a Cubase 12 license so that you can download and run Cubase 10, but I’m not sure if you still can get a valid license for the e-licenser.
Following my last post, this is stated in the licensing FAQs on Steinberg’s website:
After I update to Steinberg Licensing, will I still be able to run previous versions of the products I’ve bought?
Yes, provided you either have your USB-eLicenser connected to your computer, or the Soft-eLicenser containing the license for the previous version of the product is present on the computer. The new Steinberg Licensing system does not apply to versions of our products prior to the first version that uses the new system: so if you buy, say, a new license for Cubase 12 as a brand new customer, you cannot run Cubase 11 or earlier, but if you are an existing Steinberg customer who updates to Cubase 12 from Cubase 11, you can still run Cubase 11 or indeed any previous version of Cubase provided you connect your USB-eLicenser containing the license for Cubase 11.
I use 10.5. I’m happy using windows 7 too. Planned obsolescence is a bummer, why can’t we all upgrade on platforms we have all bought with hard earned money? I also bought a cheap iMac and got around all those issues and use Logic Pro x as well.