There is no official version of Microsoft Office Professional 2017. Microsoft did not release a standalone suite that year; they focused instead on updating Office 365 (now Microsoft 365) and Office 2016.
Yes, Microsoft offers a completely free, browser-based version of Office. You do not need a product key. You don’t even need to download anything. microsoft office professional 2017 product key free
If you see websites offering "free product keys" for this specific version, it is highly likely a scam or a delivery method for malware. Review Summary: "Microsoft Office 2017" There is no official version of Microsoft Office
⭐ Key Tip: Use the Alt + Windows + Ctrl + Shift shortcut on your Windows PC to quickly open the free web version of Office. To help you get the right tool, Office Home & Student 2021 (around $150) —
What is a Product Key?