Yes, you have an older PC (4GB RAM, 32-bit Windows 10) that cannot run Microsoft 365 smoothly. Office 2016 is stable, lightweight, and includes all core features (Word, Excel, PowerPoint, Outlook). However, it no longer receives security updates (after October 2025), so using it offline or behind a firewall is recommended.
Microsoft Office 2016 Free Download 32-bit and 64-bit: Official Options and Support Status
Risks of unofficial "free" downloads
It is important to note that Microsoft has officially ended "Mainstream Support" for Office 2016, though it remains under Extended Support
Yes, but you cannot simply "upgrade." You must uninstall the 32-bit version completely and then install the 64-bit version.
Before providing the article, a critical note for your safety: Any website offering a cracked, pre-activated, or "full version for free" is almost certainly distributing malware, ransomware, or spyware.
Understanding the difference is crucial before you download.