Microsoft allows you to use your Office 2010 product key to install Office 2021 or Microsoft 365? No. Those are different licenses. However, if your key is from a work/school account, you might have downgrade rights to install Office 2019.
If you absolutely must run that old ISO:
Do not install this on your main Windows 11/10 machine connected to the internet. Microsoft Office 2010 Professional Plus 64-bit Iso Download
No. Unless you are a legacy enterprise running Windows 7 embedded systems in a factory disconnected from the internet, downloading the Microsoft Office 2010 Professional Plus 64-bit ISO today is an unnecessary risk.
During the Office 2010 era, Microsoft strongly recommended the 32-bit version for most users. However, the 64-bit version was essential for specific scenarios: Microsoft allows you to use your Office 2010
The Warning: Microsoft warned that 32-bit ActiveX controls, legacy add-ins, and certain legacy VB scripts would break in the 64-bit version. Today, many of those add-ins no longer exist, but if you rely on old macros, test first.
If you have a legitimate Volume License Key (VLK) or Retail key from your old MSDN subscription, here is the safest workflow. The Warning: Microsoft warned that 32-bit ActiveX controls,
As of 2025-2026, Microsoft has completely purged Office 2010 direct download links from its mainstream public servers. Why?
If you have a valid, unused product key: You can no longer download the official ISO directly from Office.com. You would need to use the "Microsoft Software Download" page for legacy media, which currently only offers offline installers for Office 2013 and later (via specific back channels). For Office 2010, the official digital locker is closed.