The compatibility answer
The official comparison page lists Windows 11, 10, 8, and 7, with 32-bit and 64-bit editions. The support guide says the Windows download is a combined installer that selects the appropriate architecture during installation.
Check the older PC before paying
Compatibility on paper is not the same as a successful daily workflow. Install the current trial on the exact PC and open the largest documents you plan to use.
- Confirm Windows is fully updated
- Leave at least the documented disk space plus room for working files
- Open a long PDF and a scanned PDF
- Test printing and saving to the intended folders
Which licence row to choose
Choose a Windows single-platform plan when the licence will stay on Windows. Do not pay extra for cross-platform access unless the same account also needs Mac or mobile devices. Confirm the device count and one-time versus subscription label in the live checkout.
Sources checked
Product details can change. These official pages were checked for this buying decision:
Official download and system supportOfficial feature guideOfficial features and system requirements comparisonOfficial plans and payment methods