R 4.4 code base still conservatively uses features of Windows 7 andlater only when available, and otherwise falls back to older features, so itmight still run on 7, but this is minimally tested (see Q2.2), and the codeis tuned for newer systems. Some performance work-arounds for old Windowssystems past their end of support may be removed, such as a custom memoryallocator removed in R 4.2.