: It is no longer sold or officially supported by Microsoft, meaning no security updates are provided.
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The first "modern" Office suite with the ribbon interface. Only very early versions (15.13 and earlier) support 10.9.5. Later updates require macOS 10.10 or higher. microsoft office for mac os x 10.9.5 free download
A free cloud-based solution that works well if you have a compatible browser like Firefox or Chrome. Apple Support Community Installing MS Office on Older Mac OS - Microsoft Q&A : It is no longer sold or officially