Office 365 Download (Microsoft 365) — Install on Windows, Mac & Offline Installer (2026)

Office 365 is now called Microsoft 365 — same apps, same installer. Downloading it takes two minutes if you know where to click, and there are exactly three official paths: the office.com installer (needs a subscription or trial), the free web apps, and the offline installer for slow/managed networks. All three below.

Office 365 / Microsoft 365 download — all official paths

Install steps (Windows or Mac, 5 minutes)

1. Go to office.com, sign in with the account that has the subscription (work or personal).
2. Click Install apps → Microsoft 365 apps. On Mac this hands you a .pkg; on Windows a streaming installer.
3. Run it. Coffee-length wait. Open Word, sign in once — that activates everything. No product keys anywhere in this flow.
4. Repeat on up to 5 PCs/Macs + 5 tablets + 5 phones per user — every Microsoft 365 plan includes that.

Which subscription do you need?

• Business Basic — web + mobile apps only, no desktop installer. Cheapest email+Teams play.
• Business Standard — adds the desktop apps this page is about. The plan most people mean by "Office 365".
• Business Premium — Standard + Intune/Defender security stack.
• Compare every SKU side by side in our license comparison tool, or India pricing at Microsoft 365 India.

Common install failures (and the 30-second fixes)

• "Install apps" button missing — your plan is web-only (Business Basic/E1), or your admin disabled self-install. Fix: upgrade plan or install via config.office.com deployment.
• Error 30015 / stuck at 0% — old Office remnants. Run Microsoft's official uninstall tool (SaRA), reboot, reinstall.
• "Unlicensed product" after install — signed into the wrong account inside the apps. File → Account → sign out, sign in with the subscription account.

FAQ

Is Office 365 the same as Microsoft 365?

Yes — renamed in 2020. Same apps, same installer, same subscriptions. Search habits kept the old name alive.

Can I download Office 365 for free?

Desktop: only via a 30-day trial (no-credit-card option here). Web versions: free forever with a Microsoft account.

How many devices can I install Office 365 on?

5 computers + 5 tablets + 5 phones per user, on every Microsoft 365 subscription. Deactivate old devices at account.microsoft.com if you hit the cap.

Where is the Office 365 offline installer?

office.com → Install apps → Other install options → "Office offline installer" — downloads a full disk image; useful for slow links and imaging machines.