2026.7.13 Older Versions of OneNote on macOS, iPad, and iPhone will become Read-Only
Starting July 13, 2026, some users may notice that Office apps (Word, Excel, PowerPoint, Outlook, or OneNote) can open and print files, but cannot edit, save, or create new files – called “reduced functionality mode”. This happens when support for Microsoft Office apps is no longer continued for older operating systems or devices.
This issue affects both Microsoft 365 subscribers on macOS, iPhone, and iPad, and those with non-subscription software, including Office 2021 or Office 2019 on macOS. For most users, updating your OS, and updating your apps will resolve it.
Phenomena and Responses
- Effective date: July 13, 2026
- What you’ll experience: You can open/view/print, but you can’t edit or save
- How to resolve: Update your OS first, then update your Office apps to supported versions