MC1311701: Microsoft 365 apps on Mac and iOS require updates before July 13, 2026, due to certificate expiration
Microsoft 365 apps on Mac and iOS must be updated by July 13, 2026, to avoid read-only mode due to certificate expiration. Supported versions require macOS 12+, app version 16.83+ (Mac), iOS 17+, app version 2.93+ (iOS). Updates ensure full functionality without data loss.