Microsoft 365 for Mac

Office 2019 / Microsoft 365 for Mac not working on older MacOS versions

July 14, 2026

Many users are reporting that Microsoft Office 2019 for Mac or Microsoft 365 for Macnot working on older MacOS versions i.e. a 0x0 activation error

June 10, 2026

Use this simple guide to Install Any Older Version of Microsoft 365 easily on macOS If you have a legacy Apple device, you can install