Microsoft is set to disable or limit the functionality of Office 2019 for Mac next month, with some outlets reporting that the software will become read-only, while others indicate that users will be locked out of editing altogether. The change is expected to affect not only Macs, but also older iPhones and iPads. The extent of the impact on users' ability to create or edit Office documents on these devices is consistent across reports, with all indicating a significant loss of functionality.