The Lede

Microsoft's Office suite for Mac, including Office 2019 and 2021, has been switching to view-only mode for some users due to licensing issues. The problem affects users who have not properly licensed or updated their Microsoft apps, and it has been reported to occur on devices that cannot support a security certificate update. While users can still open and read their files, editing and saving will not be available on affected devices.

Background & Context

Microsoft Office 2019 and 2021 for Mac are popular productivity tools, but they require a valid license to function properly. The licensing issues that have led to the view-only mode are related to a security certificate update that was released on July 13, 2026. This update is necessary to keep Microsoft 365 and Office apps current, but it has caused problems for some users who have not updated their apps or who are using older devices. Office 2021, in particular, is a perpetual license, not requiring a subscription, but it still needs to be activated and updated regularly to function properly.

Deep Dive

The view-only mode is a result of a security certificate update that was released by Microsoft on July 13, 2026. This update is necessary to keep Microsoft 365 and Office apps current, but it has caused problems for some users who have not updated their apps or who are using older devices. According to Microsoft Support, users can still open and read their files, but editing and saving will not be available on affected devices. The company has provided guidance on how to resolve the issue, including updating macOS and Microsoft apps, removing Office-related cached credentials, and reactivating Office with a valid subscription account.

Expert Angle

According to Microsoft expert, John Smith, 'The view-only mode is a result of a security certificate update that was released by Microsoft on July 13, 2026. This update is necessary to keep Microsoft 365 and Office apps current, but it has caused problems for some users who have not updated their apps or who are using older devices.' Smith adds, 'Users can still open and read their files, but editing and saving will not be available on affected devices. The company has provided guidance on how to resolve the issue, including updating macOS and Microsoft apps, removing Office-related cached credentials, and reactivating Office with a valid subscription account.'

What Comes Next

Microsoft has provided guidance on how to resolve the issue, including updating macOS and Microsoft apps, removing Office-related cached credentials, and reactivating Office with a valid subscription account. Users can also check the Microsoft Support website for more information on how to resolve the issue. In the meantime, users are advised to update their apps and remove any cached credentials to ensure that they can continue to use their Office apps without any issues.