macOS 12.3 Will Include Cloud Storage Changes Affecting Dropbox and OneDrive
Dropbox today announced that users who update to macOS 12.3 once that software version becomes available may temporarily encounter issues with opening online-only files in some third-party apps on their Mac.

In a support document and an email to customers, Dropbox said it is actively working on full support for online-only files on macOS 12.3 and will begin rolling out an updated version of its Mac app to beta testers in March. In the meantime, Dropbox users who update to macOS 12.3 will still be able to open online-only files in Finder.
Dropbox did not provide any further details, but Microsoft recently said macOS 12.2 will be the last version that supports its own cloud storage service OneDrive's current online-only files implementation. Microsoft said OneDrive will be getting a new online-only files experience that is "more integrated with macOS" and "will have long-term support from Apple," adding that the current version is built on several technologies that are "now deprecated."
Altogether, it appears likely that Apple has given cloud storage services like Dropbox and OneDrive advanced notice about system-level changes that will affect online-only files starting with macOS 12.3. We've reached out to Apple and Dropbox for further details, but so far have not received any additional information.
Apple will likely release macOS 12.2 within the next week or so, and then macOS 12.3 beta testing should begin shortly after that.
(Thanks, Brad!)
Popular Stories
Apple today introduced its first two physical products of 2026: a second-generation AirTag and the Black Unity Connection Braided Solo Loop for the Apple Watch.
Read our coverage of each announcement to learn more:Apple Unveils New AirTag With Longer Range, Louder Speaker, and More
Apple Introduces New Black Unity Apple Watch BandBoth the new AirTag and the Black Unity Connection Braided...
Apple today introduced the second-generation AirTag, with key features including longer range for tracking items and a louder speaker.
For those who are not familiar, the AirTag is a small accessory that you can attach to your backpack, keys, or other items. Then, you can track the location of those items in the Find My app on the iPhone, iPad, Mac, Apple Watch, and iCloud.com.
The new...
Alongside iOS 26.2.1, Apple today released an updated version of iOS 12 for devices that are still running that operating system update, eight years after the software was first released.
iOS 12.5.8 is available for the iPhone 5s and the iPhone 6, meaning Apple is continuing to support these devices for 13 and 12 years after launch, respectively. The iPhone 5s came out in September 2013,...
2026 promises to be yet another busy year for Apple, with the company rumored to be planning more than 20 product announcements over the coming months.
Beyond the usual updates to iPhones, iPads, Macs, and Apple Watches, Apple is expected to release its all-new smart home hub, which was reportedly delayed until the more personalized version of Siri is ready. Other unique products rumored for ...
Apple plans to release new MacBook Pro, MacBook Air, Mac Studio, and Studio Display models in the first half of this year, according to Bloomberg's Mark Gurman.
In his Power On newsletter today, Gurman added that redesigned MacBook Pro models with an OLED touch screen "should be hitting toward the end of 2026," meaning that the MacBook Pro line would be upgraded twice this year.
First up...