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.

General Dropbox Feature
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!)

Related Forum: macOS Monterey

Popular Stories

Home Hub Command Center with Dome Base Feature

Apple Working on All-New Operating System

Saturday August 16, 2025 6:45 am PDT by
Apple is developing an all-new operating system codenamed "Charismatic," according to Bloomberg's Mark Gurman. Apple smart home hub concept This is likely Apple's long-rumored "homeOS" operating system. In a report this week, Gurman said both Apple's rumored smart home hub in 2026 and tabletop robot in 2027 will run the new operating system. He said the software platform will blend...
apple beta 26 lineup

Mark Gurman Responds to Last Week's Apple Device Leaks

Sunday August 17, 2025 7:03 am PDT by
Last week, Apple released and then pulled a software tool that accidentally contained identifiers for many unreleased devices and chips, according to MacRumors contributor Aaron Perris. His findings included new models of the Studio Display, Apple TV, Apple Watches, Apple Vision Pro, iPad mini, HomePod mini, and more. Here is what was uncovered in the file, according to MacRumors contributor ...
iOS 26 Feature

Here's Everything New in iOS 26 Beta 7

Monday August 18, 2025 11:59 am PDT by
The seventh developer beta of iOS 26 is now available. While we are now in the later stages of the iOS 26 beta cycle, there are still some changes. Below, we outline everything new that we have found in iOS 26 beta 7 so far. Redesigned Blood Oxygen Feature The seventh developer betas of iOS 26 and watchOS 26 include a redesigned Blood Oxygen feature on Apple Watch Series 9, Apple Watch ...
iPhone 17 Pro in Hand Feature Lowgo

iPhone 17 Pro Max's Internal Design With Metal Battery Allegedly Leaks

Friday August 15, 2025 9:13 am PDT by
Alleged images of the iPhone 17 Pro Max's internal design have surfaced, offering a potential look inside the device before it is announced by Apple next month. The images were shared by the account "yeux1122" this week, in a blog post on the Korean platform Naver. The account aggregates Apple rumors and leaks, so it is likely not the original source of the images, and it is unclear if they...
iPhone 16

No iPhone 18 in 2026, Another Report Claims

Monday August 18, 2025 7:34 am PDT by
Apple is expected to delay the launch of its base iPhone 18 model until spring 2027, marking a major shift in the company's long-established release cycle, according to South Korea's ETNews. The report claims that Apple has informed some of its suppliers that the iPhone 18 will not be part of the September 2026 iPhone lineup. Instead, the company will unveil only higher-end models in the...
Apple Watch Ultra 2 Complications

Apple Watch Reportedly Set to Receive 'Significant Redesign' Next Year

Friday August 15, 2025 1:31 pm PDT by
At least one new Apple Watch model launching next year will feature a "significant redesign," according to Taiwanese supply chain publication DigiTimes. In a paywalled report this week, citing supply chain insiders, DigiTimes claimed that a high-end 2026 Apple Watch model will feature "exterior design" changes, including but not limited to "eight sensors arranged in a ring pattern visible...
apple design award 2025

Apple Announces 2025 Design Award Winners Ahead of WWDC 2025

Tuesday June 3, 2025 10:14 am PDT by
As we wait for WWDC to kick off next Monday, Apple today announced the winners of its annual Apple Design Awards, recognizing apps and games for their innovation, ingenuity, and technical achievement. The 2025 Apple Design Award winners are listed below, with one app and one game selected per category: Delight and Fun - CapWords (App) and Balatro (Game) Innovation - Play (App) and PBJ -...

Top Rated Comments

kalafalas Avatar
47 months ago
I've been running the M1 native version of one drive since the beta came out, which includes the modern finder integration and I can say that it is AWESOME. no longer is one drive using tons of CPU and all the online vs local etc is native to finder similar to iCloud Drive, its a great upgrade!
Score: 18 Votes (Like | Disagree)
Kylo83 Avatar
47 months ago
I wonder what 12.3 will include to change this
Score: 9 Votes (Like | Disagree)
Mainyehc Avatar
47 months ago
This is a massive flustercuck on the part of Apple.

Their new little idea just screwed up my entire OneDrive workflow, because, guess what, I actually like having big external drives connected to my Macs and my entire OneDrive file structure ALWAYS available offline.

Here's the thing: with this newfangled API, not only the OneDrive folders look ridiculously amateurish (they are basically aliases, while the cache is the old folder, except renamed as “.ODContainer-OneDrive”, but the path given to the files is stored at ~/Library/CloudStorage, whether these two are on the same physical volume or not, but… users aren't exactly warned about that change at all) ALL files are treated as if they were only available on-line, whether they are cached locally or not, which means… NOTHING “Mac-like”/native works. No custom icons, no file tags/labels, no QuickLook… A complete, unmitigated mess. I don't know who screwed the pooch on this one, but I'm not about to sit idly by waiting for them to sort out this mess.

So what did I do? I immediately called Apple Care and demanded them to escalate this to Engineering at Cupertino, which I suspect they eventually will. I have a scheduled call on February the 5th with the same expert that answered me (she even knew from memory – or was a really fast researcher – that the equivalent iCloud solution by Apple stores stuff in ~/Library/Mobile Documents, so I'd say she was pretty knowledgable about the inner workings of macOS), so that we may produce a proper feedback report, complete with user logs and whatnot.

Then, I proceeded to shut down all instances of OneDrive, turn on hidden file view on the Finder (by pressing Command+Shift+period) and MOVE the whole shebang into my unlimited storage, academic Google Drive account. I'm giving up auto-save and one-click versioning access in Office365 apps, but honestly, considering how I already have a Time Machine backup drive permanently attached… Good riddance!

But Apple isn't getting away with this anyway… Why they would turn on this API mid-cycle, on a point update focused on an EXTREMELY important Safari security patch, instead of on a major 1x.0 version, when users kind of expect this level of disruption by default, is beyond me. This isn't added functionality, this is a functionality-breaking API change, and it's extremely bad form.

If Apple forces Google Drive to adopt this and messes that solution up as well, I'm gonna go mediaeval on them. I am, however, a bit optimistic; it's almost as if Google engineers knew – and cared about – just how bad the API was and, when forced to move away from the old one – which might explain why they changed their app from “Google Backup and Sync” back to “Google Drive”, but maybe that was just a happy coincidence – they just came up with their own custom thing… which I'm still not a huge fan of (those stupid “virtual connected server” links it creates on the sidebar every time it loads really nag me), but considering how the file structure still works and feels completely native, screw it. It's now my go-to solution for cloud storage, and I hope it stays that way.
Score: 8 Votes (Like | Disagree)
jacg Avatar
47 months ago
I wonder if this will affect Google Drive?
Score: 7 Votes (Like | Disagree)
MrGimper Avatar
47 months ago
Hopefully this OS-level API/support will mean that the Mac version of Synology Drive Client will finally support online files only. About time.
Score: 6 Votes (Like | Disagree)
jeremysteele Avatar
47 months ago

The codes I changed in VS Code on my Mac almost reflect immediately on my work PC, which is on the other side of the globe.
For the love of all that is holy, please use a tool like git, svn, mercurial, etc. Do not use file sync services to share source code between machines.
Score: 6 Votes (Like | Disagree)