Due to Apple's new privacy and security measures in the Mac OS file system in their upcoming version 10.15 Catalina. OneDrive can no longer function properly due to no longer having full access the the drive despite enabling full disk access in System Preferences. OneDrive will not be able to locate the main folder due to the 10.15 now having two separate volumes by default. One is for the MacOS system files and the other is your data drive. I'm not sure what other problems are causing OneDrive to not work but I hope it is fixed before 10.15 is released publicly this fall.

I installed the new version of OneDrive for Business (MacOS), with selective sync.
Whenever it got to a ".DS_Store" file, though, it would get "hung up", and would stop syncing. I contacted MS Tech Support and was directed to an article which appeared to be helpful in that it clearly addressed the issue I was experiencing, and eventually was able to get the Mac to complete the sync by deleting the .DS_Store files (which was a bit of a challenge, but I figured it out).

The issue is not just that the Mac won’t sync the “.ds_store” files, but that it gets “stuck” on them and won’t complete the rest of the sync. It seems to me that the “getting stuck” part is something that should be resolved at the software level, rather than at the user level. OneDrive should report the error, of course, but then it should be able to proceed with the rest of the sync, anyway.

*English follows Japanese

■Title(件名)：
Mac PC で作成したエイリアスを OneDrive for Business を経由して他の PC から開いた動作について
Please improve OneDrive for Business sync that synced alias which is created at Mac will be opened properly from another PC

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■Description(内容):
MacのPCで作成したエイリアスを OneDrive for Business に アップロード し、他のPCで同期して開くとターミナルが起動してエイリアスとして機能しない。
他のクラウド製品を使うと正常に動作するため、OneDrive for Business との同期時も、正常にエイリアスが同期され開けるよう改善を希望します。

I uploaded an alias which is created at Mac to OneDrive for business and sync with it from another computer, the alias doesn’t work as it should be because the terminal start running.
This issue is not happened with another cloud products, so I would like you to improve OneDrive for Business sync that synced alias will be opened properly.

There has been a serious memory leak in the OneDrive client for macOS for over a year. There are multiple posts on the OneDrive support forum about this, and I've made multiple support requests all of which have come to naught.

The symptoms are quite simple - on machines running Sierra and High Sierra the OneDrive client's memory foot print grows without ceasing over time, eventually causing the host machine to run out of memory. See attached image for memory footprint on a High Sierra running MacPro after 7 hours 39 minutes from a cold boot ,with OneDrive (latest version) running as a login in startup item.

Why this is not something that MS is prepared to fix is a mystery - but in the latest attempt to get some support the suggestion has been made that the only way to get this fixed is to propose it as a 'feature request'.

In what universe "fixing the software" is a feature request?

Anyhow - request made.

I would like to ignore certain folder patterns in a `Projects` folder I would like to sync with OneDrive. Allowing the use of a customizable text file to sit in the root of the OneDrive sync folder would allow me to create a match pattern to ignore particular folders and files similar to .gitignore file permit.

Example:

.onedriveignore
-----------------
photography/*/RAW
photography/*/edits

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This would ignore all photos in `RAW` and `edits` and only sync the customer finals. However, for another project, the customer may want to pay for access to different files and thus would need to alter the ignore file to allow for edits to be synced.