I've noticed a bug on multiple instances in our environment. Syncing with a SharePoint site, using OneDrive build 18.091.0506.0007 and running on Windows 10 Enterprise b1709 and b1802.

With Files On-Demand enabled, and when navigating to any folder in the site, it automatically downloads the files in that folder even though none were set to 'Always Keep on this Device'. Also, when right clicking these files and clicking 'Free Up Space', it switches back to the cloud (online only) and one second later, re-downloads them.

Tested on a newly imaged machine with no other software on it. Windows Defender isn't actively scanning and I've excluded this folder to test if it's interfering.

OneDrive has a horrible habit of restoring long deleted files and I know the cause. I commission one of my clients laptops manually and therefore logon as my account to install software. OneDrive is synchronised on this computer. I then typically don't logon for months but when I do, OneDrive assumes that the files found locally are new and re-synchronises them back even though they were deleted afterwards on another computer. This might not seem like a big problem except today is restored an old script with a similar name which had been deleted. I didn't spot this and ran the wrong script and bang - trashed machine! OneDrive has a fundamental flaw in going back to old installations esp. when restoring images/VM snapshots.

When I am on a metered connection, OneDrive pauses syncing, which is great in principle. One consequence of this, however, is that I can no longer new folders and files created by office applications in OneDrive folder. For example, if I create a new file or folder in Word or Excel, I cannot even find it with the File Explorer! The only way I can access it, for example to attach it to an e-mail, is through the office application concerned and by saving it in another spot, say, the desktop.
This is a very annoying bug that makes OneDrive next to useless when working on a metered connection. As the file is clearly being saved locally (otherwise I could not reopen it by following the recent files list in Office), it should be not too much to ask to keep it visible in File Explorer.
Please fix!

Problem-1 is as follow:
1. OneDrive does not sync files larger than 3 GB
2. OneDrive does not always sync files between 1.5 and 3 GB. 10-20% goes through and 80-90% goes in circle. Circle means it sync the file until the end, and then it start all over again and it sync the same file again and again and again…..
3. OneDrive does not sync always files between 1 and 1.5 GB. 50% goes through and 50% goes in circle. Circle means it sync the file until the end, and then it start all over again and it sync the same file again and again and again…..

The problem we found was as follow:
The same server, and the same folder was previously synced with OneDrive from Office 365 Home Edition. And now we are syncing the same folder with OneDrive of Office 365 Business edition, and apparently this is causing a conflict that we were not able to find due to it will take more time than it is worth it.

The workaround
I created a new account on our server and used this new account to sync the same folder with the same structure as before, and it works perfectly, no more circling and all files goes through 100%, including ISO files that are up to 6 GB and ZIP files that are up to 12 GB.

Problem-2. small problem that I was not able to figure out why it is happening. Every a couple of hours or so, the sync stops for around 5-30 minutes and then it continue by itself. Sometimes I just pause it and immediately restart it and then it keeps on going. But this is not a huge problem, except at the initial sync, where around 600 GB are being synced and that can take around 10-14 days, during this period it pauses by itself, which it delays the overall sync by around 2-4 hours per day= around 2-4 days. But after the initial sync, then the update is always minimal. So no problem I can live with this un wanted pauses.

I worked on Problem one for 3 weeks with OneDrive Technical support until we were able to pin point the problem and use the workaround.

At the outset I regret to inform that the recent Microsoft products , let it be Windows OS, Office 365 , Skype and many other tools which I use for my daily work is full of BUGS. MS software has pathetic quality now a days. I will have to write a book instead of this post to list the MS bugs which I notice in my day to day work.

The latest one being synchronisation bugs in the much hyped OneDrive. My taskbar status icon tells me that "All files are in sync". However, when I open the sync folder through Windows Explorer, I can see many folders with status "Sync pending". Which one should I believe? I know that I can use one drive web to check the files were synced or not. But it would take hours worth of efforts since I have many files and folders which I sync with One drive for Business. Any immediate help would be highly appreciated.

Th onedrive client is like a formula 1 (server side) with the tyres of a bike.
I have the client costantly crash 5/10 times a day.
Cannot examine log files. Are not in plain text. Why did you choose to use a so unuseful way to log activities ?
The client always crash when i add a lot of files to a synced folder.
i had to upload a subdirectory to onedrive server via webdav because the client could not accomplish this result.
Please restart this crayy software form scratch and build something useful for your users.
Btw i have office subscription with 1tb onedrive.

I use Onedrive with my team for "AutoCAD Xref system" and many time Onedrive stuck with sync problem.
it always shows "looking for change" or "processing change".

what I can do is only "unlink this PC and relink it again"

After that the files are flooded to every people pc with the suffix like "-pc name" which cause the problem with AutoCAD Xref because we have to check in every single file "which file from which PC" is the most current one that we have to remove suffix "-pc name" and replace it back to our Xref system.

It takes too much time to recheck the drawing of 50 storeys building and it is a big pain to our project and Onedrive reliability. This problem never happens with Dropbox.

Onedrive team should fix sync problem ASAP.