How to upload files to an Office 365 Group?

Each office 365 Group comes with its dedicated 25 TB of OneDrive storage space. This space is completely separate from the 1 TB of OneDrive space allocated to each Office 365 user. Any folders and files that are uploaded to that space, will be automatically shared with all members of the group. They will be able to view and edit these files by default. If needed, the group's administrator(s) are able to change default sharing settings on folders or individual files to limit group's members access, for example to allow read access only or to share a folder with only a subset of group's membership. You can also share individual folders and files stored on group's OneDrive with people outside of the group, including people outside of the University.

There are twp ways to upload files and folders to group's Files area (OneDrive):

1. Using the web interface (Upload button), works best in Google Chrome and MS Edge browsers

2. Using the OneDrive Sync Client


Uploading Files Using the Upload Button (Web Interface)

This is the simplest way to upload files to the group's OneDive, but there are some limitations associated with this method that you need to be aware of before you proceed:

  • Uploading folders. If you want to upload the entire folder of files using the Upload button, you will only be able to do this successfully using Google Chrome or MS Edge browsers. This feature does not work properly in Internet Explorer and Mozilla Firefox.
  • Nested folders. You should not use this method to upload folders that are nested several layers deep (ie. contain many levels of subfolders). This is because you will most likely hit the limitation of total allowable file path length being 256 characters. Microsoft committed to removing this limitation some time in 2017.
  • File names. This method is the best when you try to upload a single file, or a folder with a small number of files with file names that do not contain any illegal characters, such as "#", "?" or "%".

To upload files using this method:

1. Launch Google Chrome browser, go to and sign in.

2. Open your group by clicking on group's name on the left.

3. Click on the Files on the menu ribbon on the top.

4. Locate and click the Upload button:

5. Select a folder or file that you want to upload form your C drive or any network drive.


Uploading Files Using the OneDrive Sync Client

If you have the latest version of the OneDrive Sync Client installed on your computer, you can use it to sync group files in addition to your OneDrive files. Once you add your first group library to the Sync Client, an additional blue cloud icon will appear in your Windows system tray, and your Windows Explorer Favourites section will now include the Sharepoint icon:

1. Open File Explorer, click on "University of Windsor" (as shown above), then open a folder corresponding with the Office 365 Group where you wat to upload your files.

2. Open a second File Explorer window and position both windows side by side to allow you to see the contents of both windows at the same time and perform drag and drop operations between these windows.

3. In your second File Explorer window, select one or multiple files or folders on your C drive or any network drive that you want to upload, then right-click on your selection and select "Cut" from the pop-up menu. 

4. Right-click in the files area in your first File Explorer window, and select "Paste" from the pop-up menu. This will move all of the folders and files that you selected in your second window to your first window, and trigger the OneDrive Sync software to seamlessly upload these files to the cloud in the background.

Getting Additional Assistance

If you run into any issues while uploading files to your group, or need our assistance with this process, please click here to open a ticket.

For more information on Files area of Office 365 Group, please review this Microsoft article: