Data Backed Up in Microsoft 365

The following sections describe the Microsoft 365 data protected by the Barracuda Cloud-to-Cloud Backup.

Exchange Online

Barracuda Cloud-to-Cloud Backup automatically backs up Microsoft 365 Exchange Online mailboxes that meet one of the following criteria: 

• The mailbox belongs to a standard user (not a guest), and: 

  • The user account is enabled, and 

  • The account has an active Exchange license, with at least one Exchange plan enabled and successfully provisioned.

OR 

• The mailbox is a shared mailbox. (i.e., its mailbox purpose is set to “shared”) 

Mailboxes that do not meet these criteria, such as guest accounts or unlicensed/inactive users, are excluded from backups. 

Item Type	Item	Backed Up	Restored	Exported	Notes
Content
	Emails
	Calendars
	Contacts
	Tasks
	Notes
	Folders				Includes sub-folders and folder hierarchy. Restored folders are automatically excluded from backups.
Mailboxes
	Primary Mailboxes
	Archive Mailboxes				In-Place or Online Archives
	Group/Team Mailboxes
	Shared Mailboxes

OneDrive for Business

Barracuda Cloud-to-Cloud Backup automatically backs up OneDrive for Business accounts that meet all the following criteria: 

• The user account is enabled (not disabled or deleted). 

• The account is not a guest user.

• The user has an active SharePoint license, with at least one SharePoint plan enabled and has a status of “Success”. 

OneDrive for Business accounts that do not meet these criteria, such as guest accounts, disabled users, or users without a valid SharePoint license, are excluded from backups. 

Item	Backed Up	Restored	Exported	Notes
Files
Folders				Includes sub-folders and folder hierarchy.
OneDrive Accounts
OneNote Notebooks				As of March 31, 2025, OneNote Notebook restores are no longer supported. See How to Export OneNote Notebooks.

Known Limitation

On March 31, 2025, Microsoft OneNote retired app-only authentication for Microsoft Graph APIs (Microsoft Message ID MC1011142). The change was made to enhance data security. Cloud-to-Cloud Backup uses app-only authentication and the specific change from Microsoft removed the ability to create OneNote Notebooks using app-only authentication. As a result of this change, Cloud-to-Cloud Backup will no longer be able to restore OneNote Notebooks to Microsoft 365. However, OneNote Notebooks are still able to be backed up and users can now export OneNote Notebooks from Cloud-to-Cloud Backup as an alternative recovery option. If a restoration attempt is made for a OneNote Notebook, it will fail, and a warning message will be generated in the job report.

SharePoint Online

Component	Backed Up	Restored	Exported	Notes
Document Libraries
Files
Folders				Includes sub-folders and folder hierarchy.
Lists and List Items (Standard)				Includes List permissions. Excludes hidden SharePoint Lists. The following list column types can be restored: Boolean Calculated Choice (checkbox or drop-down menu) Currency DateTime Number PersonOrGroup (Unless it is enabled for multiple people or groups) Text Thumbnail Multiline Text  Lookup (If a “Lookup” column’s reference (source column) does not exist, the column will have empty data.) The following column types are NOT supported:  Geolocation  Hyperlink  Managed Metadata  Picture  Task Outcome  External Data  The following List features are NOT supported:  Attachments to List rows  PersonOrGroup when set for ‘multiple people or groups’  Coloring of “Choice” column options  If the “Title” column was hidden before back up, it will be visible in the restored List
Site Pages				Enable custom script for the site(s) you are trying to restore data from using this article How to Enable Custom Script for SharePoint. Note that it can take up to 24 hours to take effect.
Sites and Subsites				Includes site permissions.
Root Sites / Site Collections
OneNote Notebooks				As of March 31, 2025, OneNote Notebook restores are no longer supported. See How to Export OneNote Notebooks.

Known Limitation

On March 31, 2025, Microsoft OneNote retired app-only authentication for Microsoft Graph APIs (Microsoft Message ID MC1011142). The change was made to enhance data security. Cloud-to-Cloud Backup uses app-only authentication and the specific change from Microsoft removed the ability to create OneNote Notebooks using app-only authentication. As a result of this change, Cloud-to-Cloud Backup will no longer be able to restore OneNote Notebooks to Microsoft 365. However, OneNote Notebooks are still able to be backed up and users can now export OneNote Notebooks from Cloud-to-Cloud Backup as an alternative recovery option. If a restoration attempt is made for a OneNote Notebook, it will fail, and a warning message will be generated in the job report.

Teams

Item Type	Item	Backed Up	Restored	Exported	Notes
Teams	Private teams Public teams Organization-wide teams Archived teams
Channels	Regular channels Private channels Shared channels Posts Tabs
Tabs	Files Websites Applications
Teams Mailbox	Emails Folders
Channel Files	Files
OneNote Notebooks	Files				As of March 31, 2025, OneNote Notebook restores are no longer supported. See How to Export OneNote Notebooks.

Known Limitation

On March 31, 2025, Microsoft OneNote retired app-only authentication for Microsoft Graph APIs (Microsoft Message ID MC1011142). The change was made to enhance data security. Cloud-to-Cloud Backup uses app-only authentication and the specific change from Microsoft removed the ability to create OneNote Notebooks using app-only authentication. As a result of this change, Cloud-to-Cloud Backup will no longer be able to restore OneNote Notebooks to Microsoft 365. However, OneNote Notebooks are still able to be backed up and users can now export OneNote Notebooks from Cloud-to-Cloud Backup as an alternative recovery option. If a restoration attempt is made for a OneNote Notebook, it will fail, and a warning message will be generated in the job report.