Point-in-time restores are useful when you need to revert a mailbox to a state just before an undesired incident occurred in the mailbox.
You can restore messages to a specific date and time. To restore a mailbox or messages to a specific date and time while maintaining the folder structure, you must create a recovery point, and then restore the mailbox or messages from the recovery point.
Restore Messages to a Specific Date and Time
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From the navigation pane, go to Protect > Office 365.
The Office 365 Overview page appears.
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On the Apps tab, click the app.
The Overview page of the app appears.
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In the Recovery points tile, select a date from the calendar, and then under the calendar, click Restore.
Contents for all mailboxes in the Exchange Online app appear.
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From the list, select the mailbox that you want to restore.
You can use the Search bar to filter mailbox contents and find the items you want restore.
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At the top-left area of the page, click Restore.
The Restore options tool appears.
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On the Destination tab, select the restore destination, and then click Next:
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To restore to the original location, leave Restore the data to its original location selected.
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To restore to another location, from the Exchange account list, select Restore the data to another location, and then specify the location for the restore:
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To specify a different destination client for the restore, move the Restore to a different client toggle key to the right, and in the Destination client list, select an Exchange Online app.
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To restore to another mailbox, in the Mailbox box, click Browse, select a mailbox or All Public Folders from the list, and then click Submit.
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To restore to a specific folder location, in the Folder box, click Browse, select a folder from the list, and then click Submit.
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The Options tab appears.
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Beside If the message exists, specify which items to include in the restore, and then click Next:
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To not overwrite existing items, select Skip.
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To overwrite existing items, select Unconditionally overwrite.
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To launch the restore job using a specific access node, in the Access node list, select the access node to use.
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To include deleted items in the restore, select Include deleted items.
The Review tab appears.
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Review the items you selected for restore, and then click Submit to start the restore operation.
The Summary tab appears.
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Click Close.
Create a Recovery Point
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From the navigation pane, go to Protect > Office 365.
The Overview tab appears.
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Click the app that contains the mailbox that you want to restore.
The Overview tab appears.
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On the Monitoring tab, select the Recovery Points tab, and then click Create recovery point.
The Create recovery point dialog box appears.
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Under Mailbox, click the Browse button, select the mailboxes you want to create a recovery point for, and then click Add.
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In the calendar, select a date.
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Under the date, select a time.
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To use a different index server, under Update Index Server, select another index server from the list.
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Click Create.
Select the Recovery Point to Browse and Restore the Mailbox
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From the navigation pane, go to Protect > Office 365.
The Office 365 Overview page appears.
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On the Apps tab, click the app.
The Overview page of the app appears.
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In the Recovery points tile,
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On the Monitoring tab, select the Recovery Points tab, and in the row for the recovery point, click the action button
, and then click Restore > Restore messages or Restore > Restore mailbox.