a. Select the "Connect to Export / Backup / Migrate Public Folder" checkbox as shown in the below image. Enter the Live Exchange account credentials to connect to Source Exchange Server and click "Login to Exchange". Before connecting to Live Exchange server make sure to set the impersonation rights to a Exchange server user.
Click here to know how to set the impersonation rights.
b. After successful login, verify all the required Live Exchange mailboxes are listed and click "Continue".
If you are able to view all the Exchange server user accounts, click the “Continue” button
or
In List of Mailboxes, if you are missing the Mailbox names, then execute the powershell commands to generate the CSV file.
Command:
Get-Mailbox -ResultSize Unlimited | Select-Object PrimarySmtpAddress, DisplayName | export-csv "C:\Mailbox_Names.csv"
Result
Verify the generated CSV file, check for the missing mailboxes.
Click the “Load Mailboxes From CSV File” button
Select the generated CSV file
Click the "Continue" button
c. Select the export location by browsing to desired location and click "OK".
d. Select the Public folder associated mailbox. Afterwards, select “Export Live Exchange to PST [Incremental]” button
For Instance : If you have associated administrator@exch.com mailbox to your Public Folder then select administrator@exch.com to Migrate / Export your Public Folder.
e. Include or exclude mails by date, subject, attachment, to/from address, if necessary, using the filtering options and click “Export / Archive Exchange to PST”
f. During the export operation, detailed progress will be displayed as shown in the screenshot below
h. Once the Export operation is completed, the message "Export operation has been completed" will be prompted.