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How to Backup Exchange Online Mailboxes to PST – Ingenious Ways

Bella Blackwell | Modified: 2021-06-05T11:15:10+00:00
office 365 exchange online mailbox backup

Exchange Online is the most preferable cloud-based emailing service across the globe. However, with rapidly rising online hacking, users do not feel very much secure. That’s why, they need to backup Exchange Online Mailboxes to PST to maintain a local copy of their important users data saved on the cloud, i.e., Exchange Online account. It also helps in data loss disaster too. Therefore, this article describes a roadmap to export the data on the local platform. Here, we’ll focus on the core queries related to the Office 365 Exchange Online backup.

1. How to backup entire mailbox from Exchange Online?

2. How to export Exchange Online mailbox to PC Via. eDiscovery?

3. How do I backup Exchange Online mailbox Using PowerShell?

So, let’s begin!

Full Guide to Backup Exchange Online Mailboxes to PST

Method #1: Export O365 Exchange Mailbox to PC Via. Ideal Solution

>As a quick and safe approach, users can opt for Office 365 Backup and Restore utility to export and backup Office 365 mailboxes automatically. Designed specifically for Office 365 Enterprise E1 / E3 / E5, Exchange Online Plan 1 & Plan 2, Office 365 Business Premium, Office 365 A1/ A3/ A5, Office 365 F1, Office 365 Business Essentials. This tool offers every functionality that you need to export the mailbox to PST file format. Along with backup process, it offers restore feature too. So, if you want to recover the backup file of Exchange Online that saved in PST format, then it can be easily done using the software.

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Steps to Backup Exchange Online Mailboxes to PST

Step 1 – Download install, and run the tool on your computer and choose Office 365 and Outlook as the source and the destination platforms.

Step 2 – Mark all the required mailbox items like email, contact, calendar, and documents for backup from workload selection.

Step 3 – Use admin credentials such as admin ID and application ID and log in to the portal and validate permissions by clicking the validate button.

Step 4 – Locate the path and destination for saving the resultant backup PST file on your local computer.

Step 5 – Select the desired Office 365 user account from the list and hit the start backup button..

Method #2: Export Exchange Online mailbox to PST using PowerShell

Here, we are going to discuss manual approach by which users can backup Exchange Online mailboxes to PST format. Go through the below instructions for the same.

Step 1: Establish connection with Exchange Server via PowerShell

  • First of all, run the following command:
command 1

Now, in Windows PowerShell Credential Request box, you should enter Exchange Online admin account credentials. Thus, you need to enter the username and password of amit@cloudsystool.onmicrosoft.com in the given window.

  • After that, you have to run the command displayed below:
PowerShell cmdlet
  • Then, execute the command given below
mailbox import export role in exchange online

Step 2: Provide Full Access Right to Mailbox using PowerShell

At this scenario, ajay@cloudsystool.onmicrosoft.com will get complete access to edwin@123.onmicrosoft.com mailbox. For the same, you need to run following command:

export mailbox to pst Online using powershell

Step 3: Start Outlook with A Newly Created Account

After this, now you will open MS Outlook using new account, i.e., edwin@123.onmicrosoft.com. Well, make sure that ajay@cloudsystool.onmicrosoft.com mailbox is available in left pane of MS Outlook mailbox. Keep in mind that all permissions will take a few seconds in order to be applicable.

Step 4: Check the Configuration Settings of MS Outlook

In the step 4 of performing the task to backup Exchange Online mailboxes to PST, be sure that Outlook application is set to get configured and download all emails, follow these steps:

  • Go to File option, click Info and then, Account Settings option
  • After that, select Account Settings and choose the specific account
  • Click Change button and check whether this option ‘Use Cached Exchange Mode’ is selected or not.

Step 5: Use Import and Export Wizard to Completely Backup Exchange Online Mailboxes to PST

  • In order to export ajay@cloudsystool.onmicrosoft.com mailbox to PST format, select File and then Open & Export option. Choose Import/ Export option
  • Next, choose Export to a file from given list option and press Next
  • Now, select Outlook Data file (PST) option and click Next button

Afterwards choose the desired mailbox, i.e., ajay@cloudsystool.onmicrosoft.com from the folder list.

  • Click Next button and then, check to Include Subfolders option
  • Provide a new name to a particular file and storage path where you can save PST file i.e., c:\tmp\outlook-archive- ajay@cloudsystool -20160209.pst
  • Select the desired option from the Options section and click the Finish button to complete export process
  • If needed, then you need to enter password for Outlook file. Else, leave it blank if it is not against policy and press OK button to complete the task to backup Exchange Online mailboxes to PST.

Note: Outlook will not work till the migration procedure is going on.

Step 6: Check Export PST from Exchange Online 365 via PowerShell

Make sure the migration process is done properly; you have to check mailbox size on Server and compare it with size of resultant PST file. For this, follow the steps given below:

  • Right-click on the desired mailbox and choose Data file properties option
  • Then, go to General tab and select the Folder Size
  • Next, move to Server Data tab and mark down the Total Size
  • Navigate to properties of Output PST file and verify if size of exported PST matches with given value of Outlook or not.

Step 7: Remove Assigned Permissions in Above Steps

Here, delete all permissions already assigned to above steps using PowerShell. To do the this, run the following commands:

Remove Assigned Permissions

Step 8: Terminate PowerShell Session

Once you have converted Exchange Online mailboxes to PST file successfully, you can exit the PowerShell session. For the same, run the command given below:

Terminate PowerShell Session

After executing PowerShell command to export o365 mailbox to PST, users will get PST file that contains emails, calendar, contacts and attachments.

Method #3: Exchange Online Export Mailbox to PST – eDiscovery PST Export Tool

It is the second manual workaround to backup Exchange Online mailbox to PST, is via eDiscovery PST export tool. Here are following steps as listed below:

Backup Exchange Online mailboxes to PST

1.Log in to Microsoft Office 365 service and go to Exchange Online Admin center to perform data conversion.

2. Expand the Admin Center and select an option Security & Compliance

export office 365 mailbox to pst from portal

3. Click on Permission, choose + icon in Security & Compliance center. Now, you need to edit role group of eDiscovery Manager

choose + icon in Security & Compliance

4. Next, click on + icon in order to add account in eDiscovery Administrator list. Now, click Save button and then continue.

5. Then, go to Search & Investigation center and click on + icon. Select new Content Search Wizard. Fill name inside the Name field, click Next and proceed further.

6. If you wish to bulk (all data) export mailbox data from Exchange Online, then simply choose Search everywhere and Exchange option.

export exchange online archive to pst

To migrate only selective data, choose Custom location selection and click + icon.

If you need to transfer data from Public folders, select Search all public folders option.

7. In case of selective migration from Exchange Online mailbox, use different filtering options including logical operators, i.e., AND, OR, NOT, etc., with any keyword or phrases. Now, click Search option in order to start the search process

8. Once the search process is done successfully, click Start Export button

9. But, if you want, then you can also add encrypted files. When everything is prepared, go to Start export button

10. The export process is started. Here, it depends on your choice that either choose Finish or Download exported results button. If you select Download exported results option, afterward downloading process and export tools is finished at the same time

11: Now, the export key is generated you need to copy before going forward

Download exported results to backup exchange Online Mailbox to PST

12: Finally, eDiscovery PST export tool will start the entire process. Now, paste the export key that you have copied in above step. Choose the desired location to save the exported Office 365 mailbox data in PST format.

Final Words

Data migration from cloud-based service is not as easy as it looks. Same case with Exchange Online or Office 365 mailbox data. Many times users are finding how to backup Exchange Online mailbox to PST using PowerShell. After understanding the user’s demand, all manual tricks to perform data backup are mentioned here. Else, users can go for an instant solution named as Office 365 Backup tool that make it easy to save Office 365 mailboxes to PST file. So, users can choose between them wisely and perform the task accordingly.