Migrate Offline Exchange 2010 Mailbox to Office 365 – Step by Step Guide

Samuel Adams | June 2nd, 2020 | Tips

Are you ready to migrate Offline Exchange Database file to Office 365 for your organization? This guide will help to go through the process, no matter user is technical or non-technical. But while working with live environment multiple methods that can be deployed. Some techniques are given below:

  • Import PST to Office 365
  • Exchange 2010 to Office 365 Cutover migration
  • Exchange 2010 to Office 365 Staged Migration
  • Exchange Recovery Tool – Alternative Solution

Need for Migration of Offline Exchange to Office 365?

A lot of reasons prompt towards companies that make them migrate Offline Exchange Datebase to Exchange Online. The primary one is what if any disaster occur? All, your data can come to risk. Moreover, Hardware maintenance cost, 100% server availability, are also a few reasons to migrate. Let’s see in brief about Office 365 advantage over Exchange:

Office 365 offers easy access to your data without spending on the infrastructure. All you need to subscribe plan as per your companies need and create users.

  • Forget about Disk Storage or Investment on storage media to save your company data.
  • Secured against data loss due to disasters, technical faults, etc. at Microsoft Data Centers.
  • Forget about the Corruption and Stability issues that user faced in Offline Exchange
  • Now no more Exchange Server Downtime issue or other page load issues

Above cons of Office 365 that forced companies to migrate Exchange databases to Office 365 successfully. But it needs a lot of in-depth expertise and patience for migrating to Office 365 from Exchange Server.

Methods to Migrate Mailboxes from Offline Exchange Database to Office 365

a) Migrate PST to Office 365 Mailboxes: Since Exchange mailbox can be exported into PST File format and in Office 365 Account we can use Azure AzCopy Tool import this PST File. As this process divided into three different sections such as:

  • Section 1: Install Azure AzCopy & Copy SAS URL
  • Section 2: Create the PST Import Mapping File
  • Section 3: Create PST Import Job in Office 365 Application

For Complete Steps, Please Visit: Import PST File to Office 365 Account

Method 2: Exchange 2010 to Office 365 – Cutover migration

This Migration Feature helps Exchange Administrator to Move mailboxes to O365 easily. But methods hold some limitation such as:

a) Method used to Migrate Mailboxes less than 2000.
b) Useful for Small and Medium Organization

Now follow step by step for Exchange 2010 to Office 365 Hybrid Migration

1. Create a Group to Receive:

The on-premise Exchange server consists of a mail-enabled security group. So create a mail-enabled security group within Office 365 before migrating. For this login to the O365 account, Next GOTO Office 365 Admin Centre > Group > Create new and create a group to receive mailbox items.

2. Create Cutover Migration Endpoint:

  • For this GOTO Exchange Admin Center >> Recipients >> Migration. Here, click on ‘+’ then Select Migrate to Exchange Online option. Now select radio button beside Cutover migration (supported by Exchange Server 2003 and later versions). Now fill other option for endpoint migration (new batch migration).
  • At the end Type the name of migration and click on Start button.
  • Next, Browse the user that will get the migration report and select radio button beside Automatically start the batch. Next click on new to start migration. To view details click on migration tab and click on View Details.
  •  Now Assign Office 365 license to new users. The user account is automatically created after Cutover Migration.
  • Next Re-route domain to receive new emails in Office365.

Method 3: Exchange 2010 to Office 365 Staged Migration

This method can only be used for Exchange version 2003 & 2007. And as Cutover migration, Staged migration also helps to migrate only 2000 mailboxes. If companies want to migrate more then 2000 mailboxes then this will not be helpful.
Limitations of Mentioned Techniques

  • Time taking and takes large server downtime.
  • In-depth technical knowledge required to perform the migration.

Alternative Solution to Migrate Exchange 2010 to office 365 Step by Step Guide

Step by Step Guide to Migrate Dismounted Exchange 2010 to Office 365

Download Now

  • Software supports Migration of Offline Exchange 2019 and Below version Mailboxes to Office 365 account.

Add File

  • As we discussed any Corruption Issue Dismounted EDB File can be fixing using Advance Scanning Option of the utility.

Repair EDB File

  • Preview complete mailboxes details stored within Offline EDB file.

Preview Mailbox

  • Now Select Office 365 account to start process of migrate Exchange 2010 Mailbox to Office 365 account.

Export Option

  • After validating Office 365 user account. The software gives two option one is to Enter the Destination Mailbox or Add CSV to migrate Offline Exchange database file to the particular Office 365 user account.

Office 365 Options

  • Provide User Mailbox Credentials so that Software validate the credentials to start Export Process.


  • After Migration of Exchange Offline Mailboxes to Office 365 process, view the exported mailbox in O365 account.

Open Exchange Mailbox


Now Organization using Office365 application to avoid infrastructure and other resources such as Space, Operating System environment and networking resources used in Exchange Server environment. But moving mailboxes of users created in Exchange Server environment to Office 365 account remains a difficult task if we did not follow the right procedure offered by Microsoft such as “Cut Over Migration and Shared Migration”.

Exchange Administrator can try another alternative solution offered by SysTools to migrate Exchange 2010 mailbox to Office 365 step by step using the above guide. As Software not only export but also repair and fix any corruption in a .edb file of various Exchange environment.