How to Migrate Legacy Public Folders to Exchange Online (Microsoft 365)?

Everyone wants to be with advanced technology, and folder formatting is no exception. There are a lot of queries on the internet about legacy Public Folders; many users have been searching for reliable ways to migrate legacy Public Folders to Exchange Online (Microsoft 365). As many organizations are moving their email data handling from On-premises Exchange Server to the cloud, migrating legacy Public Folders has also become an important part of the migration process.

In this blog, we will explain how to migrate Legacy Public Folders to Exchange Online in a simple and easy-to-understand manner. We will cover both the manual migration method and the professional automated solution.

Table of Contents

A Quick Overview of Legacy Public Folders:

Legacy Public Folders are old-style shared folders used in older Exchange Server versions.
Organizations can use these folders to store emails, calendars, contacts, tasks, and other important data that needs to be accessed by different users or departments.
Legacy Public Folders are found in older Exchange Server versions like 2010, 2007 and earlier.

Why Do Users Migrate Legacy Public Folders to Exchange Online?

1. To Upgrade Server to Cloud

Organizations are moving their Exchange data from On-Premises Exchange servers to Microsoft 365 to use a cloud-based email environment. Exchange Online provides rid of upgrading Exchange On-Premises versions all the time. Users can easily upgrade themselves from older legacy Public Folders to Microsoft 365’s online Public Folders.

2. To Get All Essential Services Under One Roof
Exchange Online offers all the enterprise-grade services under one roof with a single subscription plan. Users get various services like Teams, SharePoint, OneDrive, Doc like applications/services at one place.

3. Better Security and Threat Protection

Along with cloud facilities, users also get world-class security from Microsoft. Office 365 provides security features that help protect data from threats like phishing and unauthorized access.

4. Cost-Efficiency

Migrating to Exchange Online is cost-efficient too. Exchange Online reduces the need for server maintenance and any kind of local deployment and man-power use.

Methods to Migrate Legacy Public Folders:

In this section, we will explain two ways to migrate from Legacy Public Folders to Exchange Online (Microsoft 365). The first method is a manual workaround, and the second method is a professional automated utility.

After understanding both methods, you can choose the option that best matches your requirements and technical knowledge.

Manual Method Using PowerShell: Use If You Are Technically Sound

Step1 – Download the required public folder migration scripts from Microsoft Exchange.
Step2 – Open PowerShell as Administrator.
Step3 – Run the migration scripts to collect information about the existing public folders and create the required migration files.
Step4 – Create a CSV file for mapping public folders and target mailboxes.
Step5 – Connect to Exchange Online using PowerShell.
Step6 – Create a migration batch using the mapping file and start the migration.
Step7 – Monitor the migration batch and check for any errors during the synchronization.
Step8 – After the initial sync is complete, migrate the migration batch and move the remaining data to Exchange Online.
Step9 – Finally, verify the migrated folders, emails, attachments, calendars, contacts, and permissions in Microsoft 365.

Drawbacks and Shortcomings of the Manual Method:

If you are technically sound, then only try to think about the manual migration. Some of the shortcomings of this method are:

It is only suitable if you have a migration task of only a few emails. For large data, this process is not appropriate.
You will need sufficient technical knowledge to perform the manual method, which includes PowerShell commands. The chances of human error are very high.
There is always a chance of missing data or incomplete transfers during syncing.
Sometimes, the original folder hierarchy is not maintained properly. It can lead to mismanagement in Exchange Online.

A Professional Solution with the Regain Software (Regain Exchange Server Migration Tool)

By using the Regain Exchange Server Migration Tool, you can easily migrate Legacy Public folders. This tool is developed specifically for the needs of professionals. This tool comes with a simple and friendly interface and is also useful for non-technical users. If you have data stored in the EDB file, then use the Regain EDB Converter Tool to export legacy Public Folders to Exchange Online.

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Step1: Firstly, launch the Regain Exchange Server Backup and Migration Tool.
Step2: Now, select Exchange Server as the Server type and enter the login credentials for your Exchange On-Premises Server.
Step3: Then, the software will provide a preview of all available Exchange Server folders. Select the Legacy Public Folders by checking the particular folder’s checkbox.
Step4: Now, from the Cloud Migration section, select and enter the destination account (Microsoft 365) credentials. Click Next.
Step5: Once the connection is established, click Next; the software will start the Legacy Public Folder migration.

Exclusive Features of Regain Exchange Server Migration Tool:

Migrate Exchange Server On-premises mailbox data to popular email platforms such as Microsoft 365, Gmail, Yahoo, AOL, Hotmail, and others (all IMAP-supporting email clients).
It is compatible with all versions of Exchange Server on-premises and Windows OS.
This utility preserves the original formatting of emails during the migration process.
Save public folder data in popular formats such as PST, EML, MSG, MBOX, and vCard. This makes it easy to access, share, or use the data with different email applications.
Back up important public folder data, including emails, contacts, calendars, tasks, notes, and attachments.
Users can easily select the mailboxes and public folders they want to export.
The utility also offers a free trial version, allowing users to try its features before purchasing. Moreover, free technical support is also available.

Concluding Words:

The process to migrate legacy Public Folders to Exchange Online can help organizations move their important shared data to Microsoft 365. The manual method is very technical and time-consuming, especially when dealing with a large amount of data, hence not recommended by professionals for professionals. A professional automated solution (Regain Exchange Server Migration Tool) can make the migration easier by reducing manual work and providing a simpler way to move public folder data. Users can also have a demo of this utility before proceeding with a license purchase.

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