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    3. Office 365 Public folder Migration to Office 365 Guide

    Migrate Office 365 Public folder to Office 365

    Steps to migrate Office 365 Public folder to Office 365

User Manual

  • Office 365 Migration Overview
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    • Office 365 to Office 365
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    • Public Folder to Office 365
    • Archive Mailbox to Office 365
    • Public Folder to Exchange
    • Archive Mailbox to Exchange
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    • Office 365 to Office 365
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    • Office 365 to PST
  • How it works?
    • Office 365 to Office 365
    • Office 365 to Exchange
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    • Public Folder to Office 365
    • Public Folder to Exchange
    • Public Folder to Shared Mailbox
    • Archive Mailbox to Office 365
    • Archive Mailbox to Exchange
    • Office 365 to Hosted Exchange
  • Connect to Office 365
    • Modern Authentication Using OAuth 2.0
      • Microsoft 365 modern authentication
      • Automatic Registration
      • Manual Registration
    • Connect with Global Admin
    • Connect to Office 365 with full access permission
    • Connect to Office 365 with CSV file option
    • Connect to Office 365 as single user mailbox
  • Connect to Exchange server
  • Set Office 365 Impersonation rights
    • Using PowerShell commands
    • Using Office 365 GUI
  • Set Exchange Server Impersonation rights
  • Map the Mailboxes
  • Migration Walkthrough
    • Office 365 tenant to tenant migration
    • Office 365 to Exchange migration
    • Office 365 to PST Export
  • Multifactor Authentication
    • Enable MFA in Office 365
    • Create App password for MFA
    • Disable Security Defaults

EdbMails software for O365 Public migration

Migrating Public folders and their permissions between Office 365 tenants can be challenging without migration tools and proper guidance. EdbMails Office 365 migration software is one such application that reduces the Public folder migration time, workload and simplifies the transfer without requiring PowerShell scripts or manual procedures. You install EdbMails on your computer, connect to the source and target server and migrate your Public folder data with minimal user interaction. EdbMails has a user-friendly interface and enables you to select the folders you want to migrate along with features such as incremental migration, automatic mailbox mapping, include/exclude filters, migration log reports and so forth. The following sections describe the pre-migration requirements and steps to migrate Office 365 Public folder to Microsoft 365 with EdbMails.

Public folder to Office 365 migration

QUICK LINKS

Office 365 to Hosted Exchange Office 365 tenant to tenant migration Public Folder to Exchange migration Public Folder to Shared Mailbox Archive Mailbox to Office 365 Archive Mailbox to Exchange

I. Planning a Public folder migration to Microsoft 365

Before you migrate the Public folder from Office 365, you need to consider the migration requirements and prerequisites. Following is a checklist of items to identify and prepare your environments.

  1. Back up your existing Public folder mailboxes before you migrate
  2. Identify the type of your current migration environment (Hybrid or non-Hybrid)
  3. Identify the size and number of Public folders you want to migrate
  4. Determine whether you want to move everything at once or in stages
  5. Communicate the migration plan and changes to the end users
  6. Check your internet connection speed and network configuration.
  7. Decide if you plan to move Public folders to Public folders, Primary mailboxes or Shared mailboxes on the target server.
  8. Perform a test (pilot) migration before you start the actual one.

II. Pre migration activities for O365 Public folder migration

On the source tenant :

  1. Assign the Organization Management role group in Exchange online to the admin user on both the source and the target. It is an elevated permission that is required to migrate Public folders.
  2. Set the impersonation rights for the admin account in Office 365 to migrate mailboxes on behalf of other users in your organization.Verify if the source and target admin account in general has the following management roles assigned:

    1. ApplicationImpersonation
    2. View-Only Configuration
    3. View-Only Recipients
    4. Public Folders
    5. User management administrator/Global administrator

     See how to set impersonation rights on Office 365 by using PowerShell cmdlets and from the Office 365 admin center.

  3. Check if the Global admin account with the management roles has a valid and non-hidden mailbox on the source and target server.

On the target :

  1. Prepare your target Office 365 tenant. See tenant roadmap for Microsoft 365.
  2. Before you migrate to Office 365, ensure that you create mailboxes for your users in your organization and assign suitable licenses to them.

     Add users and assign licenses to Office 365 users

     Assign Microsoft 365 licenses to user accounts

  3. If you plan to migrate the source Public folders to Public folders on Office 365, ensure that you create and configure the Public folder mailboxes on the target server.

     Create Office 365 Public folder and assign mailbox user

  4. Ensure that you meet the network and bandwidth requirements for the migration. See network and migration planning, performance factors and best practices for Office 365 Public folder migration
  5. If you have a custom email domain from your hosting provider to which you want to migrate and receive emails, you must add and verify the domain on the target Office 365.

     Steps to add custom domain to Office 365

  6. Configure Office 365 to send and receive large messages

     Follow the steps to increase the message size on Office 365 to 150MB

    Note: For migrating Public folders to Office 365 with EdbMails, you do not require PowerShell scripts. The following steps describe the public migration method from the application’s graphical user interface (GUI).

III. Migrate Public folders from Office 365 to Office 365

There are two methods for migrating Public folder with EdbMails Office 365 migration tool.

  1. Direct migration of Office 365 Public folder to Office 365
  2. Migrate to Office 365 with the PST import method

Steps to migrate Public folder to Office 365 by using the direct method

  • Step 1: Download and install EdbMails Office 365 migration software
    • Download EdbMails and install the application on any computer that is connected to the source and target environment. You can also perform the migration operation by installing EdbMails on a non-Exchange server computer.

       See a detailed list of EdbMails system requirements for Office 365 migration.

      installation

    • Launch the application and click 'Login' or 'Start Your Free Trial'.

      Demo login EdbMails

    • Select the migration technique as Office 365 migration

      Select the option 'Office 365 Migration' (Tenant to Tenant migration & more...) from the drop down and click on Let’s Go!

      Office 365 Migration

    Note: If the Standard folders (such as Inbox, Calendar, Contacts) on your source server mailboxes are initialized with a different language, follow the details underneath to migrate these folders to the respective system folders on the target (destination) server.

    For Instance: If your source Inbox folder is named 'Boîte de réception', which is in French language and you migrate this folder directly to the destination server, then by default it will not be mapped to the 'Inbox' folder on the target server. In order to map the folder with the french name to the respective folder, change the regional settings on the target server to match that of your source mailbox folder language (in this case, it is French).

     Click here to know the steps to change the language and regional settings on Office 365

  • Step 2: Connect to the source Office 365 as Global Administrator

    In the Connect to Office 365 (Source) window, select the authentication method as Auto or Manual registration for modern authentication and the connection method as Public folder. Enter the global administrator credentials to authenticate.

     Connect to Office 365 server using secure modern authentication

    Automatic Registration

    Connection Methods

    After you authenticate and log in successfully, select one of the methods to load the mailboxes. You can also load and migrate the mailboxes using a CSV file. See the steps if you want to exclude a public folder from migration.

  • Step 3: Select the Public folder and connect to Office 365
    1. Select the public folders that you want to migrate.
    2. Click 'Migrate to Office 365' to set up the connection with the target server.

    Export Selected Mailboxes

    Tip: If this is the first time you’re migrating with EdbMails, the migration is a full migration. On subsequent migrations from the same source to the target, the migration is incremental.

    EdbMails provides the following additional options to help you customize the migration task.

    1. Additional Include and Exclude Filter Options
    2. Filter emails by Date: Migrate to Office 365 by applying the Date filter
    3. Filter emails by Size: Exclude emails or attachments larger than a specified size.
  • Step 4: Connect to the target server as Global Admin User

    EdbMails supports both modern and classic authentication. Connect to the target server by selecting Auto or Manual registration for modern authentication and the connection method as Public folder.

     Connect to Office 365 server using secure modern authentication

  • Step 5: Map the mailboxes between the source and the target

    The mapping activity in EdbMails can automatically match and map the mailboxes and folders between the two Office 365 tenants and saves time when you’re migrating a large number of public folders.

    mailbox mapping

  • Step 6 : Start the Public folder migration to Office 365

    Start and monitor the migration operation after you complete the mapping. Finally, verify the count of migrated emails, folders and mailbox items with EdbMails text-based log report.

Office 365 Public folder migration by using PST import

If you have an exported PST file of the Public folder, you can also use EdbMails to import the PST to Office 365. The following steps outline the migration operation.

  • Step 1: Select the migration method as Office 365 migration

    Download and run EdbMails if you haven’t installed it on your system. On the EdbMails migration selection popup, select the migration technique as Office 365 migration.

  • Step 2: Add PST files to migrate to Office 365

    To add the PST files, close the Connect to Office 365 (Source) connection window and click 'Migrate PST to Office 365' at the bottom. Add the required PST files and click 'Continue'.

    Add PST files to migrate to Office 365

  • Step 3: Connect to target Office 365 as Global Admin User

    EdbMails supports both modern and classic authentication. Connect to the target server by selecting Auto or Manual registration for modern authentication and the connection method as Public folder.

    Connection Methods

     Connect to Office 365 server using secure modern authentication

  • Step 4: Map and migrate Public folders to Office 365

    The mapping activity in EdbMails can automatically match and map the mailboxes and folders from the PST file to Office 365. This activity saves time when you’re migrating a large number of Public folders. After you complete the migration, verify the count of the migrated items and folders with the help of EdbMails log report. You can also log into your Office 365 tenant and verify the migrated folders and items.

    Migrate Source Exchange to Destination Exchange

IV. Office 365 migration troubleshooting

 See Office 365 migration troubleshooting guide and Public folder troubleshooting for possible solutions related to migration errors. For more information on EdbMails Office 365 migration, see frequently asked questions (FAQs)

Benefits of using EdbMails for Public folder migration

EdbMails Office 365 migration automates the migration of Public folders to the target tenant. Compared to the manual methods, EdbMails displays the complex public folder hierarchy in a tree type view. Its graphical user interface enables you to select and migrate folders, mailboxes and mail items easily without requiring PowerShell scripts.

  • EdbMails exactly replicates the folders and mailbox items from the source to the target
  • The application does not cause data loss or downtime during the Office 365 Public folder migration
  • Its incremental migration feature ensures no duplicate items during subsequent migrations to the same target
  • EdbMails provides automated features such as mailbox/folder mapping, setting impersonation rights, which reduces the administrator’s manual efforts
  • You can migrate Public folders of any size between the Office 365 tenants without requiring technical expertise.
  • EdbMails is highly secure and uses modern authentication with TLS encryption for Office 365 migration.
  • Free trial available to test the software’s working and facility for free 24x7 customer support.

 Related Links

  1. Video - Office 365 Public folder to Office 365 migration
  2. Office 365 Archive mailbox migration
  3. Office 365 tenant to tenant migration
  4. Office 365 to Exchange migration
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