Office 365: Move mailboxes between tenants

Hi

I am in the situation where I have 2 Office 365 tenants (one company bought another one).

How can I migrate all mailboxes & domain name from one tenant to the main one?
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Éric MoreauSenior .Net ConsultantAsked:
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Todd NelsonConnect With a Mentor Systems EngineerCommented:
You can create PST files from the portal.  According to recent call I had with O365 support, this is the only supported method to export a mailbox to PST.  I don't really understand why, but that's what they said.

  • Exchange Online Admin Center
  • Compliance Management
  • In-Place e-Discovery & Hold
  • Create a new e-discovery for all items in a specific mailbox.
  • "Export to a PST file"

Screen-Shot-2016-11-02-at-5.46.33-PM.png
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PowerEdgeTechConnect With a Mentor IT ConsultantCommented:
Use the onmicrosoft.com addresses ... from domain.tld to newaccountname.onmicrosoft.com. Once the mailboxes are migrated, remove the domain from the first tenant, then add it to the second. Then you can do one last pass of migrating email from originalaccountname.onmicrosoft.com to domain.tld.\

Something like MigrationWiz makes this very easy.
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Éric MoreauSenior .Net ConsultantAuthor Commented:
Where can I find the migration wizard in the O365 portal?
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Todd NelsonSystems EngineerCommented:
IMO, there are essentially two viable options ... hybrid migration or use of a third party tool.

PowerEdgeTech is referring to a third party tool called MigrationWiz by BitTitan ... https://www.bittitan.com/products/migrationwiz/overview
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Éric MoreauSenior .Net ConsultantAuthor Commented:
Sorry for the noob question but what is "hybrid migration"?
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Todd NelsonSystems EngineerCommented:
A hybrid migration is essentially migrating mailboxes between an on premises Exchange server and Exchange Online (O365).

In your case, the third party tool option would probably be best.
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Éric MoreauSenior .Net ConsultantAuthor Commented:
as stated in my question, I am moving from O365 to O365.

any other options?
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PowerEdgeTechIT ConsultantCommented:
MigrationWiz is $13/user, but simplifies the process, and can easily do an O365-to-O365 migration (as well as on-premise, Gmail, etc.).

You could also export/import PST's, but you'll soon realize that $13/user is a no-brainer.

I just did a migration between tenants and posted the steps I took. Fairly simple process.
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CodeTwo SoftwareConnect With a Mentor Software DeveloperCommented:
Hi Eric,

CodeTwo Backup for Office 365 can help you streamline the move.

http://www.codetwo.com/backup-for-office-365?sts=6432

Migrations between Office 365 tenants are not its primary capability, but it can help with them thanks to the custom recovery destination capability: http://www.codetwo.com/userguide/backup/restore-backups.htm?sts=6432#target-location

The pricing starts with $10/user: http://www.codetwo.com/backup-for-office-365/pricing?sts=6432

Give us a shout if you have any questions about the solution.

- CodeTwo
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Éric MoreauSenior .Net ConsultantAuthor Commented:
I have already created the users on the new domain (abc.com). Now what I need to do is to migrate their old mailbox/calendar/contacts (xyz.com) into the final tenant (abc.com) into the correct mailbox (MrX@xyz.com is merged into MrX@abc.com). Can that be done? When in the process do I need to change the MX records?Add the aliases to their abc.com?

I am a newbie in that and they don't want to loose mails in the process!
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PowerEdgeTechIT ConsultantCommented:
Yes, that is possible. Depends on HOW you are going to do it, but for example, if you use MigrationWiz, you put mrx@xyz.com as the Source and mrx@abc.com as the destination (IF you have a secondary domain you are using for the transition).

Give yourself Full Access rights to all the mailboxes on both tenants, and use your rights to migrate, instead of needing each user's password.

If you are using a secondary domain for the transition, you can do the MX records for abc.com any time. You do not have to change the MX records when going from O365 to O365 - the only DNS addition you'll need is the TXT record to verify abc.com when you add it to the final tenant and for xyz.com when you are ready to move it to the final tenant. After a full pass of email migration, then remove xyz.com from the first tenant and add it to the final tenant and add it as an alias domain or switch it to the primary domain. Once that is done, then you can do another final migration from originalaccountforxyz.onmicrosoft.com to xyz.com (for example, mrx@originalxyz.onmicrosoft.com to mrx@xyz.com).
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Frank JacquesCommented:
#1 question... how many users ?
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Éric MoreauSenior .Net ConsultantAuthor Commented:
5-10 but they are remote (China and I am in Canada)
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Frank JacquesCommented:
then you just export to PST then import into new ones... will take less time then dealing with all of this
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Éric MoreauSenior .Net ConsultantAuthor Commented:
They are not power user and they are far away. They won't be able to do it by themselves.

Is it possible to create PST files from the O365 admin console?
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PowerEdgeTechIT ConsultantCommented:
Location doesn't matter. As I said earlier, you can do PST, you still have to deal with "all this". The "how" you migrate the data is interchangeable in this process.
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PowerEdgeTechIT ConsultantCommented:
No, you can't create a PST from the portal - you'd have to use Outlook to download their email then upload it into the new account. This is NOT easier. That's why YOU do it, so the users don't have to.
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Éric MoreauSenior .Net ConsultantAuthor Commented:
interesting. I will need to check if that option is available for me
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PowerEdgeTechIT ConsultantCommented:
Most people won't have that option:
In-Place Hold is a premium feature that requires an Exchange Online Plan 2 or Exchange Online Archiving license to enable it for each user mailbox.
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Deeksha NegiServer AdministratorCommented:
Hi Eric,

To migrate from Office 365 tenant to another O365 tenant, you can try the tool named SysTools Office 365 to Office 365 Migrator that allows you to migrate O365 mailbox to another O365 mailbox efficiently. This tool provides numerous features, some of which are as stated below:

1. Keeps the data secure, maintains folder hierarchy and keeps meta properties intact.
2. Provides various filters like time to perform selective migration
3. Creates a summary report after the transfer process is complete.
4. Excludes duplicate emails while transferring from tenant to tenant.

To know various other features of this software, follow the link below:
https://www.systoolsgroup.com/office365-express-migrator.html
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CodeTwo SoftwareSoftware DeveloperCommented:
interesting. I will need to check if that option is available for me

You can use our step-by-step guide with illustrations:

http://www.codetwo.com/admins-blog/how-to-export-office-365-mailboxes-to-pst-using-ediscovery/?sts=6432
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Éric MoreauSenior .Net ConsultantAuthor Commented:
I followed the steps but the ClickOnce app of step 10 is not launching. I get this error instead:
exporttopst.PNG
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PowerEdgeTechIT ConsultantCommented:
You probably don't have a subscription that supports that feature.
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CodeTwo SoftwareSoftware DeveloperCommented:
Eric - what browser are you using?
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Éric MoreauSenior .Net ConsultantAuthor Commented:
Which subscriptions level is required?

Mainly Chrome. The office portal often throws critical errors when I use IE.
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CodeTwo SoftwareSoftware DeveloperCommented:
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Éric MoreauSenior .Net ConsultantAuthor Commented:
this morning, I don't even see the export option!
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PowerEdgeTechIT ConsultantCommented:
Exchange Online 2 or higher.
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Éric MoreauSenior .Net ConsultantAuthor Commented:
The tenant in which I am trying it has "Office 365 Business Premium"? From what I understand, it is considered higher. Is it?

The tenant from which I will have to move the mailbox is Exchange Online Plan 1 so it will not work for sure.

I'll review my options then.
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PowerEdgeTechIT ConsultantCommented:
No, Business Premium is roughly equivalent to Exchange Online Plan 1.
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Éric MoreauSenior .Net ConsultantAuthor Commented:
not a full solution but something I can probably start with!
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