Auto-Expanding Online Archive Office 365

17 בAugust 2017

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This week I had to check the “Auto-Expanding” archiving feature in office 365, It turns out that it is a good one, this features provides additional storage space for our archive mailboxes – how are you asking?

Usually, user get 100 GB of storage for archive, when a mailbox capacity is reached, auto-expanding will add automatically additional storage, Office 365 automatically adds storage space to the archive when necessary, another important point it’s that auto-expanding add additional space for shared mailboxes as well.

Basically, folders moved as a new subfolder as on your archive folder, the funny thing is that Microsoft Office 365 decides which folder get moved when auto-expanding added.


The picture was taken from Microsoft web site.


Before auto-expanding added:

The picture was taken from Microsoft web site.

How does it look like after additional storage is added

The picture was taken from Microsoft web site.


In order to enable this feature for a user, you have to be a member of “Global Administrator” or “Organization Management”.

Once you turned on auto-expanding archiving for your mailbox it can take up to 60 days for getting the additional storage. BTY almost forget to state, you cannot turn off auto-expanding as soon as you turn on it.

Before you turn on the “Auto-Expanding ” ensure you have enabled the archiving option to the user.

Get-Mailbox -Filter {ArchiveStatus -Eq "None" -AND RecipientTypeDetails -eq "UserMailbox"} | Enable-Mailbox -Archive

How to enable Auto-Expanding for your organization?

Run the following command on PowerShell:

Set-OrganizationConfig -AutoExpandingArchive

If you would like to enable this feature per a mailbox you can use the following command:

Enable-Mailbox <user mailbox> -AutoExpandingArchive

Maybe you already enabled it? check it out:

Get-OrganizationConfig | FL AutoExpandingArchiveEnabled

Or per a mailbox:

Get-Mailbox <user mailbox> | FL AutoExpandingArchiveEnabled

Outlook requirement for accessing items in an auto-expanded archive:

Microsoft says that only “Outlook 2016 for Windows, Mac, and OWA” are possible for accessing in auto-expanded archive.

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