Mailbox and In-Place Archive Full

Question

one of our users which mailbox and in-place archive is full. User have Exchange Plan 2 license assigned.
Mailbox is full and we cannot do online archiving as it says that in-Place Archive is full as well. Account have Exchange Plan 2 license, which should have no limit in the storage.
mailbox size- 99.36 GB
Mailbox is created on O365 Cloud

Answer 1

Hi @Sree

According to your information above, you have enabled uto-expanding archiving for this mailbox.

Each user initially receives 100 GB of storage in the archive mailbox. When auto-expanding archiving is turned on, additional storage is automatically added when the 100 GB storage capacity is reached. Additional storage space is added incrementally until the archive storage capacity reaches 1.5 TB.

However we still need to note that, Auto-expanding archiving is supported only for mailboxes used for individual users (or shared mailboxes) with a growth rate that doesn't exceed 1 GB per day. Please make sure you do not exceed this limit.
Details can be referred here And this: Microsoft Caps Exchange Online’s “Unlimited Archive” at 1.5 TB

Enable auto-expanding archiving - Admin Help
Similarly, the values for the ArchiveQuota and ArchiveWarningQuota mailbox properties aren't changed when you enable auto-expanding archiving. In fact, when you enable auto-expanding archiving for a user mailbox and the AutoExpandingArchiveEnabled property is set to True, the ArchiveQuota and ArchiveWarningQuota properties are ignored.

You could double confirm if auto-expanding archiving is enabled for your organization and this specific user

Get-OrganizationConfig | FL AutoExpandingArchiveEnabled  
Get-Mailbox "user mailbox" | FL AutoExpandingArchiveEnabled  

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Answer 2

Found similar thread - https://community.spiceworks.com/topic/2158100-in-place-archive

You can look for a solution from here.

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