If no archive is enabled, check whether the user is on hold by running the following cmdlet: Get-Mailbox | fl *HoldEnabled If the ArchiveStatus value is Archive, and if the ArchiveState value is Local, an archive is enabled in the cloud service. Verify that an archive is enabled for the affected user's mailbox by running the following cmdlet: Get-Mailbox | fl ArchiveStat* For Symptoms 1 and 3, you can either ask the affected user to delete items from the mailbox, or you can follow the next steps.If the TotalItemSize value exceeds the ProhibitSendReceiveQuota value, or if the TotalDeletedItemSize value exceeds the RecoverableItemsQuota value: The TotalDeletedItemSize value refers to the size of the Recoverable Items folder that isn't visible to the user. The TotalItemSize value refers to the portion of the mailbox that's visible to the user.The user will encounter the issue that's mentioned in the "Symptoms" section. If the StorageLimitStatus value isn't blank, this means that the mailbox size exceeds the quota.Then, verify the status of the mailbox quota by running this cmdlet: Get-MailboxStatistics | fl StorageLimitStatus,TotalItemSize,TotalDeletedItemSize Verify the storage quotas of the user's mailbox by running the following cmdlet: Get-Mailbox | fl ProhibitSendReceiveQuota,RecoverableItemsQuota The mailbox size that the user sees isn't the actual size because it doesn't include the Recoverable Items folder. This issue occurs if the mailbox size exceeds the mailbox quota. The user can't change or accept a calendar invitation. When the user deletes email messages, the following warning message is displayed: The user receives a "mailbox is full" warning message for a mailbox that hasn't reached the storage limit. SymptomsĪ user experiences one of the following symptoms. For more information about Microsoft Purview, see the blog announcement. Microsoft 365 compliance is now called Microsoft Purview and the solutions within the compliance area have been rebranded.