Error

What if we receive this error, but the user’s mailbox is not full?


Criteria

This happens when the Recoverable Items folder is full.

The Recoverable Items folder (known in earlier versions of Exchange as the dumpster) exists to protect from accidental or malicious deletions and to facilitate discovery efforts commonly undertaken before or during litigation or investigations.

This can be only checked with PowerShell and Admins cannot check the status of the Recoverable Items folder in the Admin Center directly. But can be checked by In-Place eDiscovery or Content Search in the Microsoft Purview compliance portal.

PowerShell commands

If SingleItemRecoveryEnabled is set to True, it means that Single Item Recovery is enabled for the user's mailbox, allowing the recovery of individual items that have been deleted or modified within the retention period.

If SingleItemRecoveryEnabled is set to False, it means that Single Item Recovery is not enabled for the user's mailbox, and individual items may not be recoverable once they are deleted or modified beyond the retention period.

Note. Incorrectly cleaning up the Recoverable Items folder can result in data loss, it's important that you're familiar with the Recoverable Items folder and the impact of removing its contents. Before performing this procedure, review the information in the Recoverable Items folder.