- You Have Exceeded The Size Limit On Your Mailbox Outlook 365
- Exceeded The Size Limit On Your Mailbox Mail
Learn about email storage limits in Xfinity Connect. Open Mailbox Cleanup window. In Outlook 2007: Click on Tools from the Menu Bar. Apr 27, 2021 You have exceeded the default size of the PST allowed in Outlook 2003 or 2007. You are running on a FAT32 partition, instead of NTFS; For these last three items, the troubleshooting steps are similar. First, check the size of your PST / OST file. If your operating system is Windows Vista or Windows 7, browse to: C:Users AppDataLocalMicrosoftOutlook.
-->Increase the mailbox quota for first logon, and revert it if necessary. For identifying the current size and quota size of the problematic mailbox, use the following Windows PowerShell cmdlet: Get-MailboxStatistics -Identity FL displayname,totalitemsize For increasing the mailbox quota temporarily, use the following cmdlet.
Original KB number: 2958940
Summary
A user can't sign in to Outlook on the Web in Exchange Server 2016 or Exchange Server 2013 when the mailbox size exceeds its quota. During the logon attempt, the user receives the following message on the logon page:
Something went wrong
You've exceeded the storage limit for your mailbox. Delete some items from your mailbox.'
more detail...
refresh the page
When the user selects the more detail link, the user receives the following information:
X-OWA-Error: Microsoft.Exchange.Data.Storage.QuotaExceededException
X-OWA-Version: 15.0.775.32
X-FEServer: E15
X-BEServer: E15
Date: DateTime
After the user selects the refresh the page link, they can sign in to Outlook Web App successfully.
This article is intended for use by support agents and IT professionals. If you're looking for more information about Outlook.com errors, see Frequently Asked Questions for Outlook.com.
Cause
This behavior is by design in Exchange Server 2016 and Exchange Server 2013.
This behavior may occur when the user mailbox is not configured completely at the first logon. During first logons, Exchange Server configures attributes in the database and in Active Directory for the specified mailboxes. The behavior is correct in the following scenarios:

- The mailbox moved from a legacy server and it is over the mailbox quota.
- The mailbox is a newly created mailbox and it is over the mailbox quota.
Workaround - Method 1
Select the refresh the page link on the logon page.
Workaround - Method 2
Increase the mailbox quota for first logon, and revert it if necessary.
For identifying the current size and quota size of the problematic mailbox, use the following Windows PowerShell cmdlet:
For increasing the mailbox quota temporarily, use the following cmdlet. We use 2.1 gigabytes (GB) as a sample value. This value should be larger than TotalItemSize
.
If you are using the default quota from the database object, you have to disable the default quota for the specified mailbox. To do this, use the following cmdlet:
With the Set-Mailbox
cmdlet mentioned previously, we have configured the mailbox with additional space to establish first logons. After first logon, you can revert the settings. Setting up a default quota will be enough. You can use the following cmdlet to configure the default quota for specified mailbox:
One of the important tasks of an Exchange administrator is controlling mailbox sizes. It is very difficult to force users to voluntarily limit the size of their mailbox, so you have to use mail server quotas. Typically, mailbox quotas in Exchange Server are defined at the database level and apply to all mailboxes that are stored in this database. This is very convenient, since you know for sure that in a particular database all the boxes have the same data retention policy.
You can view the quota settings for the lonDB1 database with the command:
As you can see, the mailbox has three levels of size restrictions:
- IssueWarningQuota—if the mailbox size is equal to or greater than the specified value, a warning is sent to the user of this mailbox;
- ProhibitSendQuota—if the mailbox size reaches the specified value or exceeds it, the mailbox user on the Exchange server won’t be allowed to send new emails, and an error message will be displayed;
- ProhibitSendReceiveQuota—if this value is exceeded, the user won’t be allowed to send new emails, and no more messages will be delivered to this mailbox. Messages sent to this mailbox will be returned to the sender with an appropriate error message (NDR).
By default, quotas for a new mailbox database are not set. To change database quotas, you can run the following command:
You can also configure mailbox quotas from the Exchange admin center (EAC) web interface. To do this, go to the section Servers > Databases > select the required database > Properties > set the necessary quotas on the Limits tab.
Database restrictions apply to all mailboxes that are in this database. But the standard quota values are not suitable for everyone, so the Exchange administrator periodically has to change the quota settings for the individual users. To change quota setting for the user jsmith use the following command:
To display the current quota settings for the mailbox, run:
Mailbox quota settings can also be changed from EAC (Recipients > Mailboxes > Properties > Mailbox usage > Customize the quota settings for this mailbox).
Please note that in Exchange itself there are no technical restrictions on the size of the box. For Outlook, the size of the mailbox is limited to the maximum size of the data file and is 50GB by default, but you can change this value if necessary (see the
In order not to get confused in quotas on the mailboxes specified manually, it is recommended to use several databases with different quotas and, if necessary, to increase the user mailbox, simply
Changing the quota per mailbox in Exchange 2016 is not immediately applied. You need to wait 2-3 hours or execute the Update-StoreMailboxState [UserName] command.
Also note that mailbox quotas are treated differently in Exchange Server 2013/2016 and Exchange Server 2010. In 2016, the quota includes all service information and deleted items, and in 2010 only the user information.
Periodically, it is necessary to perform an analysis of mailbox sizes: either simply to control the use of resources, or to revise the quota policy, or when preparing for the migration to a new system.
To analyze the current mailbox sizes in Exchange Server 2016, you can use the following PowerShell script:
The resulting CSV file can be easily imported into Excel and analyzed.
AuthorRecent PostsCyril Kardashevsky