

For instance, if Outlook hasn't been updated in a while or you are running a corrupt version of the app, then it can cause this error.
#Check outlook storage size full
The good news is that you can easily fix Outlook mailbox is full and can't send messages error by getting rid of these faulty plugins.Īpart from user-related issues or human errors, the problem can also arrive due to a faulty application. Just because your account's junk is not there in the main Inbox, it doesn't mean that it isn't exhausting your Outlook space.ĭo you have some third-party add-ons or plugins installed on your Outlook account? Well, this could be another reason for causing some logical issues with your Outlook account. This could happen due to excessive junk or temporary data on your Outlook account. Setting up a default quota will be enough.Your Outlook Inbox might be clear, but chances are that you could still be getting the low storage error. After first logon, you can revert the settings. With the Set-Mailbox cmdlet mentioned previously, we have configured the mailbox with additional space to establish first logons. To do this, use the following cmdlet: Set-Mailbox -Identity -ProhibitSendReceiveQuota 2.1GB -ProhibitSendQuota 2.1GB -IssueWarningQuota 2.1GB -UseDatabaseQuotaDefaults $false If you are using the default quota from the database object, you have to disable the default quota for the specified mailbox. Set-Mailbox -Identity -ProhibitSendReceiveQuota 2.1GB -ProhibitSendQuota 2.1GB -IssueWarningQuota 2.1GB

This value should be larger than TotalItemSize. We use 2.1 gigabytes (GB) as a sample value.
#Check outlook storage size windows
Increase the mailbox quota for first logon, and revert it if necessary.įor identifying the current size and quota size of the problematic mailbox, use the following Windows PowerShell cmdlet: Get-MailboxStatistics -Identity |FL displayname,totalitemsizeįor increasing the mailbox quota temporarily, use the following cmdlet. Select the refresh the page link on the logon page.

During the logon attempt, the user receives the following message on the logon page: 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.
