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Mailbox Quota Exceeded: What It Means & How to Fix It?

To avoid this error, set a limit for your mailbox

4 min. read

Updated onOctober 4, 2023

updated onOctober 4, 2023

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Many users have complained that theirmail serversends a quota exceeding the mailbox for users is full warning message. Luckily, it can be fixed in no time.

Here, we will discuss what this warning means and what we can do to fix the mailbox quota exceeded for Outlook.

What does exceeding the Quota for the mailbox mean?

What does exceeding the Quota for the mailbox mean?

The mail server sending quota warning appears when users are about to or have exceeded the limit provided for their email account.

Addressing it is essential to avoid the problems such as not being able to login into your account and error sending emails from your mailbox. Moreover, due to this error, the receiving emails will bounce back to the sender.

What causes the mailbox quota exceeded error?

What causes the mailbox quota exceeded error?

There could be several reasons why you are getting this error; here are some of the popular ones:

What can I do if the mailbox quota is exceeded?

Before moving to the troubleshooting steps,  you should consider performing the preliminary checks first:

1. Delete older inbox items

2. Remove files from the server if POP3 is configured

3. Set the Mailbox limit

Once you have connected Exchange Online, type the following command on PowerShell, replace User ID with either GUID or email address, replace the Value parameter with the number in GB or MB, and press Enter:Set-Mailbox < UserID > -ProhibitSendQuota < Value > -ProhibitSendReceiveQuota < Value > -IssueWarningQuota

To check if the current list of quotas is attached to the mailbox, copy and paste the following command and press Enter:Get-Mailbox < User ID > | Select *quota

After connecting the Exchange Online PowerShell module, copy and paste the following command, replace the value parameter which a number in GB or MB, and press Enter:

Get-Mailbox | Set-Mailbox -ProhibitSendQuota < Value > -ProhibitSendReceiveQuota < Value > -IssueWarningQuota < Value >

So, these are the ways to fix the mail exceeded quota error on Outlook 365. Try them and let us know which worked for you in the comments below.

More about the topics:Outlook Errors,Windows 11

Loredana Harsana

Windows Software Expert

Loredana is a passionate writer with a keen interest in PC software and technology. She started off writing about mobile phones back when Samsung Galaxy S II was on top of the world and she fell in love with tech of all sorts.

Whenever she’s not at her work desk, you’ll find her enjoying refreshing tea flavors, spilling stories on paper, and listening to the radio.

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Loredana Harsana

Windows Software Expert

Loredana is a tech enthusiast who tackles mobility, privacy, and networking in easy-to follow guides for everyone.