Unable to get rid of Mailbox Full

Not open for further replies.


Yesterday I migrated the first mailbox (my own) from Exchange 2007 to Exchange 2010.

I was not aware that mailbox quota is now a database property, and my mailbox is 255MB above default limit. So I got a Mailbox Full warning after restarting my Outlook 2010 client, fair enough.

First thing I did was raising the limits on the database - same warning. Next thing was removing all quota from my account, still no luck.

Since yesterday I have unmounted and mounted the database, restarted all client access and mailbox servers (2 members of a DAG), migrated my mailbox back to 2007, migrated again to 2010, rebooted my client PC. Next must be something with chicken blood.

When I start my Outlook 2010 i get " Mailbox Full - Your mailbox is full, you may not be able to send or receive mail" . Fact is that I can still send and receive.

When I open new mail there is a warning that " Your mailbox will be full after sending this email message. You may not be able to send messages until you remove items from the mailbox." Despite this the mail and the next one is sending fine.

This is very annoying, what can I do to make my quota changes for database and/or mailbox apply?

Ole Thomsen

AndyD_ [MVP]

Does Exchange think you are overlimit?

Check with this PS command:

Get-MailboxStatistics <youralias> | fl StorageLimitStatus

If so, then you have set something wrong somewhere. I would re-check everything.

If it shows you are under limit, then try creating a new Outlook profile, or delete the .ost in Outlook if in cache mode, or set Outlook to online mode or check via OWA and see if you still get warnings.


Cached mode seems to be the root of the error.

Right after posting it occurred to me that OWA had not given any warnings, and I tried starting Outlook 2007 (non-cached) from one of our terminal servers - no warning.

After that I disabled cached mode on my Outlook 2010 client and the error disappeared. Activating cached mode again on the same .ost brought the warning back.

Solution was disable cached mode, delete .ost and reenable cached mode. The cache file must somehow have the false quota information stuck.

Thanks for all input.

Ole Thomsen
Not open for further replies.
Thread starter Similar threads Forum Replies Date
G Unable to get rid of pop-ups in Outlook 2010. Using Outlook 1
A Unable to save recurring Meeting to Documents folder due to error Using Outlook 2
O Outlook 365 - suddenly unable to send using Gmail POP3 Using Outlook 10
S Outlook 2010 unable to change default font Using Outlook 7
Q Unable to Sync Quicken reminder with Outlook 2016 64Bit Using Outlook 1
S Unable to remove rule outlook 2010 Using Outlook 0
L Wierd Office 365 Contact unable to edit body of random contacts Using Outlook 5
X Unable to send an email from one account to another on same PC Using Outlook 2
Mark Foley Unable to subscribe to published calendar in Outlook 2010 Using Outlook 4
S Unable to Edit Contact Information in Certain Contact Folders Using Outlook 3
P Deleted Items - Unable to Iterate All of Items Outlook VBA and Custom Forms 1
G Unable to dismiss reminders from share point list calendar shared in Outlook Using Outlook 2
R Unable to install without email account Using Outlook 4
E Unable to open Outlook 2010 after adding new email account Using Outlook 4
A Outlook 2016- unable to have all subfolders expanded when opening outlook Using Outlook 11
avant-guvnor Unable to view certain emails in Outlook 2016 Using Outlook 16
M Unable to Configure Gmail Account in Outlook 2007 Using Outlook 1
D Unable to Send On Behalf of Another User Exchange Server Administration 0
J Unable to link email messages in BCM using a single microsoft office 365 account in outlook 2013 BCM (Business Contact Manager) 1
Tim King Outlook 365 unable to change accounts Using Outlook 0
R Unable to send mail using Cox.net Using Outlook 1
T Unable to 'Upload a file' using popup 'Browse' button Using Outlook 0
D Unable to add email address to contact Using Outlook 3
G Outlook calendar entry corrupted. Constant pop up when you open outlook. Unable to delete or remove. Using Outlook 2
O OL2000: Unable to create IMAP account Using Outlook 2
wallisellener Unable to reply/post/create new thread using Chrome BCM (Business Contact Manager) 5
Rupert Dragwater unable to change font sizes in some replies Using Outlook 3
C Unable to see meeting attendees Outlook 2010 Using Outlook 5
M Unable to email from Word or Excel Using Outlook 11
O Unable to check name. Using Outlook 3
T Unable to create contacts subfolder in EAS profile Using Outlook.com accounts in Outlook 6
UncleBill Unable to delete items from gmail IMAP Trash using Outlook 2010 Outlook VBA and Custom Forms 5
B Unable to search delegated mailfile Using Outlook 3
K Unable to activate QueryBuilder in Outlook 2010 (32bit) with Windows 7 (64bit) Using Outlook 1
C Unable to forward email with URL Using Outlook 2
R New computer, OL2010 unable to display shared calendar appointments Exchange Server Administration 3
S unable to send email from my second address (outlook 2007) Using Outlook 2
A "Unable to display the folder" error when accessing Group mailbox Using Outlook 0
C Outlook 2010, two exchange mailboxes configured.Unable to see 2ndrymeeting req Using Outlook 2
H Outlook 2010 unable to send iCloud account e-mail after iOS 7 upgrade Using Outlook 12
B Unable to apply rule on Exchange server functional account Exchange Server Administration 1
J Archives: Unable to locate emails Using Outlook 1
S Unable to send or reeceive email in new Exchange 2010 Exchange Server Administration 0
B Unable to Accept meetings that are already Tentatively accepted Using Outlook 2
M Unable to read HTML Using Outlook 2
A Unable to send with attachments in Outlook 2013 (Exchange ActiveSync) Using Outlook 2
F Outlook 2010 unable to delete emails from scanner Using Outlook 1
T Unable to open msg files in Outlook 2010 Using Outlook 11
R catalog Content Index failed-Unable to mount database.(hr=0x80004005,ec=-501) Exchange Server Administration 0
R problem with incomming e-mail I am unable to print full e-mail letter Using Outlook 1
Similar threads