OWA Mailbox unavailable

Not open for further replies.


Outlook version
Outlook 2010 64 bit
Email Account
Exchange Server
Hi there! I hope this has not been posted to death as I could not for the life of me find a topic on this issue.

I do IT for a lawyers office that recently added a new employee to their roster. They use a hosted (with MS) office365. Normal procedure is to create a new email in the admin panel then add it into outlook. Cake. They also have a shared inbox that is already being accessed by others in the organization.

I cannot link these two accounts to save my life. I can open both of them in OWA, separate, but cannot open the shared account from the user account. (i've been going to the upper right and selecting "open other mailbox". I get the error "Your mailbox appers to be unavailable. Try to access it again in 10 seconds. If you see this error again, contact your helpdesk.)

I AM the helpdesk...

Any clues?


Outlook version
Outlook 2010 64 bit
Email Account
Exchange Server
Forgot to add that the user currently has global admin privs.

Diane Poremsky

Senior Member
Outlook version
Outlook 2016 32 bit
Email Account
Office 365 Exchange
If restarting the server, or at least the Information store and replication services doesn't fix it, it can mean permissions are messed up. Try removing then adding fullaccess permissions.

Remove-Mailbox -identity alias -User alias -AccessRights FullAccess

Add-Mailbox -identity alias -User alias -AccessRights FullAccess
Not open for further replies.
Similar threads
Thread starter Title Forum Replies Date
B Searching OWA Additional Mailbox - in which Secondary folder is the email? Using Outlook 1
G LinkedIn tab missing in Outlook 365 (but working in OWA) Using Outlook 0
P OWA Settings->Calendar->Events from Email; Setting changes do not hold Using Outlook 1
G How to have domain client use owa server instead of exchange server while connect to network Using Outlook 1
J OWA vs. Outlook 2016 Bandwidth Exchange Server Administration 1
O Synchronize safe persons Outlook 2016 -> Outlook Web Access (OWA) Using Outlook 30
C OWA External Access - No URL / URL Invalid Exchange Server Administration 2
Diane Poremsky New Office365 Feature: URL Preview in OWA Using Outlook 0
J IPAD Outlook OWA App - Help using Exchange 2007 Using Outlook 4
S Cannot disable OWA light Exchange Server Administration 5
J Stuck using OWA Exchange Server Administration 0
T Outlook Calendar Sync MY GOAL: see work calendar on home desktop w/o OWA Using Outlook 2
T Sync OWA? Exchange Server Administration 0
O Multiple simulteniously opened OWA 2010 accounts in one browser work fine ! Using Outlook 3
S Newly added user doesn't show up in GAL but available in OWA, Using Outlook 0
B Customize OWA page to open in a new window when logging in Exchange Server Administration 1
B OWA Calendar Views not available Exchange Server Administration 2
O outlook 2010, owa, exchange Exchange Server Administration 2
D OWA and Windows 8 Exchange Server Administration 1
G Outlook 2013: Getting meeting invites in OWA format Using Outlook 9
R Lost Outlook 2007 message found in OWA Using Outlook 4
D OWA Send invitation AS (not from) Exchange Server Administration 1
E OWA phones home too much? Exchange Server Administration 1
S Cannot open any attachment from OWA Exchange Server Administration 2
T Syncing OWA 2010 to Outlook 2007 Exchange Server Administration 15
R OWA can't delete mail Exchange Server Administration 8
J Outlook and owa access Using Outlook 1
S Track emails in OWA Exchange Server Administration 1
T OWA and post dating Exchange Server Administration 1
S Unable to Sync Phones but OWA connects Exchange Server Administration 1
B [SOLVED] Forced to type Domain/username for OWA 2003 with IE 7 or 8 Exchange Server Administration 3
M Attachments cannot be opened in Outlook, OWA works fine Using Outlook 2
T OWA Folders Using Outlook 0
A Managing GAL via OWA Exchange Server Administration 5
J Mail read in OWA won't appear in Outlook Exchange Server Administration 1
1 mobile OS or apps for sync of all OWA/exchange PIM functions Exchange Server Administration 3
A OWA Certificate Expired Issue Using Outlook 1
S Signature size limit for OWA / Exchange 2010 Exchange Server Administration 10
U OWA 2010 Limited Exchange Server Administration 4
M OWA - Dead GUI, Won't open inbox messages. Exchange Server Administration 1
T OWA 2007 recent recipients and OWA 2010 nicknames Exchange Server Administration 5
J Unable to access public folders in Outlook 2007 on Exchange 2010. OWA PF works fine Using Outlook 7
E Java script issue OWA Exchange 2010 Exchange Server Administration 5
R New users creating get page cannot be displayed when accessing OWA Exchange Server Administration 16
D OWA access gives error HTTP 400 bad request Using Outlook 15
D Send on behalf of does not store the base mailbox Using Outlook 0
S Email Macros to go to a SHARED Outlook mailbox Draft folder...NOT my personal Outlook Draft folder Using Outlook 2
C Outlook 365 Multiple different Signatures on Shared Mailbox Using Outlook 0
P Tweak vba so it can target another mailbox Outlook VBA and Custom Forms 1
S Outlook 365 Shared mailbox contact group member numbers not matching Using Outlook 0

Similar threads