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Exchange mailbox not accessible

 Yesterday I had to power down SBS2011 because it was frozen. During next several reboot, it performed CHKDSK and found/fixed a lot of corrupted files.
 When I logged in to SBS2011 server finally, Exchange mailbox database failed to mount. Microsoft Engineer got the mailbox database mounted after repair work.
 Now there is one user who can't open Outlook. When I try to send email to him internally (via Exchange server), It get this message:

Mike xxx (Mxxxx@domain.com)
There's a problem with the recipient's mailbox. Please try resending the message. If the problem continues, please contact your helpdesk.

Since this user's outlook runs in Cache mode, I see .OST file on C drive, so I opened his Outlook and started exporting it to create PST file just in case.

What options do I have at this point to bring back this user's mailbox?

(1) I do have Windows server backup as of two nights ago. (2) I know his Outlook on his computer  has every single email up to the server crash yesterday afternoon. (3) I am creating a PST file right now from his Outlook.

User Mailbox on ExchangeMailbox Options
1 Solution
CESNetwork AdministratorCommented:
Does webmail work for this user?

If you are exporting to PST, why don't you just blow away the email account and recreate it to start fresh?
sgleeAuthor Commented:
"If you are exporting to PST, why don't you just blow away the email account and recreate it to start fresh?" --> I will do that if mailbox repair fails.
Let me try mailbox repair and report back.
sgleeAuthor Commented:
Mailbox Repair RequestI began to run mailbox repair request  for more than 40 minutes. But I don't know whether it is done or not. Where can I check the progress of the repair or the result of the repair?
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CESNetwork AdministratorCommented:
sgleeAuthor Commented:
"Get-MailboxRepairRequest -Mailbox "Mike xxx" | FL" --> error. Please see below. Is this for Exchange 2016? I have Exchange 2010.

The term 'Get-MailboxRepairRequest' is not recognized as the name of a cmdlet, function, script file, or operable progr
am. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:47
+ Get-MailboxDatabase | Get-MailboxRepairRequest <<<<  | FT Identity
    + CategoryInfo          : ObjectNotFound: (Get-MailboxRepairRequest:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
sgleeAuthor Commented:
I tried to  export his mailbox to PST file by running this command:
New-MailboxExportRequest -Mailbox "Mike xxx" -FilePath \\DC1\pst\mike.pst

But I got an error:
Couldn't connect to the source mailbox.
    + CategoryInfo          : NotSpecified: (0:Int32) [New-MailboxExportRequest], RemoteTransientException
    + FullyQualifiedErrorId : 872C3FAF,Microsoft.Exchange.Management.RecipientTasks.NewMailboxExportRequest

What should I do at this point?
CESNetwork AdministratorCommented:
Try exporting from Outlook instead
sgleeAuthor Commented:
"Try exporting from Outlook instead" --> I had already done that earlier today.
CESNetwork AdministratorCommented:
There are utilities available to convert .ost to .pst.  I've used Stellar Phoenix, which is paid, but i think there are free ones as well
sgleeAuthor Commented:
I have already created PST file from user's Outlook.
Having said that, it would be nice to be able to repair this user mailbox using Exchange Shell command.
sgleeAuthor Commented:
I created a new OUTLOOK profile on the computer and it
But when I run Outlook, it says "Cannot open your default e-mail folders. Microsoft Exchange is not available. Either there are network problems or the Exchange server is down for maintenance".
The user can log onto SBS2011 network and can access his files and folders. The only thing is that his Outlook can't connect to Exchange Server in SBS2011 even though his mailbox is there.
it is like light is on, but nobody is home.
sgleeAuthor Commented:
I am currently working with Microsoft Engineer to crate a new mailbox after disabling current mailbox and trying to import PST file into the newly created mailbox for Mike. I will post the result.
Marshal HubsEmail ConsultantCommented:
Thank you CES for recommending Stellar OST to PST Converter.
@@sglee: You can easily convert your OST file to PST format with the help of this tool..If you face any issue, please let me know!!
You can download the software from here: https://www.stellarinfo.com/convert-ost-to-pst.php
Max PersianCommented:
I think there is no requirement to use any third party solution. Simply, go to Control Panel, Mail and delete the Outlook Profile. This deletes email accounts.
After that make an attempt to restart computer and open Outlook to create a new account. After creation of new email account problem will go away.
sgleeAuthor Commented:
It is all done and this is what it went.
1. After ungraceful shutdown of SBS2011 server, Exchange mailbox database failed to mount.
2. I called Microsoft and MS engineer repaired mailbox database and mounted it.
3. I discovered that one user mailbox was so corrupted because his Outlook failed to see his existing mailbox in Exchange server.
4. Since his Outlook was running in Cache mode, I was able to open his Outlook and saw every single email prior to Server Crash.  I created PST file.
5. in Exchange Server, MS engineer disabled corrupted mailbox and created a new mailbox for that user.
6. I created a new Outlook profile in user's computer and of course Outlook was empty.
7. I imported PST into new Outlook profile and restored everything.
8. I restored AutoComplete file to the new Outlook profile.

The bottom line was that MS engineer could not repair this user's mailbox.
aish smithSr DeveloperCommented:
Download the most recommended application and transfer your Offline(.ost) files into PST of Outlook with all the data items stored within it. OST to PST Software can also recover the corrupted OST file and saved it into PST and Other Formats. Download the tool from here: https://www.softknoll.com/ost-to-pst-converter/
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