export mailbox error in exchange 2010

dear i have problem when i have tried to export certain mailbox to PST it gives me the below message , otherwise i didn't have any problem in exporting all other mailboxes ,
[PS] C:\Users\ibrahim.nakip\Desktop>New-MailboxExportRequest -Mailbox k.nosseir -FilePath "\\\pst\k.nosseir.p
The name must be unique per mailbox. There isn't a default name available for a new request owned by mailbox
'alkancit.local/Alkan Holding/Khaled Nosseir-knosseir'. Please clean up existing requests by using the Remove cmdlet
or specify a unique name.
    + CategoryInfo          : InvalidArgument: (k.nosseir:MailboxOrMailUserIdParameter) [New-MailboxExportRequest], No
    + FullyQualifiedErrorId : 4EDFD416,Microsoft.Exchange.Management.RecipientTasks.NewMailboxExportRequest
    + PSComputerName        : exch-db.alkancit.local
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AlkannetworksAuthor Commented:
also i have run the command to remove all mailbox request but didn't solve the problem

Get-MailboxExportRequest -Status Completed | Remove-MailboxExportRequest
With the above you tried to romove completed requests ...try the following :
>Get-MailboxExportRequest | fl

Then take a note of the identity (XXXXX) for the request  you are interested

Then run :
>Get-MailboxExportRequest -Identity XXXXX | Remove-MailboxExportRequest

However you reached the limit of 10 requests because the request failed or not ?
If you have trouble exporting it to pst, try New-MailboxExportRequest with the switch BadItemLimit
AlkannetworksAuthor Commented:
i have run what u told me to do and gives me the below error

[PS] C:\Users\ibrahim.nakip\Desktop>Get-MailboxExportRequest -Identity  alkancit.local/Alkan Holding/Khaled Nosseir-knos
seir | Remove-MailboxExportRequest
Cannot process argument transformation on parameter 'Identity'. Cannot convert value "alkancit.local/Alkan" to type
"Microsoft.Exchange.Management.RecipientTasks.MailboxExportRequestIdParameter". Error: "Invalid format for the
Identity "alkancit.local/Alkan".  Correct formats are: "RequestGuid" or "MailboxName\RequestName"."
    + CategoryInfo          : InvalidData: (:) [Get-MailboxExportRequest], ParameterBindin...mationException
    + FullyQualifiedErrorId : ParameterArgumentTransformationError,Get-MailboxExportRequest
    + PSComputerName        : exch-db.alkancit.local
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AlkannetworksAuthor Commented:
and please what u mean about
New-MailboxExportRequest with the switch BadItemLimit
ah ok
instead of the Identity take a note of the guid should something li ke this :
then run again
>Get-MailboxExportRequest -RequestGuid XXXXX | Remove-MailboxExportRequest
AlkannetworksAuthor Commented:
I Didnt found it for the need maibox
if the export request fails because of some corrupted items in the pst,  you can try for example:
> New-MailboxExportRequest  - BadItemLimit 4 ( where 4 is the number of corrupted items to be skiped)
Be default BadItemLimit  is 0 .. meaning the export will fail if there are any corrupted items
could you post the result of the command ?

>Get-MailboxExportRequest Khaled Nosseir-knosseir | fl
I meant  
>Get-MailboxExportRequestStatistics Khaled Nosseir-knosseir | fl
Also you could still export the ailbox if you use the name swith like this

New-MailboxExportRequest -Name MyNextAttempt -Mailbox k.nosseir -FilePath "\\\pst\k.nosseir.pst"

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AlkannetworksAuthor Commented:
i have solved the probelm after i have run the below command

>Get-MailboxExportRequest -Status Failed | Remove-MailboxExportRequest -Confirm:$false
AlkannetworksAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for Alkannetworks's comment #a39501901

for the following reason:

it works fine
AlkannetworksAuthor Commented:
dear sirakov
many thanks for u help
You are wellcome.
I still think I pointed you to the right direction
AlkannetworksAuthor Commented:
Marshal HubsEmail ConsultantCommented:
To export certain mailbox to PST, you can use Stellar EDB to PST Converter. You can select one or more mailbox or full EDB file by clicking check boxes & convert it to PST.

Reference: Below Screenshot

The software also provides option to select and exports multiple EDB file to PST format. Exports mailboxes to Live Exchange & Office 365.
Download the demo version from Official website: https://www.stellarinfo.com/email-repair/edb-pst-converter.php
alina kenvinCommented:
SysInspire newly designed the best EDB to PST Converter Software that securely repair damaged, corrupted exchange mailboxes database and also convert the mailboxes of EDB file to PST Outlook file along with maintains all EDB mailboxes items like- contacts, inbox items, journals, notes, task and appointments. EDB to PST Recovery Software allows users add multiple folders and their emails having attachments for doing migration of them into multiple types of formats like- PST, EML, MSG, EMLX and MBOX format.

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Read more:- EDB to PST
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