How to Fix New-MailboxExportRequest Couldn’t Connect To The Source Mailbox? Complete Solution
Summary: Microsoft Exchange PowerShell New-MailboxRequest command allows IT administrator and users to export the EDB mailboxes to the Outlook Data File. But in some cases while exporting the Exchange database mailboxes the command failed to create the Exchange mailbox export request and lead to error “new-mailboxexportrequest couldn’t connect to the source mailbox”. In this write-up, we will guide users to resolve the error.
Exchange Server is the best and popular mailbox server among all the IT experts and Exchange users around the globe. It provide many advanced features and in-built utility which help IT admin and users.
One such tool is the PowerShell cmdlet that bulk export mailbox to PST Exchange 2010, 2013, 2016 but due to some technical issues and errors, it is suggested to use the third party software i.e. SysTools Exchange EDB File Repair Tool that repair EDB File and mailboxes from corruption. Then, export multiple Exchange database mailboxes to the Live Exchange Server, Office 365, and multiple file formats in a hassle freeway.
Let’s Look About New-MailboxExportRequest Command
This Exchange Management Shell cmdlet allow Microsoft Exchange administrator and users to export the EDB mailboxes as well as data items to the Outlook data file from the Live Exchange Server. Before executing this command first they have to provides the Import Export Role that allow them to export the mailbox to the PST file.
After providing the permission to export mailboxes user have to provide special permission then they can able to perform the conversion process.
How This Error Occurs “New-MailboxExportRequest Couldn’t Connect To The Source Mailbox”?
When the users try to export Exchange database mailboxes to the Outlook PST file then this error occurs. Which simply means that there are some technical issue which leads to fail the PowerShell command which helps users to export the Exchange mailbox to Outlook data file. In order to perform the conversion successfully, user have to fix the error.
The Major reason behind this failed New-MailboxExportRequest Command:
1. MS Exchange Server connectivity problem
2. Messaging Application Programming Interface (MAPI) protocol is disabled
Solution to Fix the Error: “New-MailboxExportRequest Couldn’t Connect To The Source Mailbox”?
Users can try the solution given below that helps them to fix the error.
1. Check the Internet and Microsoft Exchange connectivity issue & resolve it
2. Then, login to the Outlook Web App from the Exchange Account and view that you do it successfully or not. If yes, export the Exchange inbox data manually to the Outlook data file.
3. You have to enable to the MAPI protocal to connect to the MS Outlook. If one want to export the Exchange database mailboxes then they have to check the MAPIBlockOutlookNonCachedMode feature.
4. Verify the CAS (Client Access Server) mailbox status in order to check that MAPI protocal is enabled or not. Right click on the Exchange user mailbox & verify the properties by using the cmdlet given below: 
5. Check if it is working or not user have to turn off the Messaging Application Programming Interface (MAPI) and turn on. Run the following command to disable it: 
6. Then, run the command to enable it again 
7. Finally, execute the command to export the Exchange database mailbox to MS Outlook data file 
After using the above solution you will not face error again.
Use Alternative Method to Export Exchange Database File to Outlook PST Format
The manual solution mentioned here is complex and time-consuming because it requires to run many commands which need technical skills as well as in-depth knowledge to understand. To overcome this issue or error “new-mailboxexportrequest couldn’t connect to the source mailbox” users can use the trustworthy software i.e. SysTools Exchange EDB File Repair Tool which export offline/dismounted .edb file to PST format without any comand in a hassle freeway.
This Recovery Manager For Exchange Database utiltiy easily recovers Exchange database file from corruption and recover deleted mailbox after retention period. Then after the mailbox recovery, you can easily extract mailbox from EDB file Exchange 2016/2013 and export directly to the PST and other file formats. Also, this advanced software allows users to export EDB mailbox to Live Exchange Server and Office 365 too.
Bringing It All Together
Now you have detailed information to fix this error: new-mailboxexportrequest couldn’t connect to the source mailbox. Therefore, there are various way to resolve the export the .edb file mailbox to Outlook PST format but to avoid to all the technicality and complexity users can use the automated wizard that export bulk Exchange database file to PST in a simplified manner.