Troubleshooting Error 0x8004060c While Trying to Send/Receive Email from Outlook

Microsoft Outlook has given a rich interface to the business users to handle emails along with multiple other professional features. Often, people might come across some issues that result unknown errors. Most of the errors occur when a user tries to add or remove a contact, send or receives emails, add or update calendar entry, etc. If this time it’s you, go through this post to know the cause of the Outlook error 0x8004060c along with the resolution options.

Usually, while working with Outlook, most common error that users might receive is Error 0x8004060C.

There could be different error messages that report Error (0x8004060C):

  • Error Message: “Task ‘Microsoft Exchange Server – Sending’ reported error (0x8004060C): ‘The message store has reached its maximum size. To reduce the amount of data in this message store, select some items that you no longer need, and permanently delete them.”
  • Error Message: Task ‘EMAIL ADDRESS’ – Sending and Receiving’ reported error (0x8004060C): ‘Unknown Error 0x8004060C’
  • Error Message: “Task ‘Microsoft Exchange Server – Receiving’ reported error (0x8004060C): ‘Unknown Error 0x8004060C’”

Major reasons for the Outlook Error 0x8004060C:

The main reason of a corrupt PST file is its size. If you are using the older Outlook versions, then such errors might occur very often when Outlook OST/PST file has reached its maximum size limit.

Initially, the increasing size of PST file lower down the speed of the Outlook and also hampers MS Outlook Email operations like send/receive, etc. further the oversized PST might get corrupt and becomes inaccessible, which lead to data loss.

Methods to resolve the Outlook error 0x8004060C:

As we have already covered that Outlook error 0x8004060C usually occurs due to oversized PST file. In order to manage an increasing PST file size, you need to compact, archive or split it.

Here are methods to reduce the size of PST:

  • Delete unwanted emails and other items from Outlook inbox along with Deleted Items folder to remove unnecessary occupied space.
  • Compact the PST.
  • Archive PST data from your old PST files.
  • Reduce the PST file size by splitting the PST file into smaller files.

Except all the above explained methods you can also use a professional application to reduce and manage the size of your oversized PST. These tools are highly advanced and let you perform multiple operations without causing any data loss.

Methods to repair inaccessible PST:

  • Outlook offers you an inbuilt application named Scanpst.exe to deal with the OST/PST corruption issues. However, this inbuilt utility might not work for a large sized PST file and also not work for deeply corrupt OST/PST files; therefore, be ready with some advanced tools in case of disaster.
  • You can also try to re-create the OST file; it will surely help you to resolve the problem.
  • Try to update your Outlook, it might resolve the problem

In case the error is due to corrupt OST file and you are unable to resolve it, then Re-creating the .ost file could be a better choice that might help you. An OST file is the exact replica of exchange data; therefore, you don’t require backup to restore PST, just recreating the OST file can resolve your problem.

To re-create an offline Outlook Data File (.ost), follow the given steps:

Close Outlook and go to Control Panel.

Select Mail Setup dialog box title bar, where the name of the current profile will be displayed. Click Show Profiles option and select the profile name you want to recreate.

  • Go to Properties and then
  • Now, select E-mail tab -> Exchange account, and then click Change
  • Uncheck the Use Cached Exchange Mode check box and select More Settings
  • Now, select ‘Advanced’ tab -> Offline Folder File Settings and click Disable Offline Use.

Note: Disable Offline Use will only become clickable, when you uncheck Use Cached Exchange Mode check box.

  • After selecting Disable Offline Use, a new dialog box displays, here select Yes button to confirm.
  • Select Offline Folder File Settings and click OK.
  • A new dialog box appears, here click Yes button
  • Now, select the Use Cached Exchange Mode check box from Cached Exchange Mode Settings and click OK then ‘Next’ and then ‘Finish’.
  • Select ‘Close’ button to close the ‘Account Settings’ and ‘Mail Setup’ dialog boxes.

In case, even all the above explained methods didn’t help you out then, you can also try Scanost.exe or OST integrity check tool. But if this method also fails to recover your OST file, then go with a powerful OST recovery solution.

Stellar Converter for OST Tool ( is a powerful software to repair corrupt or damaged OST file and convert orphaned OST file to Outlook importable PST file while keeping the original data formatting intact. These tools are capable of restoring all the mailbox items, such as emails, attachments, contacts, notes, etc. and convert them into PST format and also let you to save the converted OST file at any desired location.


  1. Jim Whitehead March 29, 2016
    • Admin March 30, 2016
      • Marvin October 13, 2016
        • Admin October 19, 2016
  2. Justin October 14, 2018
    • Admin October 15, 2018

Leave a Reply

Your email address will not be published. Required fields are marked *