Fix Outlook error 0x8004060c during Send/Receive operation

Fix Outlook error 0x8004060c during Send/Receive operation. If you’re still seeing error code 0x8004060c in Microsoft Outlook, it’s likely because your PST file has become too large for Outlook or Office to handle. The maximum limit for a PST file is 20 GB. If you have multiple email accounts configured to use the same PST file, you may start seeing this error. In this post, we’ll show you how to fix the Outlook error 0x8004060c during Send/Receive operation.

Outlook error 0x8004060c during Send/Receive operation

When you’re finished, restart your computer. If you click on Send and Receive email or whenever it syncs, you’ll get an error message saying the limit has been reached.

Task ‘ – Receiving’ 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 (SHIFT + DEL) delete them.

  1. Delete Unnecessary emails
  2. Run Mailbox Cleanup tool
  3. Move Old Items into different PST file
  4. Compact Outlook Data File
  5. Increase Outlook PST Storage maximum size

Once everything is finished, restart your computer. This may not be necessary for accounts that use POP3, like Outlook, Live, and Gmail, but if you’re using any other type of connection, go ahead and restart.

1] Delete Unnecessary emails

Related Post: Unable to open access or start Outlook PST File in Windows 11/10

After you finish, restart your computer. If possible, find and delete cumbersome and unnecessary emails.

  • Open Outlook and go to the View tab.
  • Click on Arrange By and select attachments.

Now you need to filter out and delete emails that are not necessary.

2] Run Mailbox Cleanup tool

The Mailbox Cleanup tool can help you find and delete large emails easily. To use it, click on File > Info > Mailbox Settings > Tools > Mailbox Cleanup. You can see individual mailbox sizes, find old emails, empty the deleted items folder, and remove all alternate versions of items in your mailbox.

3] Move Old Items into different PST file

You have another tool to help you manage your old emails – the Clean up old Items feature. This tool helps you move old items to an Outlook Data file, which can help free up space in your existing PST file. Clean up old itemsYou can clean up old items from your account by selecting the folder you want to archive and setting a date. The location of the archive file will be set as the default location for the PST file.

4] Compact Outlook Data File

The size of PST files can be reduced by compacting them. The process of compacting is automatic and happens in the background when emails are deleted. You can also start the process manually. However, this cannot be done with an Offline Outlook Data File (.ost).

  • To delete items from your deleted items folder forever, go to File > Ingo > Tools > Empty deleted items folder forever.
  • Then open File > Info > Account settings.
  • On the Data Files tab, select the file you want to compact, and then select Settings.
  • On the Advanced tab, under Outlook Data File Settings, click the .ost file that you want to change, and then
  • click Change.
  • The Outlook Data File Settings dialogue has a “Compact Now” option.
  • The process of compacting the PST files will start when you click Ok.

Check if the Outlook Error 0x8004060c Send/Receive is still there or resolved.

5] Increase Outlook PST Storage maximum size

Microsoft has a limit on the number of PST files that can be used, but this can be changed. If you are not comfortable with moving files into different PSTs, then this is the best method to remove the limit.

The settings for Outlook 2016, 2019 & 365 is at:


If you’re running Outlook 2016, you can automatically add a signature to all new messages.

  • HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\PST
  • Right-click on the right pane, and create two DWORD
  • You need to enter a value in terms of MB that is higher than the maximum limit of 50 GB.
  • For the WarnLarge File Size setting, you need to enter 95% of whatever amount you set for MaxLargeFileSize.

We hope the steps were easy to follow and you were able to send and receive emails in Outlook.

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