Use this Enstella OST to PST Recovery Software to Can I Fix Error 0x8004060c on Outlook. Every user is worried about these issues and then confused about the solution. The software has multiple conversion formats and mailbox items. This Software has supported on Outlook version Office 365, 2021, 2019, 2016, 2013, 2010, 2007, 2003, 2002, 2000, 98. This tool is 100% safe and secure for your data and you can easily convert any format.

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Fix #1: Compact Outlook Data File
When you delete items from your mailbox in Outlook, you may notice that the PST file size isn’t reduced. This is because the deleted data is replaced with white space. To remove this white space, you need to compact the PST file.

To compact your Outlook Data File, follow these steps:

Open Outlook and go to File > Account Settings > Account Settings.
In the Account Settings window that opens, click the Data Files
Select the Outlook Data File that you want to compress and click the Settings
In the Outlook Data File window that opens, click the Compact Now Outlook will compact the file automatically.
Fix #2: Clean up your Mailbox
Certain emails take up more space in your mailbox than others. These emails generally have large attachments. You can use the Mailbox Cleanup function in Outlook to remove these emails. To do that, follow these steps:

Open Outlook and go to File > Info.
Open the Tools menu in the right pane and select the option Mailbox Cleanup.
In the Mailbox Cleanup window that opens, select the option Find items larger than and in the input field, select the appropriate value. Then click the Find The application will find and list emails of size greater than the value selected by you.
Check the emails and delete the ones that you don’t need. Now, try to send or receive emails and see if the 0x8004060c error is resolved.

Regards,
Willjoe