This Error 0x80040154 is one of the most typical Microsoft Outlook errors, which occurs when the PST file in the Windows OS becomes corrupted. MS Outlook 2016 is an email software that allows users to send and receive emails while also storing all of their data in a PST file format.

Error 0x80040154

The Outlook PST, or Personal Storage Table, is a file that stores all of the things in your Outlook mailbox, including as emails, contacts, calendars, tasks, journals, and so on. It may be made in any version of MS Outlook, including Outlook 2016, 2013, 2010, 2007, 2003, and others. The notice ‘An unexpected problem has occurred, error code: 0x80040154 in outlook 2016′ shows occasionally when users try to send emails messages using Microsoft Outlook.

What causes error 0x80040154?

It’s possible that the Windows Registry file has become corrupt, or that some of the files have become unregistered. This issue is frequent in Outlook 2003, 2007, and 2010. The inetcomn.dll file could be the source of this PST problem. The PST files become unavailable if this DLL file is deleted or destroyed from the MS Outlook application. As a result of this Outlook unknown error code 0x80040154, the Outlook data files become corrupted.

The notice ‘An unexpected problem has occurred, error code: 0x80040154 in Outlook 2016′ shows when users try to send emails messages using MS Outlook. PST file corruption is the most common cause of all Microsoft Outlook errors. The Outlook application, as we all know, saves all of its data in a PST file format.

How can we fix error 0x80040154?

Method 1: Unregistered Files Should Be Added

  • To begin, open the Run dialogue box by clicking on the Windows Start icon.
  • After that, type regsvr32 “inercomm.dll” and press Enter.
  • Restart the computer or system after that.
  • On the computer, open the Outlook software. If the error does not appear, the problem was caused by unregistered registry files.

Method 2: Check the Anti-virus Software

If the problem cannot be solved using the above strategy, proceed to the next step. In order to do so, the user must first boot up the computer in Safe Mode and then launch the Microsoft Outlook application. If the situation persists, the error 0x80040154 error number could be the result of a computer virus. Uninstall the suspected program that contains a hazardous computer virus to solve this.

Method 3: Repair or Reinstall MS Office

Another approach you could attempt is to fix or reinstall MS Office. The steps to accomplish this are as follows:

  • Select the Start menu with a right-click.
  • Choose the Apps and Features option from the drop-down menu.
  • Select the MS Office product you wish to fix and then click Modify. The Office suite repair will begin, and once it is completed, check to see if the problem has been addressed.

Conclusion: Error 0x80040154

In Windows 10, 8, 7, and 10, the most common problem is “Outlook an unexpected issue has occurred 0x80040154.” This unidentified mistake could arise for a variety of reasons. As a result, we’ve included some manual remedies in this post to fix the problem code 0x80040154 in Outlook 2016, 2013, 2010, 2007, and 2003. When these methods fail to solve the problem, we recommend that you seek professional help. This will assist you in resolving the problem.

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