Here’s How to Fix Outlook Error Code 0x80004001: Not Implemented Error

In this article, we are going to deal with “Cannot Add PST, Microsoft Outlook an unknown error occurred code 0x80004001”. The blog examines the reasons that cause this error, its types and other issues that appear after this error. We have discussed manual as well as an automated solution to resolve the Outlook error 0x80004001.

0x80004001 is the most common error that occurred in Microsoft Outlook. This is the hexadecimal format of the error caused due to the problem in the application or some Windows related issues. Many times the user gets confused about whether it is an application related problem or Windows-bound issues. Whatever the problem is, it is important to rectify them without any delay. Let us move forward to the reasons for this message “Microsoft Outlook an unknown error occurred code 0x80004001”.

The full error message generally reads:

“Cannot add PST. Microsoft Outlook – An unknown error occurred. Code: 0x80004001.”

It can appear in various scenarios such as:

• Adding a PST file
• Sending/receiving emails
• Launching Outlook after a system crash
• Synchronizing Outlook with IMAP or Exchange

Now, without further ado, let’s dive right into the solutions to resolve the error But before that, let’s take a look at the top reasons why this error occurs in the first place.

Reasons Why Error 0x80004001 Code System File Corruption Occurs

The main and mostly found reason for this Outlook error is system file damage. Due to which corrupt file entries get stored in the system and which is responsible for the error. If so, then it is indispensable to take important steps to protect the system.

• Bug Check Screen: Also known as Blue Screen or stop error screen. Microsoft Windows displays Outlook error code 0x80004001 in case of only fatal error system or a when a critical error has occurred. Generally, it gets displayed when an unrecoverable fault causes the system to crash subsequently.
• DLL Error: This message can also occur when the Dynamic Link Library is missing from the system. The DLL is considered the most prominent component of any program or system. If the Dynamic Link Library is missing, the application would not run in any case.
• Application Freeze: Another reason is application freeze. The system is running in the backend but the screen is not responding frequently. The app will not work properly and can suddenly shut down. This can be the alarming sign that there is something wrong with the application.

In the above section, we have discussed almost all the reasons of Microsoft Outlook an Unknown Error Occurred Code 0x80004001. In the next section, we are going to deal with the solution to resolve the 0x80004001 error.

Download the DLL File

As we said above that this error occurs due the DLL for corruption or missing. So the best option is to download the DLL file from the reliable source. After that paste it to the Outlook folder and restart the Outlook program to check the error resolved or not.

Remove Damage Using Inbox Repair Tool

As we said above that Outlook data file corruption is also be the reason for this types of error. So in this situation you can use the Outlook inbuilt Inbox Repair Tool, to fix minor issues of PST file. But before using this tool you have to find where is ScanPST.exe is located. And once you will able to find the utility, then use it easily.

Well, the ScanPST is nice approach to fix the errors of Outlook PST file, but only when you have facing minor corruption. Because in the case of major corruption the tool not that much responsive.

Best Way to Resolve the Error Code 0x80004001 in Outlook

As there is no manual solution available to overcome the issue, we recommend you to go for the automated solution. Use Outlook Recovery Software to repair multiple PST files in one go. The foremost benefit of this tool it recovers hard deleted data and can overcome minor and major both types of corruption. Some of the interesting features of the tool are described below:

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• Recover deleted Outlook emails and other items
• Export Outlook Data file to PST, EML, MSG & HTML
• Repair PST file which is minorly as well as highly corrupted
• Compatible UNICODE as well as ANSI PST files in batch
• Date based filter to import only specific file which is desired only at that time
• Recover .bak file created by scanpst.exe & repair Archive file in Outlook
• Users can easily preview their data and can see it in the Red Color
• Removes and Decrypt OpenPGP & SMIME encryption from PST emails

Working Steps to Resolve Error Code 0x80004001

• Download the software from the site and Launch it on your system.
• Add your PST file in the tool and preview with attachments.
• Click on the Export and recover your PST file and get healthy Outlook files.
• In this step, you can export restored Outlook emails into different other formats. You can export into PST, EML, MSG & HTML.

Ways to Prevent Microsoft Outlook Error Code 0x80004001 in Future

You can also use this method to prevent Microsoft Outlook an unknown error occurred error code 0x80004001 before its occurrence.

1. Open Outlook only in Safe Mode: Sometimes this method will work to avoid the 0x80004001 error code. Using this mode will remove add-ons and can allow working in a hassle-free manner.
2. Do not store PST on Network: Always keep the backup of your recent PST files on your system as saving Outlook files over a network can lead to corruption. Once a PST file is damaged over a network, it cannot be retrieved.
3. Adjust the Antivirus or Firewall on your PC: Configure firewall and antivirus in such a way that it does not conflict with Outlook settings. If the antivirus is interfering with Outlook settings, it will lead to error.

Also, Read: How to Fix Outlook Couldn’t Start Last Time Safe Mode Could Help You Troubleshoot the Problem?

Frequently Asked Questions

Q. What is Outlook Error Code 0x80004001?

When the MS Outlook application fails to execute a function properly, the error 0x80004001 is triggered. It is a common Outlook issue which indicates “Not Implemented” or “Unsupported Function” error in Componenet Object Model (COM) operations within Outlook or Windows.

Q. What causes error 0x80004001 in Microsoft Outlook?

It is mainly caused by faulty add-ins, missing DLL files, or damaged file systems.

Q. How do I prevent this error permanently?

To prevent the error code 0x80004001 permanently, use the suggested PST Repair Tool by SysTools. Along with that, make sure your firewall /antivirus settings don’t conflict with MS OUtlook, and maintain regualr PST file backups.

Conclusion

To sum up, the Microsoft Outlook error 0x80004001 usually points to missing DLL files, Windows registry issues, or PST files that keep getting corrupted. While manual fixes like downloading DLLs or using ScanPST.exe might work for minor corruption, they often fail with severe PST damage. In such cases, using a professional tool ensures complete repair in just a few clicks.