How to Resolve An Unknown Error Occurred, Error Code 0x80070003?

What is MS Outlook 0x80070003 Error Code?

In almost every formal communication, Outlook is the preferred choice among users. It offers various functionalities like a calendar, contact manager, journal, etc. For multiple users, it is used with Microsoft SharePoint server as well as Exchange server. As it is used in many ways, it is also prone to corruption.

Thus, users face Outlook 0x80070003 error which is also known as an unknown error code. This error interrupts the proper functioning of Outlook, because of which Outlook starts working slowly. Mostly, this error occurs when the application is unable to load a particular file or a folder. Let’s find the root causes of such errors in Outlook and how you can solve them.

Major Reasons for the 0x80070003 Error in Outlook

The unknown error code 0x80070003 occurs due to several causes. Here, we are describing a few of them.

• A damaged or corrupted Outlook PST file.
• If Outlook is not properly updated or facing incompatibility issues.
• The user's Outlook profile is not configured properly.
• Sometimes the virus/malware attacks your Outlook functioning.

These are the various causes behind the 0x80070003 error code. Now, we will move further to know more about the methods as well.

How to Fix the Error Code 0x80070003?

To resolve the 0x80070003 error code we are describing two different solutions. Firstly, the manual method is a little hectic and requires technical knowledge. Secondly, the professional one for a seamless recovery. Let's begin with the methods.

Method 01: Manual Method to Resolve Unknown 0x80070003 Error Occurred in Outlook

Follow the below steps to fix the unknown error code.

1. Firstly, delete the Outlook profile, it will delete only settings.
2. Now, run REGEDIT
   
3. Then, delete all the files in these folders:
   • \PST
   • \Search\
   • \Search\Catalog
4. Now, give a new name to this folder, which is present in your profile.
   
5. After this, add all your previous email settings.
6. Now, restart Outlook.

Alternatively, users can use the below method to resolve the 0x80070035 error code in the Outlook application:

1. Close Outlook & open the registry editor.
   Windows 7 user: Open Start, type regedit.exe, and press Enter.
   Windows 8 user: Open Run, type regedit.exe, and click Ok.
2. In the registry editor, find and click on the subkey:
   HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders
3. Then, locate 'Personal' in the value.
4. Now, check whether the Data field, contains a valid location or not.
5. If not sure, copy and paste the path in Windows Explorer.
6. And, then check whether it locates your files or not. Do, this in online mode.
7. If able to find your files, then double-click on the 'Personal' value.
8. After that in the Value data box, copy and paste the path of your My Document Folder. Click Ok.
   Note: In the Value data box, you will see '%USERPROFILE%\Documents'
9. Now, close the 'Registry Editor'.

Does Manual Method Have Limitations?

Yes, the manual method consists of several drawbacks. These are:

• Requires technical expertise as difficult for non-technical users.
• Involves a series of complex methods that may consume a lot of time.
• Manual troubleshooting steps may introduce viruses/malware into the system.
• Sometimes, it is risky to use this method as it may increase the chance of data loss and file corruption.

To work reliably, switch to a professional tool that is secure, quick, and effective.

Method 02: Professional Method for Unknown 0x80070003 Error Occurred in Outlook

The SysInfo PST File Recovery Tool is a reliable and secure medium to fix the unknown error code. This software is highly recommended by experts because of its easy-to-use interface. To avoid the hassle or to work effortlessly users can rely on this professional method. Also, it is easily accessible and widely compatible with all the versions of Windows OS. Furthermore, it provides many advanced inbuilt features to work with ease.

Features:

• Save the recovered PST files' data into multiple saving formats.
• No file size limitations and supports a file of up to 80GB PST.
• Also, it supports PST Files created by different versions of MS Outlook.
• It facilitates the users to preview the PST file before recovery.
• Provides a date range option to save the recoverable data between two date ranges.

Step-by-step instructions to fix the 0x80070003 error code in Outlook:

1. First, download and run the software as an administrator.
2. Search the PST files to fix and select Recovery Mode.
3. Click Ok when the scanning process is completed for selected PST files.
4. Afterward, select the folders to download. Click Save.
5. Lastly, choose PST as the file-saving option, specify a path, and click Ok.

Conclusion

In this guide, we explained both manual and professional methods to repair the unknown 0x80070003 error occurred in Outlook. While the manual method is quite hectic and time-consuming. Opting for an automated solution proves to be a great choice. So, we recommend you use the professional one to fix the unknown error code in an easy and hassle-free manner.