Here's How to Fix Error 0x8004010F in Outlook

Here's How to Fix Outlook Error 0x8004010F

Microsoft Outlook is a powerful email client, but users sometimes encounter errors like 0x8004010F, which prevents Outlook from accessing offline data. This error typically occurs when Outlook cannot synchronize with the Offline Outlook Data File (OST) or when the send/receive settings are misconfigured.

In this guide, we’ll explore the causes of Outlook Error 0x8004010F and provide step-by-step solutions to resolve it quickly.

What Causes Outlook Error 0x8004010F?

The error 0x8004010F usually appears due to:

• Corrupt or missing OST file
• Incorrect send/receive settings
• Damaged Outlook profile
• Network or synchronization issues
• Outdated Outlook version

How to Fix Outlook Error 0x8004010F

Method 1: Recreate the OST File

Since the OST file may be corrupted, rebuilding it can resolve the issue:

1. Close Outlook.

2. Navigate to File Explorer → View → Show Hidden Items.

3. Go to:

    

   Copy

   C:\Users\<YourUsername>\AppData\Local\Microsoft\Outlook  

4. Delete the OST file (don’t worry, Outlook will recreate it).

5. Restart Outlook and let it synchronize again.

Method 2: Configure Send/Receive Settings

1. Open Outlook and go to Send/Receive → Send/Receive Groups → Define Send/Receive Groups.

2. Ensure the "Download Offline Address Book" option is checked.

3. Click OK and restart Outlook.

Method 3: Repair Outlook Data File (ScanPST.exe)

Microsoft provides a built-in repair tool:

1. Close Outlook.

2. Search for "ScanPST.exe" in the Windows search bar.

3. Run the tool and select your OST/PST file.

4. Click Start to scan and repair errors.

5. Restart Outlook.

If it does not work, you can try the free trial versions of Professional Outlook PST Repair & see if the recovered file works.

Method 4: Create a New Outlook Profile

A corrupted profile can trigger this error. To create a new one:

1. Open Control Panel → Mail (32-bit).

2. Click Show Profiles → Add.

3. Set up a new profile and set it as default.

4. Restart Outlook and check if the error persists.

Method 5: Update Microsoft Outlook

An outdated version may cause synchronization issues:

1. Open Outlook → File → Office Account.

2. Click Update Options → Update Now.

3. Restart Outlook after updating.

Method 6: Disable Cached Exchange Mode

1. Go to File → Account Settings.

2. Select your email account → Change.

3. Uncheck "Use Cached Exchange Mode".

4. Restart Outlook and re-enable the option if needed.

Prevent Outlook Error 0x8004010F in the Future

• Regularly back up your PST/OST files.

• Keep Outlook updated to the latest version.

• Avoid sudden system shutdowns while Outlook is running.

• Use Microsoft’s built-in repair tools periodically.

Note: Once your issue is resolved, check if there are any lasting effects on your file like lost emails and other data. If that's the case, then recover deleted emails in Outlook using professional tools available on the internet.

Conclusion

Outlook Error 0x8004010F is usually fixable by rebuilding the OST file, adjusting send/receive settings, or repairing the Outlook profile. If the issue persists, consider using Microsoft Support or professional recovery tools.

By following these steps, you can restore Outlook functionality and prevent future synchronization errors.