How to Fix Outlook Error Code 0x80040115 – Quick Solutions

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  • Updated on July 26th, 2025

Summary: The Outlook Error 0x80040115 occurs when users attempt to send or receive emails in Outlook. This can be due to poor network connectivity or corrupted Outlook data files. There can be more causes that may lead to this error. This blog will walk you through the manual methods to resolve the issue. If those manual methods don’t work, you can always rely on the professional Aryson OST Recovery Tool. Read the blog till the end to learn what could have caused this error and how to resolve it. Download Now   Purchase Now

Why Fix Error 0x80040115 in Outlook: Common Causes

Knowing the causes will help you understand and fix the problem faster. Common reasons include:

  • Weak or unstable internet connection
  • Corrupt or oversized PST/OST file
  • Faulty or incompatible Outlook add-ins
  • Damaged Outlook profile
  • Incorrect DNS settings or server misconfiguration
  • Antivirus or firewall interference
  • Outdated Outlook or Office build

After knowing these causes, let’s see the manual troubleshooting steps.

Methods to Fix Microsoft Outlook Error 0x80040115

Here are some quick and proven methods to resolve the 0x80040115 error:

Method 1: Check Internet Connection

Check if your network is stable or not. Try restarting your router or switching to a different network to see if that resolves the issue.

Method 2: Open Outlook in Safe Mode

Running Outlook in Safe Mode can be the causing factor.

  1. Press Win + R, type outlook.exe, then hit Enter.
  2. If Outlook works fine in Safe Mode, disable the add-ins:
  3. Go to File > Options > Add-ins.
  4. Click COM Add-ins > Go.
  5. Restart Outlook.

Method 3: Repair Your Outlook Profile

A corrupt Outlook profile is one of the reasons Outlook starts sending reported error 0x80040115.

  1. Open Control Panel, then click on Mail > Show Profiles
  2. Select your profile > Properties > Email Accounts > Repair
  3. Follow the on-screen instructions.

Method 4: Update Microsoft Outlook

Outdated versions can be the issue.

  1. Go to File > Office Account > Update > Update Now
  2. Install any available updates and restart Outlook.

Method 5: Disable Antivirus or Firewall Temporarily

Security software might be the reason for 0x80040115 Error in Outlook.

  • Disable your antivirus and firewall temporarily.
  • Open Outlook and check if the error persists
  • Don’t forget to enable them again afterward

Method 6: Trusted OST Recovery Solution

If none of the manual solutions resolve the Outlook Error 0x80040115, it seems that your OST file is severely corrupted or damaged. In such cases, using Aryson OST Recovery Tool is the best option to recover and restore your mailbox data. This utility is specifically designed to repair files that are not accessible or damaged OST files. Also, convert them into PST or other formats supported by Outlook with no data loss and formatting.

Follow the steps below to repair corrupt OST files:

  1. Download and run Aryson OST Recovery on your system.Download and run
  2. After that, click Open to browse OST files from your system.Open to browse
  3. Choose the mode of recovery and view the OST file details.Choose the mode
  4. Now, it will scan the OST file and display a preview of all recoverable mailbox data.scan the OST file
  5.  Select the folders or items you want to restore and click Save.Select the folders
  6. Finally, your OST file data is restored successfully.

Also Read: Copy SQL Server From One Server to Another SQL Server.

Conclusion

In this blog, we have explored how to fix the Outlook Error 0x80040115 using both manual and advanced methods. Start with simple checks like your internet connection, disabling add-ins, or updating Outlook. If the error continues to exist, try repairing the corrupted OST file using the recovery tool. The professional tool will automate and simplify the process.

Frequently Asked Questions:

Q1. What is error code 0x80004005 in Outlook?

Ans: This is a generic Outlook error usually caused by permission issues, corrupt data files, or security software conflicts.

Q2. What is error 0x80004005 on Remote Desktop Connection?

Ans: This error occurs due to blocked network access, incorrect login credentials, or firewall settings on the host computer.

About The Author:

Adom Smith is a DataRecoveryHelp Technology Writer. He is a technology enthusiast with over 3 years of experience in Data Recovery, IoT, Artificial Intelligence, and Robotics. He enjoys researching and sharing DIY solutions as well as tips and tricks for resolving Windows technical issues.

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