14 Ways to Fix Microsoft Outlook Error 0x80040115


14 Ways to Fix Microsoft Outlook Error 0x80040115

Microsoft Outlook is one of the most popular email clients used by many people for personal and business communication. It is a great tool for organizing, sending, and receiving emails, as well as for managing contacts, tasks, and calendars. However, like any other software, Microsoft Outlook is prone to errors and one of the most common errors is Microsoft Outlook Error 0x80040115, which prevents users from being able to send and receive emails. This article will provide an overview of what error 0x80040115 is, how it affects the user’s Outlook experience, and possible solutions to solve the issue.

14 Ways to Fix Microsoft Outlook Error 0x80040115

How to Fix Microsoft Outlook Error 0x80040115

This error can be caused by a variety of factors, and it is important to identify the underlying cause in order to fix it.

  • One of the most common causes of Microsoft Outlook Error 0x80040115 is network connection issues. If the computer is experiencing problems connecting to the internet, then Outlook may not be able to send or receive emails.
  • Another common cause of Outlook Error 0x80040115 is storage problems. If the computer is running out of disk space, then Outlook may be unable to store emails correctly.
  • Outlook Error code 0x80040115 can be caused by incorrect DNS settings. If the DNS settings are incorrect, then Outlook may not be able to locate the email server.
  • Another possible cause of Error 0x80040115 Outlook is conflicting add-ins. If the computer has multiple add-ins installed, then they may be conflicting with each other and causing Outlook to crash.
  • In some cases, Outlook Error 0x80040115 Windows 10 can be caused by antivirus interruptions. If the computer has an antivirus program installed, then it may be interfering with Outlook and causing it to crash.
  • The Outlook Error 0x80040115 can be caused by corrupt OST files.
  • In some cases, Outlook Error 0x80040115 can be caused by a corrupt installation file. If the installation file is corrupt, then Outlook may not be able to install correctly.
  • Finally, Outlook Error 0x80040115 can be caused by any issues on your Windows profile too. If the profile is corrupt, then Outlook may not be able to access it correctly.

Fortunately, there are several methods to fix Microsoft Outlook error 0x80040115, and this section will cover all of them.

Method 1: Troubleshoot Network Connection

One of the most common causes of this error is a broken or failed network connection. It is important to check if your network connection is working properly before you try to troubleshoot any other potential issues.

It can be difficult to determine whether the issue you are experiencing with Outlook Error 0x80040115 is due to a network issue or another problem. If your computer is connected to the internet, but you still experience this error when trying to access Outlook, then there may be an issue with your network connection.

  • Start by checking that all cables and wires are secure and that the router or modem has not lost its signal strength or been reset recently.
  • You should also ensure that no other programs are using up too much of your bandwidth as this could be causing the problem as well.
  • If there are any internet connectivity issues, check our guide How to Troubleshoot Network Connectivity Problems on Windows 10 to troubleshoot the same.

Run Network Adapter troubleshooter

Method 2: Restart PC

Restarting your PC is an important maintenance task that should be done on a regular basis. Restarting can help to fix issues like Microsoft Outlook Error 0x80040115. This error can cause problems with sending emails and other basic functions in Outlook, resulting in a lot of frustration and lost time.

All it takes is a few steps to get started: Shut down your PC, wait at least 30 seconds, then turn it back on. Once restarted, open Outlook and confirm if the error has been fixed.

Our guide on 6 Ways to Reboot or Restart a Windows 10 Computer will help you throughout this process.

Restart PC

Also Read: Fix Your Microsoft Exchange Administrator Has Blocked This Version of Outlook

Method 3: Start Microsoft Outlook in Safe Mode

When you face issues like Outlook Error code 0x80040115, it’s essential to start Microsoft Outlook in Safe Mode.

Starting Microsoft Outlook in Safe Mode allows users to troubleshoot errors without risking any data loss. Once this is done, Microsoft Outlook will open up without any add-ins or customization files loaded – allowing you to isolate and fix the issue at hand with minimal disruption caused.

Read our guide on How to Start Outlook in Safe Mode to do this task and check if you have fixed the issue.

Click the Yes button in order to run Outlook in Safe mode

Method 4: Free Up Hard Disk Storage on PC

We all know that free up storage is important for our computers to run smoothly, however it’s even more important when it comes to fixing Microsoft Outlook Error 0x80040115. This error code can be caused by having too many emails and files stored on your device, so freeing up some extra space should help you fix the issue.

By taking some simple steps to free up storage in Outlook, you can avoid receiving Outlook Error code 0x80040115 in the future. First, delete any unnecessary emails that are cluttering your inbox and take out any large attachments that are lingering in your sent mail folder. To do this, follow our guide, 10 Ways to Free Up Hard Disk Space on Windows 10, and implement the same on your PC.

Storage Sense

Also Read: How to Recover Deleted Draft in Outlook 365

Method 5: Flush DNS Cache

Flush DNS is an important step to ensure a computer’s internet connectivity. It involves refreshing the Domain Name System (DNS) cache and re-establishing connections to the network. Flushing DNS helps to fix certain errors, such as Error 0x80040115 Outlook, which can occur when a user attempts to access their email account.

Follow our guide How to Flush and Reset the DNS Cache to implement the task.

ipconfig flushdns command

Method 6: Disable Outlook Add-Ins

Add-ins are a great way to extend the functionality of Microsoft Outlook, but if they are not managed properly, they can cause issues like Microsoft Outlook Error 0x80040115.

When you install a new add-in for Outlook, it is added to your list of installed add-ins. Over time this list can become cluttered with unused or redundant applications that may conflict with each other and cause the error 0x80040115. To prevent this from happening, it is important to disable any unnecessary or outdated Outlook add-ins on a regular basis.

1. Hit the Windows key, type Outlook, and click on Open.

launch the Outlook app

2. Click on the FILE tab in the top bar of the Outlook app.

Click on the File tab. 14 Ways to Fix Microsoft Outlook Error 0x80040115

3. Click on the Options tab in the left pane of the window to launch the Outlook Options window.

Click on the Options tab

4. Click on the Add-Ins tab in the left pane of the window, select the option COM Add-ins in the drop-down menu in the Manage option, and click on the Go… button next to the option.

click on the Go… button. 14 Ways to Fix Microsoft Outlook Error 0x80040115

5. In the COM Add-Ins window, deselect all the unnecessary add-ins in the Outlook app and click on the OK button to manage the add-ins.

deselect all the unnecessary add ins in the Outlook app and click on the OK button

6. Close the Outlook app by clicking on the Close button. Then, relaunch the Outlook app from the search bar.

Also Read: Fix Outlook Trying to Connect to Server on Windows 10

Method 7: Temporarily Disable Antivirus (If Applicable)

Disabling Antivirus is an important step to fix Outlook Error code 0x80040115. This error is usually caused by a corrupted antivirus program installed on the computer. It can interfere with Outlook and other email programs, preventing them from running correctly. By disabling the antivirus, we can ensure that all our emails are sent and received without any problems.

Read our guide on How to Disable Antivirus Temporarily on Windows 10 and follow the instructions to disable your Antivirus program temporarily on your PC.

Disable Antivirus Temporarily. 14 Ways to Fix Microsoft Outlook Error 0x80040115

Method 8: Disable Firewall Protection (Not Recommended)

Disabling firewall protection can be an important step towards fixing Microsoft Outlook Error 0x80040115. This error code is caused by a problem with firewall settings which restrict access to the necessary ports for Outlook to connect and send emails.

In order to successfully disable your firewall, it’s important that you understand how the different configurations in your computer interact with each other. You should familiarize yourself with the various security levels and options available on each of them, so that you can customize it according to your own needs.

Furthermore, it’s wise to research online tutorials or contact technical support if you encounter any difficulty while attempting this task.

Follow our guide How to Disable Windows 10 Firewall to implement the task.

How to Disable Windows 10 Firewall

Check if you have fixed Error 0x80040115 Outlook or not.

Also Read: Fix Currently Unable to Send Your Message on Outlook Mobile

Method 9: Repair Corrupt OST File

Having an OST file that has become corrupt can be incredibly frustrating. Not only does this mean you won’t be able to access your Outlook data, but it can also result in a range of errors that may hinder normal operations. One of the most common Outlook error codes associated with a corrupted OST file is 0x80040115. To ensure your Outlook data remains accessible and functioning properly, it’s important to find ways to repair the corrupt OST file and fix any errors related to it.

Before repairing the OST file, you must know the file location. Follow the instructions to execute the process.

1. Go to Microsoft Outlook on your PC.

2. Now, navigate to File > Info > Account Settings > Account Settings.

Repair the Corrupt OST File. 14 Ways to Fix Microsoft Outlook Error 0x80040115

3. Switch to the Data Files tab and click on the OST file that is associated with your profile.

4. Now, click on Open File Location button.

click on Open File Location… button

5. This opens the File Explorer window that shows the location of the OST file on your PC.

6. Then, navigate to the following location path.

C:\Program Files\Microsoft Office\Officexx 


C:\Program Files(x86)\Microsoft Office\Officexx

7. Find and launch the SCANPST tool by double-clicking on it.

Find and launch the SCANPST tool

8. Then, select the Browse button and click on the OST file. Then, click on Start. The will scan the OST file for errors.

9. Now, click on Repair and wait for the process to be completed.

Method 10: Delete LocalAppData Folder

Delete LocalAppData Folder is an important action that should be taken to fix Microsoft Outlook Error 0x80040115. This error can occur due to corrupt or outdated files in the LocalAppData folder, which can cause Outlook to become unresponsive and display the error message. To fix this problem, it is recommended that users delete the contents of their LocalAppData folder.

1. Open the Run dialog box by hitting the Windows + R keys simultaneously.

2. Type %localappdata% and hit Enter key to open the required folder.

Note: Alternately, follow the folder path C:\Users\username\AppData\Local in File Explorer.

Type localappdata and hit Enter to open the required folder.14 Ways to Fix Microsoft Outlook Error 0x80040115

3. Go to the Microsoft folder. Right-click Outlook folder and choose Delete, as depicted below.

go to Microsoft localappdata folder and delete the Outlook folder

4. Finally, restart the PC once and then try to open Outlook. Check if you face Outlook stuck on processing issue again.

Also Read: How to Turn Outlook Email Read Receipt On Off

Method 11: Reset Outlook Navigation Pane

The Reset Outlook Navigation Pane button can be found in the account settings section of Microsoft Outlook. It helps users reset mail accounts and remove any corrupt data from their system. By doing this, they can avoid any future incidents of Fix Outlook Error code 0x80040115 occurring again and improve their overall experience with this program. The navigation pane will also be updated with any new changes or updates that have been made since the last time it was reset by the user.

1. Launch the Run dialog box, by pressing Windows + R keys simultaneously.

2. Type outlook.exe /resetnavpane and hit Enter key to reset Outlook navigation pane.


Method 12: Repair MS Outlook

You might be facing Microsoft Outlook Error 0x80040115 issue if Outlook is damaged. It can be because of any temporary glitch, virus attack or missed updated. You can repair Outlook application to resolve this issue. To implement that follow these steps below.

1. Hit the Windows key, type Control Panel and click on Open.

Type Control Panel in the Windows search bar

2. Set View by > Large icons and click on Programs and Features from the given options.

choose Programs and Features from the list

3. Locate the MS Office Suite installed on your PC, right-click on it and click Change, as shown.

right click on Microsoft Office and select Change option in Programs and Features

4. Choose Quick Repair and click on the Repair button to continue, as shown highlighted.

Choose Quick Repair and click on the Repair button to continue. 14 Ways to Fix Microsoft Outlook Error 0x80040115

5. Click on Yes in the User Account Control pop-up that appears.

6. Follow the on-screen instructions to finish the repair process.

Method 13: Repair Outlook Profile

It is important to repair Outlook Profile in order to maintain the integrity of your system. Outook is an essential software for many businesses and organizations, however, issues like Error 0x80040115 Outlook can occur that might lead to data loss or system damage.

Note: The first step in repairing Outlook profile is to back up all emails, contacts and other data stored in the application. This will ensure that you have a backup available should something go wrong during the repair process.

1. Launch Outlook in Safe Mode.

Note: If you are signed into multiple accounts, choose the problematic account from the drop-down list first.

2. Go to File > Account Settings and choose Account Settings… from the menu, as depicted.

Click on Account Settings and choose Account Settings…

3. Then, in the Email tab, click the Repair… option, as shown.

Go to Email tab and click Repair option. 14 Ways to Fix Microsoft Outlook Error 0x80040115

4. A repair Window will appear. Follow the on-screen prompts to fix your account.

Also Read: Fix Outlook Password Prompt Reappearing

Method 14: Create New Outlook Profile

A simple and easy way to fix this issue is to create a new Outlook profile. Doing so will help ensure your email is running correctly and can help you avoid any potential future issues like Outlook Error 0x80040115 Windows 10. Creating a new Outlook profile can be done in just a few steps as instructed below.

1. Press the Windows key, type Control Panel and click on Open.

Open Control Panel

2. Set the View by mode to Large icons, then click on Mail (Microsoft Outlook).

Click on Mail (Microsoft Office)

3. Click on Show Profiles.

Click on Show Profiles

4. Select the profile and click on Remove.

Select the profile and click on Remove. 14 Ways to Fix Microsoft Outlook Error 0x80040115

5. Click on Yes.

Click on Yes

6. Then, click on Add to create a new profile.

click on Add to create a new profile

7. Enter the details and account information and follow the on-screen instructions.

8. Finally, restart the Outlook app.


We hope that this guide was helpful and you were able to fix Microsoft Outlook Error 0x80040115 issue. Let us know which method worked for you the best to solve Outlook error code 0x80040115. If you have any queries or suggestions then feel free to drop them in the comments section.


Jaspreet Singh Ghuman

Jaspreet Singh Ghuman


Passionate Professional Blogger, Freelancer, WordPress Enthusiast, Digital Marketer, Web Developer, Server Operator, Networking Expert. Empowering online presence with diverse skills.

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