- Clear DNS Cache: Delete temporary cached data.
- Remove Outlook faulty add-ins: Disable conflicting ones.
- Change the profile settings: Turn on the necessary settings.
- Create a new Outlook profile: Establish a fresh connection.
- Repair the Office 365 programs: Fix the installed program.
You are about to send an important email, but suddenly Outlook displays this message:
This unexpected error can occur in different Outlook versions, including 2007, 2010, 2013, 2016, 2019, and 2021.
At first, it seems serious, but you can fix the error with simple steps. Go through the blog to find the appropriate solutions to fix Outlook error 0x80040115 and restore normal email functionality.
Know The Causes of The Error 0x80040115 in Outlook
Here are the possible reasons behind the Outlook Error code 0x80040115.
- DNS cache data issues.
- Outlook add-ins conflicts.
- Corrupted Outlook data file.
- Damaged or corrupted profile.
- Mail server synchronization issues.
Methods to Resolve Error 0x80040115 in Outlook [Detailed Steps]
I have tried methods like checking the internet connection or restarting Outlook, but nothing worked for me. So, I tried the below ones for the error resolution, and they fixed it. You can also try them:
Method 1. Remove the DNS Cache Data
DNS Cache refers to the temporary database that contains all the recent activities. This creates conflicts and causes the Outlook 0x80040115 error code. Clear them now to resolve the issue.
The process is as follows:
- Press Windows+R to open the Run box, type CMD, then press enter.
- In the command column, type: ipconfig/flushdns.

- After clearing the Cache from your device, you will receive a success confirmation message.
Now, make sure if Outlook is working properly.
Method 2. Check the Installed Outlook Add-ins
Follow the provided steps to troubleshoot Outlook error 0x80040115.
Section 1. Launch Outlook in Safe Mode
Run the Outlook application in Safe Mode to identify if the problem is caused by faulty add-ins or not. Here are the complete steps:
- Close Outlook if it’s open.
- Press Windows+R to open the Run box.
- Now type ‘Outlook.exe /safe’ and click OK.

Section 2. Remove Faulty or Damaged Add-ins
Try the steps below to remove the faulty add-ins once you have identified the issue. Here’s how:
- In Outlook, select File and then click on Options.
- Select ‘Add-ins’ and click on ‘Go.’

- Now, uncheck all the Outlook Add-ins and then click OK.

- Once completed, close Outlook and restart it again.
Method 3. Change the Profile Settings
Incorrect profile settings can also lead to Outlook error 0x80040115. So, modify the settings to fix the issue using the below steps:
- Go to Control Panel > Mail (Microsoft Outlook).
- Click Show Profiles.

- Choose your profile and click on Properties.
- Click on Email account.

- Select the Exchange server account and select the Change option.

- Click on More option and go to the Security tab.
- Check the Encrypt data between Outlook and Microsoft Exchange option; and click OK.
Method 4. Create A New Outlook Profile
Sometimes, a damaged or corrupt Outlook profile can cause the error. So, create a new profile to fix Outlook error 0x80040115 by establishing a fresh connection. Here are the steps:
- Go to Control Panel. Select Mail (Microsoft Outlook).
- Choose Show profiles.
- Click on the Add button to create a new profile.
- Enter a new profile name and click on OK.

Try sending and receiving emails by opening Outlook again and see if you can send emails or not.
Method 5. Repair the Microsoft Office Programs
Damages in the installed Office 365 program can also cause the error. Repair it using the provided steps:
- Close all the Office applications if open, including Outlook.
- In the search bar, type: appwiz.cpland press enter.
- Moving ahead, click on MS Office >Change.
- Now, select the Quick Repair option and press Repair.

What If Outlook Data File Is Corrupted? – Find Repair Solutions
Outlook data file corruption or damage can cause different errors like cannot start Microsoft Outlook invalid XML error, and Outlook error 0x80040115. Use the Inbox Repair tool to repair the data files. Here’s how:
- Close all Outlook related applications, if opened.
- Now, in file explorer go the path: C:\Program Files\Microsoft Office\root\Office XX.
- Open ScanPST.exe.
- Click on Browse to scan PST files on your device. Select the PST file and click on Start.

- After the scan, select Repair.

If the native repair tool fails to remove the corruption, then it means the file is highly damaged. In such cases, switch to professional software like Recoveryfix for file repair. The PST Repair tool fixes broken or inaccessible PST files and keeps mailbox items intact. It also supports multiple file saving formats like MBOX, MSG, EML, PDF, DOC, and many more.
Closing Notes
Here, the blog highlighted the best methods to fix Outlook error 0x80040115. All the solutions address different causes that were responsible for the error. You can use them to resolve the issue without taking any further assistance.
However, go with the recommended solution if you are dealing with highly corrupted Outlook data files. The software also helps users to fix oversized PST files by splitting them into smaller parts.
FAQs: Queries Resolved in Seconds
Q- Can this error delete my Outlook emails?
Ans- No, the error occurs due to a connectivity or synchronization error. Your emails are in the data file.
Q- Is it possible to resolve error 0x80040115 in Outlook via Work Offline mode?
Ans- The Work Offline mode sometimes helps to fix the error. You can enable it for 10 seconds and disable it to check whether the issue is resolved or not.
Q- How to fix Outlook error 0x80040115 in Office 365?
Ans- You can fix the error in Office 365by the following these steps:
- Reconfigure your email account.
- Check the Microsoft service status.
- Repair the Office 365 installed program.
Q- Can I fix the error by reinstalling the Outlook application?
Ans- Reinstalling the application can only fix the minor corruption, but data file repair is a more effective method.
