Outlook Error 0x80040115: Solve This Issue With Effective Methods

MS Outlook is a web-based suite from Microsoft. It helps the users by bringing all your email, calendar events, and files together in the same field. However, there are some basic problems that the users are facing, the Outlook error 0x80040115 is one of them.

The error code 0x80040115 on Outlook arises due to the corrupt Outlook installation or oversized PST file. Moreover, due to the bad internet connection or the presence of corrupt third-party add-ins are also resulting in such an error. 

Check out this article thoroughly, and till the end to lean the complete solutions for the error. 

The complete error message on the screen will be displayed as “Microsoft Exchange Server reported an error (0x80040115): The connection to the Microsoft Exchange Server is unavailable. Outlook must be connected to complete this action”.

Try out the below-said solutions one-by-one as arranged here until the error gets resolved. But before learning the solutions, it is better to understand the error at first.

What is Microsoft Outlook 365 Error 0x80040115?

The users who are facing the error 0x80040115 had to go through the following problems:

  • The email which is sent by you to the senders are not successfully sent but in return, it displays the error message window.
  • Sometimes, due to the said error code, the users are not receiving the email which was sent to them.
  • A few of the times, it is seen that though the email which is sent by you is stored in the sent folder, actually, it was not. It is another effect of the error code 0x80040115.

After knowing the error code effects, let’s now step towards the solutions.

Quick and Easy Methods to Resolve the Outlook Error 0x80040115:

There are some effective workarounds that you can try to fix the Outlook error 0x80040115 efficiently.

Before proceeding with the core steps of solving the error 0x80040115, it is better to run a virus scan on your PC. A virus scanning is not only effective in solving the Outlook error but along with that, it also enhances your system performance.

Run a Virus Scan

Windows Defender, the default Windows Security tool works well in solving the virus infection-related issues. To run a Full scan using the Windows Defender tool, go through the steps provided below:

Firstly, navigate the mouse pointer onto the Windows logo, and then right-click on it. Alternatively, tap both the Windows and the letter X key at a time to get the same Menu window.

From the Menu window, select the Settings option. Next, under the Settings window click on “Update & Security”. After that, from the left-hand of the Settings window, click on Windows Security.

Further, from the right-hand side of the window, click on the “Open Windows Defender Security Center” button. Next, click on the Shield symboled icon. This will get you the Virus and threat protection section window open. From here, click on the Advanced scan link.

Now, under the Advanced window, enable the checkbox for Full. Next, click on the “Scan now” button. 

Further, wait until the full scan is done. If a virus is present on your computer, then it will get removed by this Windows Defender scanning. Next, retry to use the MS Outlook to check if the issue gets resolved or not. 

After the virus scanning, if the problem still exists, then try the core methods as arranged below until you resolve the error.

Method 1: Flush DNS (Domain Name System)

The foremost task that you need to perform after the virus scan if the Outlook error 0x80040115 exists is flushing the DNS cache files. The steps to perform this method are as follows:

  1. At first, press down both the Windows and the letter X key at a time to get the Menu window on the screen.
  2. Next, under the Menu window, select the “Command Prompt (Admin)” option. This will get you the black background Administrator: Command Prompt window on the screen.
  3. Now, in the Administrator: Command Prompt window type ipconfig /flushdns.
  4. At last, hit the Enter button to execute the command.


Once flushing the DNS server, retry to use the Outlook service to check if the error still persists or not. If you are lucky, then this foremost method will get you a positive result.

Method 2: Run Outlook in Safe Mode

Running the Outlook application in a Safe Mode is another best method to get rid of the Outlook error 0x80040115. Many a time, due to the damaged Add-ins in the Outlook, this error occurs. The steps to follow to try this solution are as below:

Tap both the Windows and the letter R key at a time to get the Run bar window. Next, ensure that the Run bar is empty. If any command is already present in the Run bar, then you need to use the Backspace key to remove the command.

In the empty Run bar, type “outlook /safe”, without the quotations, and then click on OK or hit the Enter button. Now, this will open up the Outlook window with Safe Mode. After that, check if the error message still occurs or not. Hopefully, this time you will get the error resolved.

If turning on the Outlook in Safe Mode get you the issue resolved, then it indicates that the error arises due to a third-party Add-ins. If this is the case, then by removing the third-party Add-ins from your Outlook account, you can resolve the matter. 

Follow the further steps to remove Add-ins from your Outlook account.

Click on the File tab under the Outlook window, at first. After that, from the File tab Menu window, select Options. At the left-hand side panel of the Outlook Options window, click on Add-ins. This will get you the installed Add-ins list at the right-hand side panel of the window.

From the Add-ins list, remove all the third-party Add-ins, and then close all the open windows on your PC. Next, restart your computer and reopen your Outlook window and go for use it. Hopefully, this time you will get the success.

Method 3: Modify Profile Settings

After running the Outlook in Safe Mode, if still, the error message gets up, then you need to go for this solution, that is, Modify Profile Settings. The steps to perform this method are as follows:

  • First of all, press down the Windows button along with the letter R to open the Run bar window. 
  • Next, in the Run bar type control. After that, tap the Enter button, this will get you the Control Panel window on the screen.
  • Further, check the “View by” section of the Control Panel that is present at the top right-hand side of the window. Ensure that the View by is set as Large icons. To confirm this, you need to expand the option for View by, and then under the Menu, select the Large icons.
  • Now, under the Control Panel window, click on the Mail option to open the window. Further, under the Mail Setup- Outlook window, click on the “Show Profiles” button that is present under the Profiles section. Next, select your Profile and click on Properties.

 

After that, click on your account and then select the Change option. To continue, click on More Settings, that you will get at the bottom left-hand of the window. 

Further, click on the Security tab. Next, ensure that the check-box for “Encrypt data between Microsoft Office Outlook and Microsoft Exchange” is enabled. If not, then turn the check-box active. Lastly, click on the OK button to save the changes.

Next, restart your computer. Tap the Windows button, first, and then from the left-hand side of the Start menu, click on the Power icon. After that, under the Menu window select the Restart option. Wait until the system turns back on.

Now, hopefully, you will not get the error back when you use the Outlook application.

Method 4: Repair Outlook Installation

After trying the above methods, if the error code 0x80040115 on Outlook still return back while you are using it, then go for the Repair Outlook Installation method. The steps to follow to perform this task is very simple and are as given below:

At first, tap the Windows key along with the letter X. Next, from the Menu window, click on Apps and Features. After that, from the available list, select the Microsoft Outlook. Next, click on Modify. However, if you are a Microsoft Office user, then you need to select the Modify option for it.

Further, enable the checkbox for the Quick Repair option and then click on the Repair button. Now, wait until the process is over. Once the repairing is done, the success message will pop-ups on the screen. Next, restart the MS Outlook, and hopefully, you will get the error resolved.

All these are the complete methods by the application of which you can solve the Outlook error 0x80040115. Take an expert’s help to get the problem resolved in a fast and hassle-free manner.

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