How to fix error 0x80040115 in Outlook?

While using Outlook, users sometimes encounter various errors that interrupt email communication. A frequently encountered error is Outlook error 0x80040115. Outlook error 0x80040115 occurs when a user sends an email but Outlook is unable to synchronize the changes to the Mailbox server or send the email due to issues with the Outlook application or OST file.

The complete error message is as follows:

The task "youremailaccount@xyz.com" reported an error (0x80040115). We can't complete this operation because we can't contact the server right now. Please try again later.

As a result, Outlook users cannot send new messages and may not even receive new emails. Users of all Outlook versions, including Outlook 2007, 2010, 2013, 2016, 2019, and 2021, experience this error.

In this article, we will discuss the reasons behind error 0x80040115 and share ways to resolve it.

Causes of Error 0X80040115 in OUTLOOK

Error 0x80040115 may occur due to one or more of the following reasons:

Extra-large or large offline cache (OST)

OST files are prone to corruption or become inaccessible due to inconsistencies due to being too large or too large. Additionally, if the OST exceeds the recommended file size limit, Outlook may freeze, stop responding, and users may experience delays in sending/receiving emails due to synchronization issues. In this case, error 0x80040115 is common because Outlook cannot connect to the mailbox server or synchronize mail items.

Poor network connection

While OST allows users to continue working offline, it cannot sync mailboxes or send/receive emails when the network is poor or unavailable. Additionally, error 0x80040115 may pop up if the user tries to sync or update the folder manually using Outlook option.

Incompatible or faulty add-ins

Faulty or incompatible add-ins can severely impact Outlook performance and may affect the way Outlook works, resulting in Error 0x80040115.

Incorrect installation of Outlook

Incorrect installation of the Microsoft Outlook program on Windows systems may also cause error 0x8004115.

Methods to resolve error 0x80040115 in OUTLOOK

Error 0x80040115 may resolve automatically after some time. Therefore, you can wait and recheck your Outlook. However, if not, follow the methods below to fix Outlook error 0x80040115.

Check the network connection

An unstable or poor network connection can prevent Outlook from connecting to the mailbox server. If a user attempts to manually synchronize mail items in this situation, Outlook may fail with error 0x80040115. Therefore, you should first check that your network is stable and you are not facing any issues while connecting to your Mailbox server. One way to verify this is to log into your email using a web browser or webmail.

To resolve connection issues, you can check the Ethernet cable connected to the router, restart the router, or replug the network cable. You can also contact your service provider to resolve your network connection issues.

Restart the system

In most cases, restarting the system can resolve connection and other minor issues. Therefore, before applying any advanced troubleshooting solutions, you should first try to restart your system. After restarting, make sure you are connected to the internet. Then start Outlook and sync the mail items manually.

Check available storage

Low storage space on the drive where the OST file is stored can also affect Outlook performance and may prevent it from storing mail items. Therefore, it may also fail to send new emails and display error 0x80040115. Therefore, it is important to ensure that the drive where the OST is stored (usually the C: drive) has more than 10% of the total drive size available.

Refresh DNS

DNS cache issues can also cause connection issues. So, to resolve any such issue, you can follow the steps below to flush the DNS cache:

· Open the command prompt as administrator.

· Run the following commands in a command prompt window.

ipconfig /flushdns

· After this, restart Outlook and click on Update File under Send/Receive tab folder.

· Check if the error has been resolved.

Disable Outlook add-ins

If an incompatible or faulty add-in is the reason behind the error, you can start Outlook in safe mode. When you start Outlook in safe mode, it only opens basic add-ins.

To open Outlook in safe mode, follow these steps:

• Press the Windows R key.
• Type Outlook /safe in the Run dialog box.
• Press Enter or click OK.
• Then select your profile and click OK.

If Outlook opens without any problems, the add-in is causing the error. You can remove the problematic add-on to resolve the error.

To disable an add-in and locate the faulty add-in, follow these steps:

· In Outlook, go to File > Options and click Add-ons.

· Click the Start... button and uncheck all Add-ins.

· Click OK and restart Outlook.

· Try a manual sync by clicking the Send/Receive All Folders option under the Send/Receive tab.

Now, try activating add-ins one at a time and watch Outlook. This can help you find faulty or incompatible add-ons that are causing error 0x80040115. Once found, uninstall it and activate other add-ins to continue using Outlook.

Repair Corrupted OST File

Using the Inbox Repair Tool or SCANPST.exe, you can try to repair the OST file and possibly resolve error 0x80040115. Although Microsoft recommends using SCANPST.exe for PST file repair, you can run and fix minor issues with OST files that may cause error 0x80040115.

But before repairing OST file, you must know the file location. Follow the steps below to find the OST file location on your Windows system:

• Launch Microsoft Outlook.
• Go to File > Information > Account Settings > Account Settings.
• Now, click on the Data Files tab and select the OST file associated with your profile.
• Then, click the Open file location button.
• This will open a File Explorer window showing the location of the OST file on your Windows system.

Once you find the OST file, follow the steps below to repair it:

· Go to C:\Program Files\Microsoft Office\Officexx or C:\Program Files(x86)\Microsoft Office\Officexx.

· Find and launch the SCANPST tool.

· Click Browse and select the OST file.

· After selecting the OST file, click Start. The tool will scan the OST for errors.

· Click to fix.

· After repair, launch Outlook and check if the error is resolved.

Recreate the OST file

If repairing the OST file does not work, you can recreate the OST file to resolve the issue. To do this, you just need to rename or delete your OST file and restart Outlook. It will create a new OST file in the default location and synchronize all mail items from the mailbox server.

Follow the given steps to rename the OST file:

• Open the file explorer window, click on the "View" tab and click on " File extension".
• Right-click on the OST file and select "Rename".
• Type .old at the end of the file name and press " Enter ".

To delete the .OST file, follow these steps:

• Close the Outlook application and go to C:\Users\UserName\AppData\LocalMicrosoft\outlook file clamp position.
• Locate the OST file associated with your account profile and delete it.

Now restart Outlook. It will create a new OST file.

Repair Outlook Installation

Outlook is part of the Microsoft Office suite. You can try to repair Microsoft Office programs. Here are the steps:

· Open Control Panel and click Uninstall a program.

· Select Microsoft Office from the list and click Change.

· Select Repair from the options and click Continue.

· The repair process may take a while to complete.

· After repair, you can start Outlook to check whether error 0x80040115 has been repaired.

You can also uninstall or reinstall MS Outlook to resolve the error.

Create a new Outlook profile

A damaged or corrupted profile may also interrupt Outlook functionality and cause error 0x80040115. You can try setting up a new Outlook profile to resolve this error.

The steps are as follows:

· Open Control Panel, search, and click Mail.

· Click Show Profile, then click Add.

· Type a profile name and click OK.

· Follow the Email Account Setup Wizard to configure this new email profile.

· Once setup is complete, select Always use this profile and select a profile from the drop-down list.

· Click Apply>OK.

· Start Outlook. This should resolve error 0x80040115.

The methods discussed in this article can help you fix Outlook error 0x80040115. However, if these methods don't work, it is recommended that you use an OST to PST converter software such as Stellar Converter for OST to convert your existing OST file into Outlook-importable PST format. This way you can make a backup and not lose individual mail items that are not synchronized with the Mailbox server due to error 0x80040115. The software also helps you convert any inaccessible OST file to PST, HTML, PDF, RTF, EML or MSG format. You can also export mail items extracted from OST files directly to Office 365 or live Exchange mailboxes.

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