Outlook error

Question

One of my user that he connected multiple accounts to Outlook(2 work accounts and one for personal), my concern that he got an prompt error shows "0x80040115". The user told me he could not send or receive but other member all good. Any thoughtS?

Answer 1

Dear 川 李:

Good day!

Thank you for posting to Microsoft Community. We are happy to support you.

Based on your description, I understand that you have a query " Outlook error 0x80040115 "，After thorough research and research, I would like to provide you with the following information： 1.

You might have installed a third-party add-in that’s causing the error in Outlook. A way to verify if an add-in is at fault is to launch Outlook in safe mode because this opens the program with no add-ins. We’ll break this solution into three phases:

Right-click on the Start menu button and select Run from the context menu. Type Outlook/safe into the Run dialog box and click on the OK button. When Outlook starts up, choose a profile and click OK.

You have now opened Outlook in safe mode, which means that no add-ins can cause errors. Confirm if you can now send emails. If you still can’t send emails, move on to the next solution. On the other hand, if the issue is resolved and you can send emails, it’s clear that an add-in was behind the problem.

Because you can’t say for sure the third-party add-in causing the 0x80040115 error, you can find the buggy add-in by following the steps below.

First, launch Microsoft Outlook and click/tap on the File menu. Go to Options and switch to the Add-ins tab in the left-hand pane of the Outlook Options window.

Here, disable all your installed add-ins. Close Outlook and relaunch it with all the add-ins disabled and try to send an email. If it works, enable one add-in and retry the email sending.

Continue activating the third-party add-ins one by one until you receive the 0x80040115 error. When this happens, you can know that the last add-in you enabled is the culprit.

2. Launch the Command Prompt as an Administrator. Click on the Start menu button and search for “cmd.” Right-click on Command Prompt and select the Run as Administrator option.

Input the following command in the Command Prompt window and hit the ENTER key:

ipconfig/flushdns

Exit Command Prompt after flushing the DNS and try to send an email. The 0x80040115 error should be gone now. If it persists, go to the next fix.

3.
Encrypt the data between Outlook and Exchange.

Open Control Panel on your computer and set it to view large icons from the dropdown menu on the top right-hand corner of the Control Panel window.

Next, click on Mail (Microsoft Outlook) to open the Mail Setup window. Go to Profiles > Show Profiles. Here, choose the Outlook profile that’s throwing errors when you send emails and click on the Properties button. Next, continue to E-mail Accounts.

Select the account you’re trying to send emails with and click on the Change tab. Next, go to More Settings.

Finally, switch to the Security tab and mark the checkbox next to Encrypt data between Microsoft Office Outlook and Microsoft Exchange.

4.
Repair your Microsoft Outlook installation. Like every other application on your PC, your Outlook installation can get corrupt. If this happens, you are likely to get the 0x80040115 error whenever you attempt to send emails. If the other solutions fail, you may be experiencing the results of a corrupt Outlook installation. Here’s how to repair the installation.

NOTE: You can only use this solution if you installed Outlook as a separate application and not together with the Microsoft Office suite.

Right-click on the Start menu button and go to the Apps and Features option on the context menu. Look for Microsoft Outlook from the list of installed programs and click on it to open Office Troubleshooter.

Next, select the Quick Repair option in the Office Troubleshooter window and allow it to scan Outlook for errors. The error should be gone for good after this process.

However, if it persists, select the Online Repair option. Ensure that you’re connected to a reliable internet network and give the troubleshooter some time to attempt a repair. This process may take a while, but it has helped many users fix the 0x80040115 error in Outlook. 5.There is a possibility that the reason behind the error is corruption in Outlook PST files. You must repair these inaccessible and damaged PST files. For this, please refer to How to repair personal folder file (.pst) - Outlook | Microsoft Learn6.In some cases, the Outlook mail profile may be misconfigured. Creating a new Outlook profile may resolve some performance issues. Create an Outlook profile - Microsoft Support7.You can try scanning with Outlook Support and Recovery Assistant to find the problem Scan by using Microsoft Support and Recovery Assistant - Outlook | Microsoft Learn

If the above methods don't solve the problem anyway, don't worry. Welcome to update the latest progress of the issue by replying to this post, we will do our best to help you, hope you all the best! Sincerely,Winter | Microsoft Community Moderator