FIX: Microsoft Outlook error 0x80040115

by Tashreef Shareef
Tashreef Shareef
Tashreef Shareef
Windows & Software Expert
Tashreef Shareef is a software developer turned tech writer. He discovered his interest in technology after reading a tech magazine accidentally. Now he writes about everything tech from... read more
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  • Microsoft is one of the word's most well-known personal information managers.
  • However, users have been reporting an error code 0x80040115.
  • To read more about this amazing program, check out our dedicated Outlook Hub.
  • Even more guides can be found on our Outlook Fix page.
Outlook email error
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When sending an email using Microsoft Outlook, the users have encountered the Microsoft Outlook error 0x80040115. This error can also occur when receiving an email through Outlook.

Several users have reported similar errors in the Microsoft community forum.

For the last two days I have been getting Error 0x80040115 when Sending/Receiving Email through Outlook. The error message says – Sending and receiving reported error (0x80040115). The connection to the Microsoft Exchange Server is unavailable. Outlook must be online or connected to complete this action.

This error can occur due to an oversized PST file or if the installation is corrupted. In this article, we have listed a couple of troubleshooting tips to help you resolve the Microsoft Outlook error 0x80040115 in Windows.

How do I fix Microsoft Outlook error 0x80040115?

1. Flush DNS  records

Microsoft Outlook error 0x80040115
  1. Press the Windows key and type cmd.
  2. Right-click on Command Prompt and select Run as Administrator.
  3. In the Command Prompt, type the following command and hit enter to execute:
    ipconfig /flushDNS
  4. Close Command Prompt and check for any improvements.

This error can occur due to a DNS configuration error. Multiple users have reported that flushing the DNS has helped them resolve the error.

2. Check for add-in issues

Sending and receiving reported error (0x80040115)

2.1. Open Outlook in safe mode

  1. Press Windows Key + R to open Run.
  2. Type the following and click OK:
    Outlook /safe
  3. If prompted, choose a profile and click OK.
  4. When the Outlook opens, try sending an email.
  5. If the error does not occur in safe mode, you may have a third-party add-in installed that is creating conflict with the program.

2.2. Find and remove add-ins

  1. Launch Outlook.
  2. Click on File and select Options.
  3. In the Outlook Options window, select the Add-ins tab from the left pane.
  4. Disable all the third-party add-ins installed.
  5. Relaunch Outlook and check for any improvements.

3. Repair Outlook installation

Sending and receiving reported error (0x80040115)
  1. Press Windows Key + R to open Run.
  2. Type control and click OK.
  3. In Control Panel, go to Programs > Programs and Features.
  4. Select the Outlook client and click on Change.
  5. In the Office troubleshooter window, you will see the following options:
    • Quick Repair
      • First, select this option.
      • It will quickly scan the installation files for issues and fix them without the need for an internet connection.
    • Online Repair
      • If the issue persists, try Online Repair.
      • This option requires the internet and may take longer to find and fix installation-related issues with the program.
  6. Close the troubleshooter and launch Outlook. Check for any improvements.

4. Change profile security settings

Sending and receiving reported error
  1. Press the Windows key and type control.
  2. Click on Control Panel.
  3. In Control Panel, search for Mail.
  4. Click on Mail ( Microsoft Outlook 2016) (32-bit) option.
  5. In the Mail Setup window, click the Show Profiles button.
  6. Select your profile and click the Properties button.
  7. Click the Email Accounts button.
  8. Select your email account and click the Change button.
    Microsoft Outlook error 0x80040115
  9. Click the More Settings button.
  10. Open the Security tab.
    Microsoft Outlook error 0x80040115
  11. Make sure Encrypt data between Microsoft Office Outlook and Microsoft Exchange is checked.
  12. Click OK to save the changes.
  13. Relaunch the Outlook client and check for any improvements.

The Microsoft Outlook error 0x80040115 error can make it difficult to send and receive emails. However, we have listed all the possible fixes to help you resolve the issue in no time.

Go through the steps and let us know which method helped you resolve the issue in the comments.

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