How to Fix Microsoft Outlook error 0x80040115 ?

Are you really trying to receive or send items in your Outlook & do you get stuck with an outlook error 0x80040115 ? If yes, then Outlook is not able to connect to the mail server. This kind of error occurrence is pretty common & most times resolves itself after a while. However, if the issue is persistent or you do not want to wait a while, then you can easily fix it with a few simple steps below.

Resolve Error 0x80040115 in Outlook

The error 0x80040115 actually suggests that your Outlook is not able to connect to the server due to certain internal big & glitches. The most traditional reason for this is a corrupted DNS cache that can be easily fixed without much hassle.

However, before we start, be sure that you can connect to the internet. Without the internet connection, you cannot reach the mail server either. And also be sure you have sufficient disk space free on your C: drive.


Flush DNS Cache

It is something that you can do without facing any further hassle. You just need to clear the local cache after which your device will rebuild it automatically.

  • In the very first place, hold & press the keys Windows key + X.
  • Afterward, locate and choose the Command Prompt or Windows PowerShell
  • Now, type: ipconfig/flushDNS& hit the Enter key
  • Once done, simply close the PowerShell
  • Now it’s time to reboot the Outlook & try to send or receive any stuff.

For the majority of users, this resolves the Outlook error code 0x80040115. But in case you still find the error, keep reading for other solutions. 

Disable Add-Ins

Add-ins in Outlook can often cause major to minor issues with receiving or sending mail. So, before you begin with disabling add-ins, you need to test if the add-ins are causing the Outlook error 0x80040115. For opening Outlook in safe mode, follow these instructions:

Initially, open the Command Prompt by pressing the Windows + X keys simultaneously

  • Simple enter Outlook /safe & hit the Enter key
  • After performing this instruction, you can select a profile and just hit the OK button.
  • Now, try to send or receive any email

Well, if the issue still bothers you, move towards the next step. But if you can send or receive mail with Outlook in safe mode, then you just have to check the plugins. Check out the following steps to disable the non-Microsoft add-ins.

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And in case, you’ve multiple add-ons, simply disable them one by one & verify if you can send or receive mail after rebooting the Outlook.

  • In Outlook, move towards File and hit the option
  • Afterwards, choose the Add-ins that are located on the left side
  • Now, hit the Go… at the bottom of the screen in order to invoke the Add-in dialog
  • Now, you need to turn off the add-ins that do not begin with Microsoft.
  • Once you are done with all these instructions, simply close the dialog & reboot the Outlook

Simply verify if the error 0x8004115 gets fixed.

Repair corrupt OST file to resolve 0x80040115

Outlook usually stores a local copy of the mail in the OST file. And these files can get quite large, especially if you’ve plenty of mail or handle different mailboxes. And when the OST file gets corrupted, you are not able to receive & send any mail.

In the majority of cases, you can easily repair the OST file. Simply utilize the built-in repair utility. Such repairs can take a few hours though, up to 30 minutes on heavy mailboxes.

Close Outlook

Visit C:\Program Files (x86)\Microsoft Office\root\Office16 or C:\Program Files\Microsoft Office\root\Office 16 depending on how you installed Office.

Invoke the SCANPST

Well, if it locates a problem with your OST file, then you’ll get the opportunity to repair it at the end. Invoke the Outlook & check if the error 0x80040115 gets when you receive & send emails.

Make a new Outlook Profile

If the Outlook error 0x80040115 persists & you will be able to access the internet then creating a new Outlook profile can fix the problem. However, bear in mind, any email which is still in the Concept or Outbox folder will be removed with this action.

  • Initially, Invoke the Start Menu
  • Then, enter Control Panel in the search bar & hit the OK button
  • Once done, simply invoke the Control Panel App
  • Choose Mail (Microsoft Outlook) (32-bit). If you do not find it, just be sure you modify the view to Small Icons located on the top right corner

Choose Show Profiles

  • The very first step to add a new Profile – simply give it some random name & type your account details
  • Modify the ‘Always use this profile” option to the “new profile”.
  • Invoke Outlook & verify if you will be able to receive or send mail

Now, you will find an additional profile therefore; leave the old one in place so that you will be able to switch back. In the new account, if you find the same error 0x80040115, then move towards the mail profiles & eradicate the old one. It will eliminate the local copy of the mail from the PC, freeing up space.

In certain cases, you might require to eliminate all the outdated data & profiles first. Simply eliminate the profiles from the Mail dialog & eradicate each and every file from the following location:

Be sure to replace the username with your account. On the other hand, enter: %localappdata% in the address bar.

Wrapping Up

In the majority of cases flushing the DNS must fix the error 0x80040115 in Outlook. Be sure you reboot Outlook after clearing the DNS. And if you’re an Office 365 user, then access your mail through Outlook Online. Good luck!!!