Several users have reported similar errors in the Microsoft community forum, and today we’re going to show you the best ways to fix it.

What does the Outlook error 0x80040115 mean?

This error message appears when Outlook is unable to connect to the server. Regarding the causes, here are the most common ones:

DNS cache – It’s not uncommon for DNS cache to cause network errors. If this happens, you’ll need to flush your DNS. Add-ins – Certain add-ins can cause issues, and sometimes Outlook won’t open if certain add-ins are installed. Corrupted installation – If your Outlook installation is damaged, you won’t be able to use the client properly. The only option is to repair Outlook or reinstall it.

How do I fix Outlook error 0x80040115?

Before we start fixing this issue, you should check the following:

Check Microsoft 365 Admin Center – Visit the Admin center and make sure that your user account is not unlicensed. Create a new mail profile – In Control Panel, locate the Mail applet and use it to create a new profile. Add your email to it, and that’s it. Some users reported that deleting and recreating their profiles helped solve the issue. Repair your pst file – Use SCANPST to find and repair your pst file. Once the file is repaired, the error will be gone. Restart Microsoft Exchange Services – If you’re a server admin, you can fix this problem by restarting Exchange services.

1. Flush DNS  records

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

2.1. Open Outlook in safe mode

2.2. Find and remove add-ins

3. Repair Outlook installation

4. Change profile security settings

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. In case you’re having additional problems, check our guide on the most common Outlook errors for more fixes. Go through the steps and let us know which method helped you resolve the issue in the comments.

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