How to Fix Error 0x8004de40 When Syncing Onedrive on Windows

This practical guide walks through how to fix error 0x8004de40 when syncing onedrive on Windows, explains the main requirements, and highlights common issues that may appear along the way.

What is error 0x8004de40?

When you encounter this problem, you will receive an error message like this:

Microsoft OneDrive There was a problem connecting to OneDrive Check your Internet connection, then try again. (Error Code: 0x8004de40) Try again

This error occurs when the OneDrive app has difficulty connecting to the cloud platform. The main cause of this problem is poor or unstable internet connection.

But there are also some users getting error 0x8004de40 while connecting to the internet normally. Except for OneDrive, all other apps have a stable internet connection.

How to fix error 0x8004de40

If you get error 0x8004de40, you can try the solutions suggested by MakeTake below in the correct order. 

1. Check Internet connection

The first thing you need to try is to reset your internet connection. If you are using a wired network, you can unplug it and reconnect it. In case of using WiFi network, you can power off the modem and turn it on again.

The steps are as follows:

• Press the off button on the modem, router and the computer
• Press the on button on the modem and wait for the indicator lights to glow steadily
• Press the on button on the router and also wait for the indicator light to steady
• Finally turn on the computer and then check to see if the error 0x8004de40 has been resolved.

If not, please move on to the next solution.

2. Change internet connection properties

Proceed as follows:

• Press the Windows + R key combination to open the Run dialog box
• In the Run dialog box , type inetcpl.cpl and press Enter to enable Internet Properties
• On the Internet Properties window switch to the Advanced tab
• Check the items: Use TLS 1.0, Use TLS 1.1 and Use TLS 1.2
• Click Apply and OK to save the changes
• Restart the computer

Now check to see if the error has been fixed. If not, we move on to the third solution.

3. Disable Proxy settings (if any)

The Proxy server can cause error 0x8004de40 when some interference occurs blocking communication between the OneDrive app on your Windows 10 machine and the internet or cloud platform. In this case, try disabling or removing the Proxy servers from your computer to see if the problem is fixed.

4. Reset OneDrive

If the above solutions haven't helped you solve the 0x8004de40 error, you can try to set up OneDrive again. Here's how to do it:

• Press the Windows + R key combination to open the Run dialog box
• In the Run dialog box , enter the command % localappdata% MicrosoftOneDriveonedrive.exe / reset and press Enter to reset OneDrive

You should see the OneDrive icon in the notification area disappear and then reappear. This may take a few minutes, and once it's complete your OneDrive app will be reverted back to the original default settings.

If after a minute or two you don't see the OneDrive icon appearing, you can open the Run dialog box to run the following command:

%localappdata%MicrosoftOneDriveonedrive.exe

5. Reset Winsock

Windows Sockets, or Winsock, is a programming interface that determines how programs handle input and output requests for internet applications. Winsock can crash when you download the wrong file containing malicious code. When Winsock is broken you will no longer be able to connect to the internet.

Before resetting Winsock you should back up your system to minimize risks. How to reset Winsock is as follows:

• Open Command Prompt with Administrator rights
• Type the command netsh winsock reset and press Enter
• Restart the computer after the statement by the Command Prompt implementation

Wish you successfully overcome error 0x8004de40!