How to fix OneDrive error code 0x8004de40?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

The error code 0x8004de40 indicates that OneDrive cannot sync a file because it is open in another program. This error can happen if the file is open in a text editor, such as Microsoft Word, or if it is being used by another program, such as a virus scanner. OneDrive will try to sync the file again the next time it is saved.

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1. Check your internet connection

  1. Open the "Settings" app on your phone.
  2. Tap on the "Wi-Fi" icon.
  3. Tap on the "Advanced" button.
  4. Select the "Network" option.
  5. Check the "Status" column to see if your internet connection is connected.
  6. If your internet connection is not connected, try to restart your router.
  7. If your internet connection is still not connected, try to reconnect your onedrive account.
  8. If you still experience onedrive error code 0x8004de40, please contact onedrive customer service.

2. Restart the OneDrive sync client

To restart the OneDrive sync client, follow these steps:

  1. From the Start menu, type "cmd" and press Enter.
  2. At the command prompt, type the following: net stop OneDrive sync
  3. At the command prompt, type the following: net start OneDrive sync
  4. If prompted, enter your administrator password.

3. Check for updates to the OneDrive sync client

  1. Open the OneDrive app.
  2. Click the three lines in the top left corner of the window.
  3. Under "Settings", click "Sync".
  4. On the "Sync" tab, click "Check for updates".
  5. If there are any updates, they will be listed on the "Available updates" tab. Click "Update now".
  6. If there are no updates, click "Close".

4. Try signing out of OneDrive and signing back in

  1. Open OneDrive and sign in.
  2. Click the three lines in the top left corner of the window.
  3. Select Sign out.
  4. Click Sign in.
  5. Enter your password and click Sign in.
  6. If prompted to sign in with a Microsoft account, sign in.
  7. Click the three lines in the top left corner of the window and select Sign out again.
  8. Click Sign in.
  9. Enter your password and click Sign in.

5. Reset OneDrive

The first step is to open OneDrive on your computer. Next, click on the three lines in the top left corner of the window. Next, select "Settings." On the "Settings" page, click on the "Reset OneDrive" button. On the "Reset OneDrive" page, enter your Microsoft account login information, and click on the " Reset " button. " button. After your account has been reset, click on the "Finish" button. button. OneDrive should now be reset and should be working correctly.

6. Delete the OneDrive temporary files

  1. Launch Microsoft OneDrive on your computer.
  2. Click the Files tab and select Options.
  3. Under the General heading, click Delete Files.
  4. To confirm the deletion, click Delete.
  5. If you are prompted to save any files before deleting them, click OK.
  6. If you are not prompted to save any files, click Delete.
  7. OneDrive will remove the files in the next few minutes.

If the answers above didn't work then you should also try:

  1. Repair OneDrive
  2. Re-register the OneDrive COM component