5 Ways to Fix “An Unexpected Network Error Has Occurred” on Windows

Network errors are nothing new to veteran Windows users and can be caused by a number of reasons. A specific problem that appears when users try to transfer large files from another device or server is the error message “An unexpected network error has occurred”. This is usually caused by an overprotective antivirus program, corrupted Windows search service, and inconsistencies within the system.

Although the error message indicates that there is a problem with the network, simply checking your Wi-Fi connection will not do the trick. Let’s see how to solve this problem with the utilities already present in your Windows operating system.


1. Disable your antivirus and Windows Defender

If you cannot transfer large files from your network driver to PC to laptop, the first thing to do is to temporarily disable any security programs you are using on your system. Indeed, while security programs keep your system safe from threats, there are times when they mistakenly classify legitimate processes as harmful, interrupting their operation.

In this method, we will disable third-party antivirus and Windows Defender Firewall.

1. How to Disable Third-Party Antivirus Program

If you are using a third-party antivirus program, you can usually disable it by right-clicking its icon in the taskbar and choosing the Disable option from the context menu.

If that doesn’t work for you, try to launch the program and search for the Temporarily disable antivirus option. The exact steps will be different for each program, but the basic principle of the disable function remains the same.

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2. How to Disable Windows Defender Firewall

Windows Defender Firewall also has a history of blocking secure processes following false alarms. To turn it off, follow the steps below:

  1. Type Windows Defender Firewall in Windows Search and click Open. Alternatively, you can also manually access the firewall by going to Control Panel > System and security > Windows Defender Firewall.
  2. Choose Enable or disable Windows Firewall from the left pane.
  3. Check it Disable Windows Firewall options under public and private network settings.
  4. Click on OKAY to apply the changes and restart your PC.

2. Check hard drive format

Generally, Windows operating systems use two types of file systems: File Allocation Table (FAT) and New Technology File System (NTFS). These file systems play a crucial role in managing system drives and the information stored on them.

If you encounter error code 0x8007003B on your system, we recommend that you check the formatting of the destination drive where you plan to transfer the files. If the drive supports FAT32 format, you cannot transfer single files larger than 4 GB. Attempting to do so is likely to result in a crash.

Here’s how to check the format of the destination drive:

  1. Launch File Explorer and go to This PC.
  2. Right-click on the targeted drive and choose Properties from the context menu.
  3. In the next dialog, navigate to the General tab and check the format against the file system.


3. Disable Windows Search Service

This method may seem irrelevant, but there have been cases where users were able to fix the problem by simply disabling the Windows Search service. According to our research, the process of this service sometimes overlaps with the transfer process, resulting in a crash.

The solution, in this case, is simple, because all you have to do is temporarily disable the Windows Search service. Once you are able to transfer files over the network successfully, you can re-enable it.

Follow these steps to continue:

  1. Open the Run window by pressing To win + R.
  2. Type services.msc in the text field and click OKAY.
  3. In the Services window, right-click on Windows Search and choose Properties.
  4. Expand the drop-down menu for Startup type and choose disabled.
  5. Click on Apply > OKAY to save changes.


You can now transfer the required files again and see if disabling the Windows Search service made any difference.

4. Edit Windows Registry

Another fix that worked for users was renaming a specific key in the registry editor. This fix has proven to be effective for Windows 8 and Windows 10 users, so we recommend giving it a try if you are comfortable working with the Windows Registry.

If you are going to continue with this method, it is important that you create a registry backup. This will help you get back to the current working state of the registry if something goes wrong. While you’re at it, you can also enable automatic registry backups to save time when a scenario like this reoccurs in the future.

Once you have created a backup, follow these steps:

  1. Hurry To win + R together to open Run.
  2. Type regedit in the text field and press Walk in.
  3. In Registry Editor, navigate to the location mentioned below:
    ComputerHKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionWINEVTChannelsMicrosoft-Windows-DXP/Analytic
  4. Right click on Microsoft-Windows-DXP/Analytics and choose Rename from the context menu.
  5. Rename this key to Microsoft-Windows-DXP/Analytics.
  6. Quit Registry Editor and restart your computer.


On reboot, check if you can now transfer the files without any problem.

5. Perform a System Restore

Windows occasionally creates system restore points (usually before performing critical operations), which are essentially snapshots of your system’s operating states. These restore points are useful when you encounter a problem within the system and want to return to an earlier time when the system was working perfectly fine.

You can try to restore your system to a previous working state if you have come this far without finding a solution. However, it is important to keep in mind that restoring the system to a previous point will cause you to lose any changes you made after the restore point was created. This may include changing system settings, installing new apps, etc.

Unexpected network error, now resolved

Network errors can be frustrating because the error codes don’t give much information about what could be causing the problem. Hope the above mentioned methods will help you to get rid of the error permanently. To avoid such issues in the future, we strongly recommend that you keep your network drivers up to date at all times.


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