Step 3: Input the command sfc /scannow and press Enter to execute it. Step 2: Right-click Command Prompt from the search result and choose Run as administrator. Step 1: Type cmd in the search box of Cortana and press Enter. In this case, you can simply run the System File Checker which replaces the corrupted system files with the cached copies. If certain system files are corrupted, you might also fail to transfer large files and receive the error code 0x8007003B. Step 4: Click Apply and OK to confirm the new settings. Step 3: Under General tab, choose Disabled from the drop-down menu of Startup type. Step 2: Locate Windows Search service and double-click it to open its Properties. Step 1: Input services.msc in the Run dialog and press Enter key to open Services app. This solution seems to have nothing to do with the network error in our case, but it is a fact that some users have resolved the issue by disabling Windows Search service. Click OK button to save the change.Īfter that, reboot your computer and check if the network error 0x8007003B has been fixed. Step 4: In the pop-up window, check Turn off Windows Defender Firewall for both private and public network settings. Step 3: Choose Turn Windows Defender Firewall on or off in the left pane. Step 2: Go ahead to System and Security > Windows Defender Firewall. Step 1: Press Windows + R to open Run window, input control panel and press Enter. You can go to disable the firewall to fix the issue. So, it should not be surprised that the firewall can interfere with file transferring via VPN connection. Fix 3: Turn Off Windows Firewallįor most network issues including the error code 0x8007003B, the main cause might be the Windows firewall which blocks certain network it thinks not safe. If this method doesn’t work, you can turn your antivirus on and try next solution. Keep your antivirus disabled for about 30 minutes and then try transferring the file again. Then, toggle off the button of Real-time protection. Just go to Windows Defender Security Center and choose Virus & threat protection settings. So, you can try disabling your antivirus temporarily to fix the error 0x8007003B.īesides, you should also make sure the Windows Defender is turned off. Sometimes, certain antivirus program might interfere with the normal working of your computer. If no virus or malware is detected, perhaps your antivirus program is the culprit. Fix 2: Temporarily Disable Your Antivirus If the unexpected network error still appears, you can continue with the next method. Step 5: Choose Full scan and click Scan now button.Īfter the scanning, restart your computer and try transferring your file again. Step 4: In the pop-up Windows Defender Security Center window, click Run a new advanced scan. Step 3: Click Virus & threat protection in the right pane. Step 2: Go to Update & Security > Windows Security. Step 1: Right-click the Start button and choose Settings from the menu to open it. Otherwise, the built-in tool Windows Defender is also a great choice, and here’s how to use it. You can use your preferred third-party antivirus program. You can feel free to try them one by one, as they have been proven to be effective by other users.Īt first, you should perform a full scan for your computer to make sure it is free from virus and malware. You can learn about more details about the reasons for this error in the following contents as well as some methods to fix it. Of course, here are some other potential factors, such as virus or malware infection, interference from antivirus programs, and etc. The main reason of this error is the unstable server or mismatch of configuration. The Error 0x8007003B: An unexpected network error occurred. If you continue to receive this error, you can use the error code to search for help with this problem. When you get this error, the process of transferring file will be interrupted and a pop-up windows will appear with the error message as follows:Īn unexpected error is keeping you from copying the file. According to the reports, this error might occur in Windows 8 and Windows 10 and it normally comes up when you are trying to transfer files over 100 MB to another computer via the VPN connection. The network error 0x8007003B has been reported by plenty of Windows users. Fix 2: Temporarily Disable Your Antivirus.In this post, I will display some easy and effective solutions from MiniTool, together with the detailed steps. Are you experiencing error code 0x8007003B while transferring large files to another desktop or laptop via a VPN connection? Don’t worry.
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