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How to fix error 0x8007003b?

VPN connections are great. They let you securely access the internet without having to reveal your IP address and give away sensitive information. However, they’re not always easy to use.

In this article, we’re looking at error code 0x8007003b, which occurs when copying files over a VPN network and giving you eight fixes for the problem.

Also read: Windows error 0x80248007: 4 Fixes


Check the hard drive format

First up, check the destination hard drive format to see if it’s under the file size that you’re transferring. Remember that for files smaller than 4GB, the FAT32 file system will work fine. Otherwise, you’ll have to reformat the drive to the NTFS format before proceeding. 


Scan for malware

Here’s how you can run a full scan on your PC using Windows Security.

Step 1: Press the Windows key and search for Windows Security. Click the corresponding search result. 

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Step 2: Click Virus & threat protection. 

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Step 3: Click Scan options. 

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Step 4: Select Full scan and click Scan now to start scanning your PC for malware. 

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Alternatively, you can also scan your PC for malware using antimalware software such as MalwareBytes, which works on both Windows and macOS. 


Temporarily disable antivirus

On the contrary, overly aggressive third-party antivirus or antimalware programs can sometimes cause problems copying files over a protected network. In such cases, try temporarily disabling your antivirus to see if that makes a change. 

Check out our detailed guide on how to disable antivirus in Windows here.

Disable the firewall

As an extension to the previous solution, an overly aggressive firewall can sometimes block programs from communicating over a network. Try disabling your firewall and copying your files to see if that helps. 

Check out our detailed guide on how to disable the firewall in Windows here.

Disabling the Windows Search Service

Weirdly enough, disabling the Windows Search Service is also known to resolve the error. Here’s how.

Step 1: Press Windows Key + R to open the Run prompt. Type services.msc and hit enter.

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Step 2: Find the Windows Search service. Right-click it and select Stop. 

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Now try copying your files again. 

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Run an SFC scan

Corrupt files are the number one reason your PC might behave weirdly. Here’s how you can get rid of them and potentially resolve your issue. 

Step 1: Press Windows Key + S to open the Cortana/Search box and search for Powershell. Open Windows Powershell from the search results.

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Step 2: Type sfc /scannow to scan your system for issues. 

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Step 3: If the SFC scan finds any problems, use the following command to resolve them. 

DISM /Online /Cleanup-Image /RestoreHealth
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Restart your PC, and the error should be gone. 


Enable Guest access from Powershell

Another possible solution is enabling guest access to your Windows installation using Powershell. Here’s how.

Step 1: Press the Windows key and search for Powershell. Click the corresponding search result but make sure you’re opening Powershell with admin privileges.

How to fix error 0x8007003b?

Step 2: Enter the following command and hit enter.

REG ADD HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters /f /v AllowInsecureGuestAuth /t REG_SZ /d 1
How to fix error 0x8007003b?

Restart your computer and try again. 


Run system restore

Lastly, if nothing else works, try restoring your system to a previous point where it was functioning properly. 

Step 1: Press the Windows key and search for Reset this PC. Then, launch the Recovery setting from the search results. 

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Step 2: Click on Open System Restore. 

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Step 3: Select the recommended restore point and click the Next button to proceed. 

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Also read: Windows error 0xc1900106: 7 Fixes

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