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Summary :

these files might be harmful to your computer

If you get the error “these files might be harmful to your computer” when transferring files from a network drive that is accessed by IP address to local drives, what should you do to get rid of the error message? Now, try these methods below which are offered by MiniTool Solution and you can effectively fix your problem.

Windows Security These Files Might Be Harmful Windows 10

In Windows 10, you can put your home and office PCs on network sharing resources between them. One common setting is to use the PC’s IP address to map a network drive to your PC. However, when you try to transfer files from the network location to the local drives, the warning message appears, saying:

“These files might be harmful to your computer. Your Internet security settings suggest that one or more files may be harmful. Do you want to use it anyway? ”

If you click OK, this can dismiss the warning and you can continue with the transfer. For occasional file transfer, this warning is not a major issue. However, it is really annoying if you often transfer files between your network drive and local PC since you have to turn off this warning every time.

So, what should you do to avoid the Windows Security warning? Two methods are here for you.

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Fixes for “Windows Security These Files Might Be Harmful”

The following solutions are for Windows 10, but they are also applied to Windows 7 and 8. If the warning message also happens on your Windows 7/8 PCs, try these methods.

Add Network Computers to Local Intranet Zone on Your Computer

Here are steps that you should follow:

Step 1: Go to the Internet Properties window.

  • Input Internet Options to the search box of Windows 10.
  • Or go to Control Panel > Network and Security > Internet Options.
  • Open Run, input cpl and click OK.

Step 2: Under the Security tab, click Local intranet and choose Sites to see the following figure. Make sure the option of Include all network paths (UNCs) is checked.

Local intranet

Step 3: Click the Advanced button and then you can add the IP address of the network computer. If you have multiple networked PCs, you can use wildcards (*) instead of entering all of their individual addresses manually, for example, 192.168.0.*. This can include all devices on the subnet ( –

Step 4: Click Add and OK.

After that, Windows will treat any added address as trusted local resources and won’t warn you “these files are might be harmful to your computer” when you transfer files from them.

Use the Local Group Policy Editor

To disable the error – opening these files might be harmful in Windows 10, you can also use the Local Group Policy Editor.

Tip: This method doesn’t work for Windows 10 Home. If you need to use this way, upgrade to the Pro Edition. This post - How to Upgrade Windows 10 Home to Pro without Losing Data Easily is helpful for you.

Step 1: Open this editor via Windows 10 search box.

Step 2: Go to User Configuration > Administrative Templates > Windows Components > Internet Explorer > Internet Control Panel > Security Page.

Step 3: Find Internet Zone Template, double-click it and choose Enabled.

local group policy editor

Step 4: Set Intranet to Low and save the change.

Step 5: Double-click Site to Zone Assignment List from the right panel, click Enabled > Show to the Show Contents window and type the share’s IP address or site name with which you get the warning.

Bottom Line

Are you encountering the error “these files might be harmful to your computer” when moving files in Windows 10? Now, two methods are for you and you should easily get rid of the warning.

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