Sometimes, the popup is annoying.
So, how to disable Open File security warning will be talked about in this post onMiniToolwebsite.
Try these methods to get rid of this warning with ease.

When using a computer, you always need security measures to protect yourself.
Windows 7/8/10 has its own features to avoid security risks and threats.
But it is a bit annoying if such a warning pops up every now and then.
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you could choose to disable this security warning if you have installed a powerful antivirus program on your gear.
Now, lets focus on this topic -Open File security warning disable.
This way is simple and straightforward.

it’s possible for you to modify your Windows Registry to prevent this security message.
Note that changing Registry is dangerous so you shouldback up Registry keysin advance.
Step 2: Go toHKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies.
Step 3: Find theAssociationskey.
Step 4: Look forLowRiskFileTypes.
If it isnt available, right-nudge the empty space, and chooseNew > String Valueto create it.
Step 6: reboot your PC to check whether the Open File security warning is disabled.
But this tool is only available in Pro and Enterprise versions of Windows.
Want to upgrade Windows 1- Home to Pro to enjoy more features?
Here two simple methods for Windows 10 Pro upgrade are offered to you.
Step 1: Inputgpedit.mscin theRunwindow and clickOK.
Step 2: Go toUser Configuration > Administrative Templates > Windows Components > Attachment Manager.
Step 3: Locate theDo note preserve zone information in file attachmentsitem in the right pane and open it.
Step 4: Check theEnabledoption, clickApplyandOK.
Step 6: Save all the changes.
Step 1: Typeinetcpl.cplin the Run window to open Internet Properties.
Step 2: Under theSecuritytab and clickCustom Level.
Step 3: Go toLaunching applications and unsafe filesand checkEnable.
These four methods are common.
Try one of them to get rid of the security warning.