How to Fix "This App Has Been Blocked for Your Protection" Error on Windows

If Windows is being a little overprotective, unlock your ứng dụng with these tips.

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While Windows is designed đồ sộ keep your computer secure, sometimes it can be overly zealous in its protection and block an ứng dụng you know is safe. If you’re seeing the “This ứng dụng has been blocked for your protection” error on Windows, your system has restricted the application from running for security reasons. This article clarifies the reasons behind the problem and guides you toward resolving it.

1. Restart Your Computer

When you experience the “This ứng dụng has been blocked for your protection” error, the first step is đồ sộ restart your computer. A simple reboot can often tự the trick and allow you lập cập a previously blocked application.

If you don’t experience the error after rebooting, then it is likely a temporary glitch on Windows.

2. Scan for Malicious Programs

If restarting your computer doesn’t work, the next step is đồ sộ lập cập a full antivirus scan on your system. Chances are that the application is blocked due đồ sộ a virus, malware or another malicious program.

To be sure it's not the case, kiểm tra whether a tệp tin is infected with a virus. If you find one, scan your computer for viruses and remove them.

If you prefer command line tools, you can scan and remove malicious components using Windows PowerShell. You should also use a reputable anti-spyware program đồ sộ kiểm tra for malicious programs that could be causing the error.

3. Run the Program as an Administrator

Some programs require administrator privileges đồ sộ function properly. If you try đồ sộ launch them without elevated access, Windows will block their execution and display the error message. In such a case, you can right-click on the app’s shortcut or the executable tệp tin and select Run as administrator.

If it runs successfully, you can adjust the ứng dụng properties đồ sộ always lập cập as an administrator. Don't forget đồ sộ save the changes.

4. Disable the SmartScreen Filter

SmartScreen is a security feature that protects your computer from unknown and potentially malicious applications. If it’s enabled, SmartScreen may block an application from running. To disable the feature, follow these steps.

Open the Start menu and tìm kiếm for Windows Security.
Click on Windows Security in the tìm kiếm results.
In the Windows Security ứng dụng, select App & browser control.
On the right side of the window, click Reputation-based protection settings.
Toggle off Potentially unwanted ứng dụng blocking and SmartScreen for Microsoft Store apps.

This will stop the system from blocking apps, but you should be careful with any programs you tải về. Once you tự it, close the Windows Security ứng dụng and try running the application again.

5. Modify the Group Policy Settings

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The group policy editor allows you đồ sộ adjust security settings on Windows and control which applications are blocked. If the other steps didn’t work, you can try đồ sộ modify the group policy settings and unblock the application that triggered the error. Here's how đồ sộ tự it:

Press Win + X on your keyboard and select Run from the thực đơn list.
Type gpedit.msc and press Enter đồ sộ open the Local Group Policy Editor.
Once you're in the Local Group Policy Editor window, navigate đồ sộ the following:
Local Computer Policy > Computer Configuration > Windows Settings > Security Settings > Local Policies > Security Options.
From the list of settings, double-click on User Account Control: Run all administrators in Admin Approval Mode and mix it đồ sộ Disabled.
After making the changes, click Apply > OK and restart your computer đồ sộ apply it.

Keep in mind that modifying group policy settings can leave your computer vulnerable đồ sộ malicious applications. Therefore, you should only tự it as a last resort and revert the change as soon as you’re done.

6. Tweak the Registry Editor

If you're running Windows trang chủ edition, you can tweak the Registry Editor đồ sộ adjust the User Account Control settings and unblock the application. Here's what you need đồ sộ do:

Open the Run dialog box.
Type regedit and press Enter đồ sộ open the Registry Editor window.
If UAC prompts you for permission, click Yes.
Navigate đồ sộ the following key location.
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
In the right pane, double-click on EnableLUA and mix its value đồ sộ 0 (zero).
Click OK to save the changes.

After making the changes, close the Registry Editor and restart your computer.

7. Reset Windows Update Components

If the issue persists, you can reset the Windows Update components, which means restarting certain services that manage the update process and enable you đồ sộ launch the application.

To reset Windows Update components, tự the following:

Click on Start and tìm kiếm for Notepad.
Right-click on the Notepad icon and select Run as administrator.
Copy and paste the following code into Notepad:
<code>net stop bits net stop wuauserv net stop appidsvc net stop cryptsvc Del "%ALLUSERSPROFILE%\Application Data\Microsoft\Network\Downloader\*.*" rmdir %systemroot%\SoftwareDistribution /S /Q rmdir %systemroot% system32\catroot2 /S /Q sc.exe sdset bits D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU) sc.exe sdset wuauserv D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU) cd /d %windir% system32 regsvr32.exe /s atl.dll regsvr32.exe /s urlmon.dll regsvr32.exe /s mshtml.dll regsvr32.exe /s shdocvw.dll regsvr32.exe /s browseui.dll regsvr32.exe /s jscript.dll regsvr32.exe /s vbscript.dll regsvr32.exe /s scrrun.dll regsvr32.exe /s msxml.dll regsvr32.exe /s msxml3.dll regsvr32.exe /s msxml6.dll regsvr32.exe /s actxprxy.dll regsvr32.exe /s softpub.dll regsvr32.exe /s wintrust.dll regsvr32.exe /s dssenh.dll regsvr32.exe /s rsaenh.dll regsvr32.exe /s gpkcsp.dll regsvr32.exe /s sccbase.dll regsvr32.exe /s slbcsp.dll regsvr32.exe /s cryptdlg.dll regsvr32.exe /s oleaut32.dll regsvr32.exe /s ole32.dll regsvr32.exe /s shell32.dll regsvr32.exe /s initpki.dll regsvr32.exe /s wuapi.dll regsvr32.exe /s wuaueng.dll regsvr32.exe /s wuaueng1.dll regsvr32.exe /s wucltui.dll regsvr32.exe /s wups.dll regsvr32.exe /s wups2.dll regsvr32.exe /s wuweb.dll regsvr32.exe /s qmgr.dll regsvr32.exe /s qmgrprxy.dll regsvr32.exe /s wucltux.dll regsvr32.exe /s muweb.dll regsvr32.exe /s wuwebv.dll netsh winsock reset netsh winsock reset proxy net start bits net start wuauserv net start appidsvc net start cryptsvc
Now click File in the top left corner.
Then select Save as from the options list.
In the Save as window, name your script Reset.bat and mix the Save as type đồ sộ All Files.
Select Desktop from the left thực đơn and click Save.
Double-click on the Reset.bat tệp tin đồ sộ lập cập it as an administrator.
If the UAC window pops up on the screen, click Yes to continue.

Wait for the process đồ sộ finish and restart your computer. After the reboot, try running the blocked ứng dụng again. It should now work without issues.

Get Access đồ sộ Your Apps and Files on Windows

Windows is known for its tight security which prevents malicious applications from launching and infecting your PC. However, sometimes even legitimate programs are blocked by the operating system and leave an error message saying “This ứng dụng has been blocked for your protection.”

There are several reasons why this error occurs. It includes outdated security software, the firewall interfering with the program, or the application not trusted by Windows. Read this guide đồ sộ learn more about this error.

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