Lap bao lỗi windows 8 your pc has been unprotected
Antivirus applications are essential to staying safe when browsing the internet. Whether you’re connected to a public WiFi or your private network, you’re vulnerable to a variety of attacks. Some malware can even spread offline, only relying on file sharing. It’s a huge red flag if Windows 10’s built-in antivirus isn’t opening or won’t turn on at all. Show
Windows Defender comes pre-installed on all Windows 10 systems. It’s included to protect you from cyber threats like malware, hackers, and more. If you can’t open Windows Defender, or Windows Defender won’t launch at all, this article will help you fix the problem. Table of ContentsWhy Is Windows Defender Not Opening?There are many possible causes for Windows Defender not launching. For example, as with most other default apps on Windows 10, Defender may become corrupted over time. This happens because of Windows 10 updates or existing malware infections. The Windows Defender summary notification is one of the easiest ways to tell that your PC is protectedAnother common cause for Windows Defender not launching can be third-party antivirus. If you recently installed new antivirus software, such as Kaspersky or McAfee, it might interfere with the built-in antivirus. In this case, you usually have to make a decision about which security software you’ll be using. To sum it up, here are most of the common causes for Windows Defender not opening or being unable to launch:
Let’s see what you can do to fix these issues and restore Windows Defender. The instructions below were written using the latest version of Windows 10. How To Fix Windows Defender Won’t Open in Windows 10If you believe your built-in antivirus isn’t functioning as it should, check the guides below. We compiled 9 working methods for fixing any Defender-related problems on your device. Use the solutions below to fix the following errors:
Method 1. Turn On Real-Time ProtectionIt’s possible that Windows Defender real-time protection has been turned off on your device. This may make the software look like it’s not opening. It also turns off a huge chunk of Defender’s features, which is not recommended. Here are the steps to enable real-time protection on Windows 10.
Method 2. Temporarily Disable Your Third-Party AntivirusAntivirus applications are known to cause issues on computers by blocking apps and services from running properly. You can test if the antivirus program you’re using at the moment is causing the error by temporarily disabling it. Note: This method is not recommended as it is unsafe to use your computer without protection. Only proceed if you’re aware of the possible risks and have a backup of your system to revert any damage that may happen.
Method 3. Restore Corrupted System FilesCorrupted systems files can cause massive problems with your operating system. One of the leading causes for Windows Defender not opening is file corruption. You can identify and repair faulty system files through the SFC scan. The System File Checker (SFC) is a built-in tool to help to troubleshoot in Windows 10. It's able to automatically detect corrupted system files, and repair them to working order. You can use the SFC scan to potentially fix a variety of errors.
The SFC scan may take some time to run through your system and identify any missing or corrupted system files. Even if the scan fails to find anything, some users have reported that their PC's functionality improved after running it. Method 4. Use the DISM Command To Repair System ImagesThe DISM tool allows you to identify and fix corruption issues with your system by simply running commands in the Command Prompt application. It checks for corruption system-wide and automatically attempts to restore damaged or missing files.
Method 5. Restart the Security Center ServiceIn order for Windows Defender to run, you need to enable some services. There’s a possibility that necessary services have been stopped, causing Defender to not launch. Using the steps below, you can start these services and ensure they’re properly running in the future.
No luck? Don’t lose hope yet. We have some more things for you to try down below. Method 6. Enable Windows Defender in Group PolicyThere’s a possibility that Windows Defender is entirely turned off using the Group Policy. This could’ve been done by accident, or by another user on the computer. In rare cases, malware might be able to accomplish this as well. Luckily, turning Windows Defender back on is an easy task if you follow these steps.
Method 7. Turn On Windows Defender Using the Registry EditorWindows 10 Home users might not have access to the Group Policy mentioned above. In this case, try using the Registry Editor to enable Windows Defender. This method may also work if you’ve already tried the Group Policy solution, but didn’t restore the software yet.
Method 8. Correct the Time and Date on Your DeviceSome users have observed that having the incorrect time and date on Windows 10 may cause some wacky errors. Try fixing this when Windows Defender won’t turn on.
Method 9. Update Windows 10 to the latest versionIf none of the methods above seemed to work, try updating your device to the newest Windows 10 release. This can fix bugs, bring you new features, patch up security holes, and much more. Here’s how you can update Windows 10:
Final ThoughtsWe hope the steps above helped you fix the Windows Defender won’t turn on the issue. You can now enjoy the benefits of having a strong antivirus application on your computer. Browse with confidence knowing you’re protected both online and offline. Now, we’d like to turn it to you. Our Help Center offers hundreds of guides to assist you if you’re in need of further help. Return to us for more informative articles, or get in touch with our experts for immediate assistance. And, one more thing... Would you like to receive promotions, deals, and discounts to get our products for the best price? Subscribe to our newsletter by entering your email address below! |