Turn On Windows Defender

In Windows 7 and 8, open Windows Defender, head to Options Administrator, and turn off the “Use this program” option. Windows Defender is a. Windows Defender - Turning Off & On. Having issues profiling a monitor on the Windows Vista or Windows 7 operating systems can sometimes be affected.

Most of the time, you'll notice Defender only when it has acted against a potential threat. The Anniversary Update for Windows 10, however, added 'enhanced notifications,' which provide periodic status updates. These updates appear in the Action Center, don't require any further action, and can be disabled if you prefer. The update also allows you to run Defender at the same time as a third-party antivirus solution in Defender's 'limited periodic scanning' mode, which acts as a low-impact backstop for added security. Defender is a free, basic, real-time security solution that's capable enough for the average user who sticks to mainstream sites, but it's not considered the absolute best option for PC security. Compared to third-party security suites in independent tests, Defender typically performs toward the middle or bottom of the pack.

On the other hand, Defender's simplistic approach makes it a nice alternative to these security suites, which come with an increasing number of confusing features and tend to bug you regularly to run a scan, read a weekly security report, consider an upgrade, or go through a security check. Windows Defender, by comparison, needs only to be activated to provide adequate protection for your PC.

Quick Navigation:.Windows Defender Will Not Turn on Windows 10/8/7(also called Windows Defender Security Center in Windows 10 1703 or later), a fully integrated part of Windows, is an antivirus program. It can offer real-time protection from various threats like spyware, malware, and viruses to your PC. Once it scans and finds potential threats, this program will stop them.However, many users have reported that their Windows Defender can't be turned on for virus defense in Windows 10/8/7 when they click on the Turn on button.One Windows 10 user from tomsguide said: 'A few days back I turned it off completely using group edit policy, but now when I try to put on the real-time protection slider, it asks for permission but then nothing happens.'

TomsguideIn addition to the case when Windows Defender could be turned off by group policy, some users said Windows Defender gets an unexpected error and cannot be opened or Windows Defender can't open after uninstalling Avast, Bitdefender, McAfee, AVG.To put it simply, this issue is possibly caused by the installation of third-party antivirus software, a corrupted registry, software conflicts, and so on. For Windows 7, Windows 8 and Windows 10 users, it is fairly common.Well then, what to do if you are troubled by Windows Defender not working? How to turn on Windows Defender in Windows 8/10/7 successfully? Take it easy! Get the full solutions from the following part to help you out.Further tip: If your Windows Defender can work normally, but you have a need to disable it, you can watch the following video.How to Repair Windows Defender Windows 10/8/7 Method 1: Uninstall Third-party Antivirus SoftwareIf you have installed any third-party software on your computer, Windows operating system will automatically detect it and turn itself down.

Thus, the first thing you can try is to disable your other security programs. If that is not working, the best way is to completely remove them.

Tip: Sometimes, SFC scan will fail to work with an error message. Fortunately, you can find solutions from this post -.In order to fix the issue of Windows Defender Antivirus not turning on, you can try using DISM scan instead. To do that, follow the guide:Step 1: Run Command Prompt as administrator.Step 2: In the pop-up window, enter DISM /Online /Cleanup-Image /RestoreHealth and hit Enter to execute this command line. Similarly, this scan will take some time, just wait and don't interrupt it.Method 4: Install the Latest UpdateAn outdated Windows operating system may cause the issue of Windows Defender not turning on. Some users reported that they had been able to fix the issue simply by installing the latest Windows update - latest signature updates are necessary for Windows Defender to keep your PC secure. Back up Files or Windows OS before an UpdateTo back up crucial files, you can choose the professional /8/7, MiniTool ShadowMaker since it allows you to back up files into an image and sync files or folders to other safe locations.

Now, get MiniTool ShadowMaker Trial Edition on your computer and then install it for file backup.Step 1: Run MiniTool ShadowMaker Trial, then click Keep Trial and the Connect button in the This Computer section.Step 2: In the Backup page, go to Source Folders and Files to choose important files that you want to back up.Then go to Destination to choose the place where you need to save the backup. Here an external hard drive, USB drive, NAS, etc. Can be available.Step 3: After finishing all the selections, click Back up Now button to start the backup operation.In addition, you can take full advantage of the Sync feature to synchronize your important files. This tutorial - shows you detailed operating steps.Upgrade Windows OSNow, it is time for you to install the latest Windows operating system. How to perform a Windows update?

Here is the guide:Step 1: In Windows 7, go to Control Panel and click Windows Update. In Windows 8, go to Control Panel System and Security Windows Update.

In Windows 10, navigate to Settings Update & security to enter the Windows Update interface.Step 2: Click Check for updates. If there are available updates, install them and restart your PC.After completing Windows updates, the problem of Windows Defender not turning on maybe disappeared. Tip: Windows failed to check for updates? Read this article to look for solutions. Method 5: Change Your Group PolicySometimes, Windows Defender won't turn on in Windows 10/8/7 because it is turned off by your group policy. Note: We strongly recommend you to before modifying it to avoid system accidents.Step 1: Input regedit in the text box of the Run window.Step 2: In the Registry Editor interface, go toHKEYLOCALMACHINESOFTWAREPoliciesMicrosoftWindows DefenderStep 3: Find DisableAntiSpyware key. If this key is not listed, please right-click the blank, choose New and DWORD (32-bit) Value to create it.Step 4: Right-click on it and set its Value data to 0.After you have changed Windows Defender using Registry Editor, you can check if Windows Defender Antivirus not turning on is solved.

Method 7: Perform a Clean BootIf you start the Windows system in normal start-up operation, there might be many third-party applications running in the background. These applications can cause software conflicts and interfere with Windows. As a result, you can't turn on Windows Defender in Windows 10/8/7.To repair Windows Defender issue, you can perform a clean boot. This method is quite simple and you can do by following these instructions:Step 1: Launch the Run window, and enter msconfig in the textbox.Step 2: In the System Configuration interface, go to the General tab, choose Selective startup and uncheck Load startup items.Step 3: Under the Services tab, tick Hide all Microsoft services and click Disable all.Step 4: Click the OK and Restart button to reboot your PC. Note: After finishing your troubleshooting, go to System Configuration General to change the startup setting to Normal startup. And enter the Services tab to enable all Microsoft services.Now, all of the possible ways to fix Windows Defender not turning on have been shown to you. Just try them one by one to repair Windows Defender in Windows 10/8/7.

If you think these ways are helpful, you can also share them on Twitter to let more people know.Use MiniTool ShadowMaker to Protect Your PC from Viruses and Other ThreatsIn order to protect your computer against spyware, ransomware, adware, viruses and other threats, you can try another way that is to use MiniTool ShadowMaker to back up your computer.MiniTool ShadowMaker, one of the best backup software for Windows 10/8/7 users, is really worth recommending. In addition to backing up your important files (as mentioned above), it can help you easily and effectively back up your Windows operating system, disk, and partition. If your system ever goes wrong, you can use the backup to restore it to a normal state.Additionally, it supports disk cloning, which helps you transfer all the content on a disk to another for the entire disk data backup. Lego rock band ps3 song list 2016.

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For system disk cloning, the cloned drive can be used to boot the PC in case of a system crash.Are you interested in this backup software? Now get MiniTool ShadowMaker Trial Edition (30 days trial) from the following button.Step 1: Run this free backup software, continue to use the Trial Edition and choose the local backup mode.Step 2: After entering the Backup page, you can see this program will back up your Windows system by default since the system partitions and destination path are chosen.

Of course, you can click the Source and Destination module to decide what you want to back up and where you need to save the image.Next, just click Back up Now button to execute the operation in Manage page. Tip: In order to protect your PC well, you can take full advantage of its Schedule option to or the Windows OS.In addition, you can choose the entire system disk to create a hard drive image. Or go to Tools page to use its Clone Disk feature to perform a disk cloning for backup.Related article: Bottom LineCan't turn on Windows Defender Windows 10/8/7? How to turn on Windows Defender in Windows 10/8/7? We have shown you solutions to fix the issue of Windows Defender not turning on; just try them one by one.To keep your PC safe, you should use the professional and reliable PC backup software, MiniTool ShadowMaker to back up the important files or Windows system automatically.If you have any other solution to repair Windows Defender or any question related to MiniTool software, please contact us via or leave your idea in the comment part below. Windows Defender Not Turning on FAQ.