Now, it is time for you to install the latest Windows operating system. How to perform a Windows update? Here is the guide:. 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.
This can be a problem but you are able to fix it simply by changing the group policy. After these changes are brought into effect, the issue of Windows Defender not working due to the group policy being turned off should be solved, and you can run it to protect your PC. Then, you can change it to fix this issue. Step 3: Find DisableAntiSpyware key.
If 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. This method is quite simple and you can do by following these instructions:. Step 2: In the System Configuration interface, go to the General tab, choose Selective startup and uncheck Load startup items. Now, all of the possible ways to fix Windows Defender not turning on have been shown to you.
If you think these ways are helpful, you can also share them on Twitter to let more people know. Click to tweet. In 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. 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.
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? 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. 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. 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 [email protected] or leave your idea in the comment part below. Download Shadowmaker. Summary : Is your Windows Defender not turning on? Tip: Sometimes, SFC scan will fail to work with an error message. Note: Installing Windows update may give rise to data loss, thus, you had better back up your important files before an update so that you can restore the computer to a previous state in case of accidents.
Read More. Tip: Windows failed to check for updates? Note: We strongly recommend you to back up Windows registry before modifying it to avoid system accidents. And enter the Services tab to enable all Microsoft services. Tip: In order to protect your PC well, you can take full advantage of its Schedule option to automatically back up your files or the Windows OS. What to do if Windows Defender is not working? Why my Windows Defender is not updating? The causes for Windows Defender not updating are various, such as connectivity problems, Windows Defender services not running, corrupted system files, a Windows update problem, etc.
The solutions should depend on the error message that you have received. Complete the following steps to turn on real-time and cloud-delivered protection.
Together, these antivirus features protect you against spyware and can deliver fixes for malware issues via the cloud. If you don't see these options on your screen, they may be hidden. Complete the following steps to make them visible.
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