This post mainly introduces how to download Windows Defender on Windows 10/11 computer.
3 ways are offered to let you get the Microsoft Defender app.
Also read:Learn the best tips and tricks fordata recovery hard driveon Windows 11/10/8/7.
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It is included in Windows 11/10/8/8.1/7/Vista.
Windows Defender offers 4 scan modes:full scan, quick scan, custom scan, and offline scan.
Check for more information about how tostay protected with Windows Security.
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Virus & threat protection in Windows Security helps you scan for threats on your Windows 10/11 computer.
Check the details in this post.
you’re free to also use this way toupdate Windows Defenderto the latest version on Windows 10/11.
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Manually Download and Install Windows Defender on Windows 10/11
Way 3.
Find Third-party Windows Defender Download Websites
You may also find some third-party reliable websites to get Microsoft Defender.
Get WinZip file archive and compression tool to zip or unzip files with ease.
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You may refer to this post:How to Uninstall, Restore, Reinstall Windows 10 Built-in Apps.
Check the guide for Google Docs app download for PC/Android/iPad/iPhone.
Also learn how to download documents from Google Docs on a computer or mobile.

Fix 1. cycle your box and attempt to open Windows Defender again.
Reset Windows Defender app.
Uninstall and reinstall Windows Defender.
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The instructions are introduced above.
Disable any third-party antivirus software on your setup since it may be conflicted with the Windows Defender antivirus program.
Use third-party antivirus software.

Fix 8.Start Windows in Safe Modeto see if Windows Defender can smoothly open and work.
Perform a System Restore.
MiniTool Power Data Recoveryis a top data recovery program that helps you recover data from various data loss situations.

MiniTool Partition Wizardis a popular free hard drive partition manager for Windows.
It lets you manage hard drives and partitions from all aspects.
This disk partition manager is extremely easy to use and fulfills all your hard disk management needs.
It is free and clean.
you might download and install MiniTool Partition Wizard on your Windows PC or laptop to test it now.
MiniTool ShadowMakeris one of the best free PC backup utilities that supports Windows system backup and file backup.
you’re free to even pick the whole disk content to back up.
Besides, it also offers another backup module: File Sync.
you’re free to easily sync data to the target equipment to make a backup.
Many other backup features are provided, e.g.
disk clone, automatic backup, incremental backup, etc.
Use this top free PC backup tool to keep your gear data safe.
Some tips to help you fix Windows Defender not working or cant open problem are also provided.