Question
Issue: How to fix “You’ll need a new app to open this windowsdefender” error in Windows?
Hello. When I try opening the Windows Defender app I receive this message – “You'll need a new app to open this windowsdefender.” How can I fix this?
Solved Answer
Windows Defender is an important part of the operating system. It protects users against Trojans, ransomware, and other types of malware[1] infections. Windows users can feel safer with this built-in application when it comes to cybersecurity threats. Besides the virus detection, it has a lot of other functions, like:
- Real-time threat detection
- Firewall & network protection
- Protection against phishing sites
- System performance reports
- Hardware security
- Parental controls
Windows Defender covers a lot of aspects from Internet safety to hardware. Parents can also use it to limit their children's activities while they are using the machine. It is considered to be a fairly good option for everyday users that want to protect their privacy and security. Nowadays, cyber threats are constantly on the rise, and it is great that Windows users can ensure their device's security for free.
However, some people have been experiencing issues with the app. More specifically, certain users receive a message “You'll need a new app to open this windowsdefender” when they try to open the security app. This has left many people feeling uneasy and unprotected. It is unknown what exactly causes this prompt to show up but users found that executing certain Powershell commands has helped.
You can also use a repair tool like FortectMac Washing Machine X9 that can fix various system errors, BSoDs,[2] corrupted files, and registry[3] issues. This powerful software helps to maintain a healthy system and keep it running smoothly. Otherwise, if you are ready to begin the guide that could help you fix the “You'll need a new app to open this windowsdefender” error, follow the steps below very carefully.
Method 1. Run a Powershell Command
- Open and Run Windows PowerShell as Administrator
- Copy and paste the command below and press Enter
Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage
- Restart your computer and check if the issue persists
- If that did not work, open PowerShell as Administrator again and run this command:
Windows 11: Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\\AppXManifest.xml”}
Windows 10: Add-AppxPackage -Register -DisableDevelopmentMode “C:\\Windows\\SystemApps\\Microsoft.Windows.SecHealthUI_cw5n1h2txyewy\\AppXManifest.xml”
- Restart your PC
Method 2. Reset Windows
- Go to Settings, and choose System
- Go to the Recovery tab and click Reset PC
- Follow the on-screen instructions to finish the process
You might also be interested in these topics:
- Windows Defender error 0x80073b01
- Windows Defender error code 0x800106ba
- Windows Defender Error Code 0x8050800c
- Windows Defender identifies the same threat repeatedly
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ugetfix.com team is trying to do its best to help users find the best solutions for eliminating their errors. If you don't want to struggle with manual repair techniques, please use the automatic software. All recommended products have been tested and approved by our professionals. Tools that you can use to fix your error are listed bellow:
Protect your online privacy with a VPN client
A VPN is crucial when it comes to user privacy. Online trackers such as cookies can not only be used by social media platforms and other websites but also your Internet Service Provider and the government. Even if you apply the most secure settings via your web browser, you can still be tracked via apps that are connected to the internet. Besides, privacy-focused browsers like Tor is are not an optimal choice due to diminished connection speeds. The best solution for your ultimate privacy is Private Internet Access – be anonymous and secure online.
Data recovery tools can prevent permanent file loss
Data recovery software is one of the options that could help you recover your files. Once you delete a file, it does not vanish into thin air – it remains on your system as long as no new data is written on top of it. Data Recovery Pro is recovery software that searchers for working copies of deleted files within your hard drive. By using the tool, you can prevent loss of valuable documents, school work, personal pictures, and other crucial files.
Ugnius Kiguolis is the founder and editor-in-chief of UGetFix. He is a professional security specialist and malware analyst who has been working in IT industry for over 20 years.
- ^ Malware. Wikipedia, the free encyclopedia.
- ^ Chris Hoffman. Everything You Need To Know About the Blue Screen of Death. HowToGeek. Tech Insight Magazine.
- ^ Tim Fisher. What Is the Windows Registry?. Lifewire. Software and Apps.
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