Windows 10: Windows Defender would get stuck at opening screen

I just upgraded from win 10 to 11. Then I tried opening Windows Defender but it got stuck at the opening screen them gave the error "windowsdefender://None" I looked to multiple posts ran powershell commands, downloaded and installed "Microsoft.SecHealthUI_8wekyb3d8bbwe.appx" but none work.

:)

 

stuck at installing update [Definition Update for Windows Defender - KB2267602 (Definition 1.213.1075.0).]

Hello,

Thank you for posting the query on Microsoft Community. I am glad to assist you on this.

Try to update Windows Defender manually and check.

Here are the steps:

• 
  Press Windows key, type Windows Defender
  and hit Enter.
  
• 
  Click on Update and try to update from there.
  

If this doesn't help, I would suggest you to follow the suggestions provided by
Ronnie Vernon on November 3, 2015 and see if it helps in resolving the issue.

Redirecting

Hope this helps. Please do let us know if you need any further assistance.

Thank You.

 

Installing Apps on Windows 10 Has Windows Defender Finding Malware

Hi Tommy,

Welcome to the Microsoft Community.

• 
  Is this issue specific to third party apps?
  

I would suggest you to open Windows defender and add exclusions and check if it helps. Follow the steps to add exclusions in windows Defender.

• 
  Type Windows defender settings in the search bar and press enter
  
• 
  Under Exclusions click on Add Exclusion
  

Hope this information helps. Reply to the post with an updated status of the issue so that we can assist you further.

 

Windows Defender update stuck on "0% Downloading"

Good Morning

For the last 3 weeks I for some reason can't update windows Defender. It's stuck on downloading.

Definition Update for Windows Defender Antivirus - KB2267602 (Definition 1.275.1086.0)

Status: Downloading - 0%

Definition Update for Windows Defender Antivirus - KB2267602 (Definition 1.259.652.0)

Status: Downloading - 0%

Once the update doesn't work I get the following error message:

Code:

[b]Error 0x80070003 while downloading update for Windows Defender.
[/b]

I've tried everything also methods below:

Method 1:

I suggest you to run the Windows Update troubleshooter and check if it helps.

• Press Windows key, type troubleshooter in the search box and then press enter.
• Select Troubleshooting. Click on
  view all and select Windows Update troubleshooter and follow the on-screen instructions.

Try below given method if issue persist.

Method 2:

If issue persist I suggest you to reset Windows Update component. Kindly follow the below given steps.

• Press Windows key + X, select Command prompt (Admin) to bring up elevated Command prompt.
• Stop the BITS service, the Windows Update service, and the Cryptographic service. To do this, at a command prompt, type the following commands. Make sure that you press Enter after you type each command.
  
  • net stop bits
  • net stop wuauserv
  • net stop appidsvc
  • net stop cryptsvc
• Rename the softare distribution folders backup copies. To do this, at a command prompt, type the following commands. Make sure that you press Enter after you type each command.
  • Ren %systemroot%\SoftwareDistribution SoftwareDistribution.bak
  • Ren %systemroot%\system32\catroot2 catroot2.bak
• Restart the BITS service, the Windows Update service, and the Cryptographic service. To do this, at a command prompt, type the following commands. Make sure that you press Enter after you type each command.
  • net start bits
  • net start wuauserv
  • net start appidsvc
  • net start cryptsvc
• Restart your PC and check if it works.

Method 3:

The system file may have got corrupted due to corruption in system file. I suggest you to try the following steps:

• Open command prompt by pressing Windows key + X and selecting “Command prompt admin”.
• In command prompt, type the following commands and press Enter after each command:

DISM.exe /Online /Cleanup-image /Scanhealth

DISM.exe /Online /Cleanup-image /Restorehealth

• Close the command prompt and restart the PC and check if it works.