Windows 10: Unable to Update Windows Defender

virus and spyware definitions cannot be updated


[Original Title: windows defender]

:)

 

Windows Defender disabled and is unable to start


OK. I am not sure if you can complete the steps below.......................
In the search box, type services.msc > Enter
Items in the Services box are listed alphabetically.
Scroll down to Windows Defender Service...........................
at Status heading, it should be.................................... Running
at Startup type, it should be......................................... Automatic







If that is not what yours said, right click at Windows Defender Service > click Properties >
can you change the Startup type to Automatic and Service status to Start ?
If yes, do so and click OK when done.

 

Unable to turn off Windows Defender

Hello,

Thank you for posting your query on Microsoft Community.

As per description, you are unable to turn off windows defender.

I suggest you try restarting Windows Defender service and check if issue is resolved. To do so kindly follow the below given steps:

• Press Windows key + X key and type services.msc,
  hit enter.
• Search Windows Defender Service.:1) Windows Defender Service ; 2)
  Windows Defender Network.
• Right click on each and press Start.
• Restart your computer and check if issue persist.

Hope this information is helpful. Please do let us know if you need further assistance with Windows, we’ll be glad to assist you.

 

Windows Defender unable to download updates

Hello Daniels,

Thank you for posting your concern in Microsoft community and welcome to the Windows 10 family.

To be able to assist you better, I would like to know a few more details on the below questions.

1. Is the status of the Windows Defender active?

2. Did you check if there was any recent update already installed for Windows Defender?

Now, refer to the below suggested steps and check if it helps to resolve the issue.

A. Check whether the Windows date and Time set to Automatic and synced.

B. Disconnect all the peripheral devices except for the mouse and keyboard.

C. Update all your computer's drivers from manufacturer’s website.

D. Follow these steps to run the Windows inbuilt troubleshooter:

• Write Troubleshooting in the search box and hit enter.

• Click on Troubleshooting tab.
  

• Click on view all option on the upper left corner.
  

• Select the Windows Update option from the list.
  

• Click Next to run theTroubleshooter.

E. Try to use the Windows Update troubleshooter and see if it helps.

Link http://windows.microsoft.com/en-us/windows/troubleshoot-problems-installing-updates#1TC=windows-8

(Also applies to Windows 10)

Write to us with the updated information. If you need further assistance, we would be happy to help you.

Thank You.