How to Fix That Windows Defender Update Failed on Windows 10

Read this post fromMiniToolto get the methods.

This post provides some fixes for you.

How to Fix That Windows Defender Update Failed?

Step 2:Click theUpdate & Securitytab in the options interface.

Step 3:Then you should clickWindows Updatein the left pane.

Step 4:ClickCheck for updatesin the right pane.

your gear will now check for any and all available updates.

The available updates for Windows Defender will automatically start being downloaded as soon as they are detected.

Once the updates are downloaded, they will be installed successfully.

Then you’re able to see if the Windows Defender update failed issue still exists.

What is Windows Defender app Guard?

How to enable Windows Defender system Guard?

This post provides 5 ways for you.

Here is the tutorial.

Step 1:Inputcommand promptin theSearchmenu and clickCommand Prompt.

Step 2:Then clickRun as administratorto open an elevated Command Prompt.

Step 3:throw in the following command into the Command Prompt and press theEnterkey.

cd /d \Program Files\Windows Defender

Step 4:Then typeexe -signatureupdateinto the Command Prompt and press theEnterkey.

If yes, you might try the next solution.

Here is how to do this.

Step 1:Right-click theStartmenu and selectRun.

Step 2:Typeservices.mscin theRunbox and clickOKto openServices.

Step 3:FindWindows Defender Antivirus Serviceand right-click it, then you should clickProperties.

Step 4:You should verify thatService statusisRunning.

You may encounter the Waves MaxxAudio Service system high CPU issue.

This post provides some great solutions for the annoying issue.

Final Words

I think the issue must be fixed by the solutions above.

if you bump into such an issue, you just need to try the solutions one by one.

Then you’re able to find the appropriate one.