Windows 10: Unable to start scan using Windows Defender, Error message: The service couldn’t be started

this happens when I click "start now" on windows defender

please look the screenshot below and help me








***Modified Title from: please help me***

:)

 

Unable to Re-Start Windows Defender Services


A little background first, I downloaded a file and started to install it when Defender caught the virus, but didn't contain it. So I downloaded Malwarebytes to scan and remove the virus.

After I loaded Malwarebytes I noticed I wasn't getting anymore Windows Defender definitions but I noticed the Windows Defender services were stopped and I figured Malwarebytes stopped it and that was the reason I wasn't getting anymore updates on Defender.

I uninstalled Malwarebytes but now I can't restart Windows Defender.

If I got to Control Panel then Security and Maintenance window. Both buttons to turn on Defender are grayed out.





If I search for Windows Defender in the search window on the task bar. This is the result I get.





And lastly, if I go into Task Manager Services, there are 2 entries for Windows Defender, both are stopped. If I try to restart them this is the message I get.





So is there anything I can do to restart the app or does it require more drastic steps such as reload 9926?

 

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.

 

Windows Defender Error 1058: can't start service

I've seen posts regarding similar behavior for Windows 7, but not for Windows 10. I've tried a few of the steps but some of them (like specific registry key updates) are not applicable, since the registry seems different than previous versions.

Symptoms

• Windows Defender always fails to start, gives "Error 1058"
• Under Settings > Update & Security > Windows Defender, every option is greyed out
• Can't manually start the "Security Center" service
  • Initially set to "Disabled"
  • Change setting to "Automatic," start service manually
  • After a short time, it reverts back to "Disabled"

Troubleshooting Steps

• Performed virus/malware removal
  • Malwarebytes, SUPERAntiSpyware, HitmanPro, AdwCleaner, Kaspersky's TDSS Removal, Bitdefender, Spybot
  • Individually installed, scanned, and removed each
  • Found some adware/viruses that were removed
  • Nothing shows up in any scans now (seems like everything active was removed)
• Checked Group Policy Editor/registry key for the "Disable Windows Defender" setting
  • Made sure everything was set to "enable" Defender
  • Still see symptoms
• sfc /scannow
  • Showed some errors that couldn't be resolved
  • Seems to be missing critical files in the running and backup file list
  • I have the CBS.log that was ran immediately before posting; not sure how to attach it or if I should include a snippet
  • EDIT: just re-looked through the log output, seems like most of the "check failed" errors were for different shortcut files (Task Scheduler, etc.). Not sure how applicable this is now

Possible Solutions

• Download + reinstall Windows Defender to replace missing files
  • Not sure if this is even possible, given that it's a core system component in W10
• Restore Registry keys back to default settings
  • Virus seems to have messed up several places
  • Nothing specific to Windows 10 online for getting Windows Defender back to stock in registry