Windows 10: Windwos Defender could not start due to missing file. Error 2

Windows 10 Microsoft Windows Defender Service could not start. Error 2 "Could not find the file". Indeed the Path "C:\ProgramData\Microsoft\Windows Defender\Platform\4.18.2302.7-0\MsMpEng.exe" is not valid. Under plattform I have the folders 4.18.2301.6-0 and 4.18.2302.3-0 but not 4.18.2302.7-0 the service refers to.Don't know how to update, un- or reinstall.Windows Update could not update with error 0x80070643Thanks for your helpmy OS is set up in GermanBernd

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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

 

Can not find script file error

Hello,

This could be due to a missing script file or that an application is causing the error. As a first troubleshooting step, we suggest that you locate or navigate to the location listed in the error and see if the file it is looking for is there. If you are
unable to locate the file, an application is causing this error to pop-up. If that is the case, we suggest that you boot your PC in Safe Mode and see if the error still pops up. You may follow the steps on this
link on how to start your PC in Safe Mode.

If the problem does not exist in Safe Mode, we would know that an application is causing the error. However, if the problem is presented while in Safe Mode, the problem may be caused by Windows itself.

We look forward to an update from you.

 

missing icons in start menu

Hi Wickiwizard,

It is possible that the icon of your apps in Start menu is missing due to a corrupted system files. To provide you the accurate resolution, kindly answer the following questions:

• Have you made any recent changes prior to this issue?
• Does this happen only with icons in Start menu?
• What troubleshooting steps you've done so far?

Meanwhile, we suggest that you perform the steps in this
article on how to troubleshoot problems with Start menu or Cortana.

If the issue still persists, we recommend that you follow the suggestion shared by
Meliton Dec on this thread.
The given troubleshooting steps will help repair or reset not only missing apps but also lost icon.

Keep us posted if you need additional help.