Windows Defender Offline,with UEFI & Secure Boot ENABLED RRS feed

  • General discussion

  • When will Windows Defender Offline x64 be signed for use with New OEM manufacturer's PC's with UEFI & Secure Boot ENABLED?
    Friday, March 8, 2013 12:18 PM

All replies

  • Since you have UEFI , your Anti-Malware software in Windows 8 will boot because by UEFI , Anti-Malware take advantage of Early Launch Anti-Malware (ELAM) and it will boot first. It is apply to Windows Defender in Windows 8 and other Windows 8 certified Anti-Malware. Therefore, there is no need to run Windows Defender Offline as ELAM do the same.

    Take a look at:

    However it is good suggestion to let Windows Defender Offline verify .

    Sunday, March 10, 2013 4:09 AM
  • I know that Secure Boot is about.

    A quick list of bootable CD's which are signed by Microsoft for use with UEFI & Secure Boot.

    Windows 8x64 Startup Repair CD.
    MSDaRT 8x64 CD.
    Paragon 12 Recovery CD.
    Symantec SSR 2013 Desktop Recovery CD.
    Macrium Reflect Recovery CD.


    Windows Defender Offline x64 is not signed.

    Tuesday, March 12, 2013 10:56 PM
  • Thank you for your feedback.
    Wednesday, March 13, 2013 4:14 PM
  • Update.
    Windows Defender Offline will now boot with Secure Boot ENABLED.
    Thursday, May 2, 2013 5:43 PM
  • Having examined the Defender Offline generated images, I can't see how WDO ever worked with Secure Boot since it's still based on the Win7 PE! So none of the boot files will be signed for Secure Boot. Also, the driver compliment is old and won't work with many newer chipset HDD controllers. So, when will MS provide a Secure Boot capable WDO? All they need to do is build it from a Win8.1 PE to solve most issues. I had to do that myself - big waste of energy and time, just because somebody at MS can't keep this utility adequately updated!
    • Edited by nickonac Thursday, November 5, 2015 8:58 PM It never worked!
    Monday, November 2, 2015 12:26 PM