Windows 10: All scans of mapped drive fail (full, quick, custom)

Discus and support All scans of mapped drive fail (full, quick, custom) in AntiVirus, Firewalls and System Security to solve the problem; Hi! I'm having a problem with the Custom Scan operation in Windows Defender. I use this frequently on my local machine, but when I try to scan my NAS... Discussion in 'AntiVirus, Firewalls and System Security' started by 7Natives, Apr 16, 2020.

  1. 7NATIVES
    7Natives Win User

    All scans of mapped drive fail (full, quick, custom)


    Hi! I'm having a problem with the Custom Scan operation in Windows Defender. I use this frequently on my local machine, but when I try to scan my NAS (mapped as "H") it fails taking anywhere from several seconds to 13-minutes but always showing 0 files scanned. The topology is all gigabit ethernet: Desktop > LAN > switch > LAN > NAS. My computer is part of a small workgroup, DHCP is handled by LAN-wired router, and the NAS is a Drobo. I'm running Windows 10 Pro x64 v1909 build 18363.778

    I have tried the following:
    • Tut 70530 Local Group Policy Editor | Include Mapped Drive on Full Scan -- no joy
    • Tut 70530 Registry hack | Include Mapped Drive on Full Scan -- no joy
    • Tut 152869 Registry hack | Scan Network Files -- no joy
    It seems no matter what I do I can't get WD-AV to scan my mapped NAS or any part thereof. I did just see that the latest definitions broke WD, so maybe that's it. Both registry hacks above are still in place, I put the policy setting back to default.
    Any suggestions?
    Thanks,
    7

    :)
     
    7Natives, Apr 16, 2020
    #1
  2. JOEJY
    JoeJY Win User

    Windows defender custom scan does not scan external drives

    I have Defender Windows 10. I tried using custom scan to select and scan external drives. The screen listing the drives comes up, but the "OK" button remains grayed out so unable to scan any of the drives listed. Any suggestions would be appreciated.
     
    JoeJY, Apr 16, 2020
    #2
  3. JOEJY
    JoeJY Win User
    Windows defender custom scan does not scan external drives

    I tried the custom scan in Defender Windows 10. It brings up the list of drives but the "OK" button remains grayed out when I select any drive in the list, so still unable to scan external drives... Any suggestion would be appreciated.
     
    JoeJY, Apr 16, 2020
    #3
  4. BTC55
    BTC55 Win User

    All scans of mapped drive fail (full, quick, custom)

    Windows Defender - Quick Scan

    Windows defender no longer offers a quick scan option.

    My options are:

    • Scan
    • Advanced Scan
    • Full Scan
    • Custom Scan
    • Windows Defender Offline scan
    Whichever option I check, the scan will need to run for hours to complete.

    Is a quick scan available?

    How do I restore this feature?
     
    BTC55, Apr 16, 2020
    #4
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All scans of mapped drive fail (full, quick, custom)

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