Solved How to turn on Windows Defender

skewett

Member
Member
Messages
12
Hi Guys
I'm using Win 8 Pro and following some advice on another thread I went to check my Windows Defender via 'all apps'

When I click on it I just get the following message...........

"Windows Defender has been turned off and it isn't monitoring your computer"

I've tried a few things but seem to come up with the same message whichever way I try to start Defender. obviously I'm a bit worried that my machine might be unprotected.

Any advice?
 

My Computer

System One

  • OS
    Win 8 Pro
bring up charms menu on right hand side of screen, click settings, click control panel, click window defender, click settings tab, click turn on real time protection.
 

My Computer

System One

  • OS
    Windows 8 Pro ($39.99 upgrade)
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home Built
    CPU
    Intel I5 3570K overclocked to 4.2ghz
    Motherboard
    Asus P8Z77-V LX
    Memory
    Cosrair DDR3-1600 (4 x 4gb)
    Graphics Card(s)
    Nvidia GeForce GT 610 2GB
    Sound Card
    None
    Monitor(s) Displays
    AOC 27" LCD
    Screen Resolution
    1920x0180
    Hard Drives
    Seagate HDD 500gb (windows)
    Seagate HDD 1.5tb (media)
    Seagate HDD 1tb (media)
    Seagate HDD 1tb (media)
    PSU
    CoolMax 700watt
    Case
    Cosiar R400 Carbide series
    Cooling
    Cool Master H212
    Keyboard
    Dell
    Mouse
    PowerUp 3 button mouse
    Internet Speed
    12mb down, 1mb up
    Other Info
    qty. (5) 120mm fans, four are monitored by motherboard.
    Logitech T650 Touchpad for touch screen gestures
Thanks

I had tried that.

Just came across a similar solution via Control Panel / Access Centre.

Cheers as ever...
 

My Computer

System One

  • OS
    Win 8 Pro

My Computer

System One

  • OS
    64-bit Windows 10
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Custom self built
    CPU
    Intel i7-8700K OC'd to 5 GHz
    Motherboard
    ASUS ROG Maximus XI Formula Z390
    Memory
    64 GB (4x16GB) G.SKILL TridentZ RGB DDR4 3600 MHz (F4-3600C18D-32GTZR)
    Graphics Card(s)
    ASUS ROG-STRIX-GTX1080TI-O11G-GAMING
    Sound Card
    Integrated Digital Audio (S/PDIF)
    Monitor(s) Displays
    2 x Samsung Odyssey G7 27"
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Samsung 990 PRO M.2,
    4TB Samsung 990 PRO PRO M.2,
    8TB WD MyCloudEX2Ultra NAS
    PSU
    OCZ Series Gold OCZZ1000M 1000W
    Case
    Thermaltake Core P3
    Cooling
    Corsair Hydro H115i
    Keyboard
    Logitech wireless K800
    Mouse
    Logitech MX Master 3
    Internet Speed
    1 Gb/s Download and 35 Mb/s Upload
    Browser
    Internet Explorer 11
    Antivirus
    Malwarebyte Anti-Malware Premium
    Other Info
    Logitech Z625 speaker system,
    Logitech BRIO 4K Pro webcam,
    HP Color LaserJet Pro MFP M477fdn,
    APC SMART-UPS RT 1000 XL - SURT1000XLI,
    Galaxy S23 Plus phone
bring up charms menu on right hand side of screen, click settings, click control panel, click window defender, click settings tab, click turn on real time protection.

Refuses to allow user to open, just pop up saying its closed
 

My Computer

System One

  • OS
    Win 10
    Computer type
    PC/Desktop
    System Manufacturer/Model
    pc specialist made to order
    CPU
    Intel® Core™i7 Quad Core Processor i7-4790 (3.6GHz) 8MB Cache
    Motherboard
    ASUS® H81M-PLUS: Micro-ATX, LG1150, USB 3.0, SATA 6GBs
    Memory
    16GB KINGSTON DUAL-DDR3 1600MHz (2 x 8GB)
    Graphics Card(s)
    2GB NVIDIA GEFORCE GTX 750 Ti - DVI, mHDMI, VGA - 3D Vision Ready
    Sound Card
    ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD)
    Monitor(s) Displays
    iiyama 24 inch flat screen
    Screen Resolution
    1920 x 1080
    Hard Drives
    1TB 3.5" SEAGATE SSHD, SATA 6Gb/s 7200 RPM (64MB + 8GB SSD CACHE)

    2TB Seagate SATA HDD

    500Gb SATA docked
    Case
    In Win Turbo
    Cooling
    Super Quiet 22dBA Triple Copper Heatpipe Intel CPU Cooler
    Keyboard
    microsoft mutlimedia keyboard
    Mouse
    logitech corded
    Internet Speed
    152mb
    Browser
    FF, IE11
    Antivirus
    AVG Internet Security 2015
    Other Info
    16x BLU-RAY WRITER DRIVE, 16x DVD ±R/±RW

    10/100/1000 GIGABIT LAN PORT
I have the same problem when trying to turn on Defender. I checked Services and it's set to manual and not started, when I clicked start, I have following error:

The Windows Defender service on Local Computer started and then stopped. Some services stop automatically if they are not in use by other services or programs.

I have Zone Alarm firewall + antivirus installed, but turning that off did not help the situation. I also tried setting Windows Defender service to automatic, but upon rebooting it's reverted back to manual and not started.
 

My Computer

System One

  • OS
    Windows 8 Pro
Mine is Kaspersky Internet suite 2013. I assume it turned Defender off, but even when KIS is closed down, Defender will not run. It worked fine with KIS and Win 7, so it must be a Win 8 thing.
 

My Computer

System One

  • OS
    Win 10
    Computer type
    PC/Desktop
    System Manufacturer/Model
    pc specialist made to order
    CPU
    Intel® Core™i7 Quad Core Processor i7-4790 (3.6GHz) 8MB Cache
    Motherboard
    ASUS® H81M-PLUS: Micro-ATX, LG1150, USB 3.0, SATA 6GBs
    Memory
    16GB KINGSTON DUAL-DDR3 1600MHz (2 x 8GB)
    Graphics Card(s)
    2GB NVIDIA GEFORCE GTX 750 Ti - DVI, mHDMI, VGA - 3D Vision Ready
    Sound Card
    ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD)
    Monitor(s) Displays
    iiyama 24 inch flat screen
    Screen Resolution
    1920 x 1080
    Hard Drives
    1TB 3.5" SEAGATE SSHD, SATA 6Gb/s 7200 RPM (64MB + 8GB SSD CACHE)

    2TB Seagate SATA HDD

    500Gb SATA docked
    Case
    In Win Turbo
    Cooling
    Super Quiet 22dBA Triple Copper Heatpipe Intel CPU Cooler
    Keyboard
    microsoft mutlimedia keyboard
    Mouse
    logitech corded
    Internet Speed
    152mb
    Browser
    FF, IE11
    Antivirus
    AVG Internet Security 2015
    Other Info
    16x BLU-RAY WRITER DRIVE, 16x DVD ±R/±RW

    10/100/1000 GIGABIT LAN PORT
That's correct. When you install a 3rd party program like Zone Alarm, some will disable Windows Defender to prevent conflicts since it will be used instead of Windows Defender.
 

My Computer

System One

  • OS
    64-bit Windows 10
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Custom self built
    CPU
    Intel i7-8700K OC'd to 5 GHz
    Motherboard
    ASUS ROG Maximus XI Formula Z390
    Memory
    64 GB (4x16GB) G.SKILL TridentZ RGB DDR4 3600 MHz (F4-3600C18D-32GTZR)
    Graphics Card(s)
    ASUS ROG-STRIX-GTX1080TI-O11G-GAMING
    Sound Card
    Integrated Digital Audio (S/PDIF)
    Monitor(s) Displays
    2 x Samsung Odyssey G7 27"
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Samsung 990 PRO M.2,
    4TB Samsung 990 PRO PRO M.2,
    8TB WD MyCloudEX2Ultra NAS
    PSU
    OCZ Series Gold OCZZ1000M 1000W
    Case
    Thermaltake Core P3
    Cooling
    Corsair Hydro H115i
    Keyboard
    Logitech wireless K800
    Mouse
    Logitech MX Master 3
    Internet Speed
    1 Gb/s Download and 35 Mb/s Upload
    Browser
    Internet Explorer 11
    Antivirus
    Malwarebyte Anti-Malware Premium
    Other Info
    Logitech Z625 speaker system,
    Logitech BRIO 4K Pro webcam,
    HP Color LaserJet Pro MFP M477fdn,
    APC SMART-UPS RT 1000 XL - SURT1000XLI,
    Galaxy S23 Plus phone
KIS
 

My Computer

System One

  • OS
    Win 10
    Computer type
    PC/Desktop
    System Manufacturer/Model
    pc specialist made to order
    CPU
    Intel® Core™i7 Quad Core Processor i7-4790 (3.6GHz) 8MB Cache
    Motherboard
    ASUS® H81M-PLUS: Micro-ATX, LG1150, USB 3.0, SATA 6GBs
    Memory
    16GB KINGSTON DUAL-DDR3 1600MHz (2 x 8GB)
    Graphics Card(s)
    2GB NVIDIA GEFORCE GTX 750 Ti - DVI, mHDMI, VGA - 3D Vision Ready
    Sound Card
    ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD)
    Monitor(s) Displays
    iiyama 24 inch flat screen
    Screen Resolution
    1920 x 1080
    Hard Drives
    1TB 3.5" SEAGATE SSHD, SATA 6Gb/s 7200 RPM (64MB + 8GB SSD CACHE)

    2TB Seagate SATA HDD

    500Gb SATA docked
    Case
    In Win Turbo
    Cooling
    Super Quiet 22dBA Triple Copper Heatpipe Intel CPU Cooler
    Keyboard
    microsoft mutlimedia keyboard
    Mouse
    logitech corded
    Internet Speed
    152mb
    Browser
    FF, IE11
    Antivirus
    AVG Internet Security 2015
    Other Info
    16x BLU-RAY WRITER DRIVE, 16x DVD ±R/±RW

    10/100/1000 GIGABIT LAN PORT
Brink

hi

which AV is better to use with 8

Hello njnitehawk,

That's really a matter of personal choice, but I like using the included Windows Defender (rebranded MSE). :)
 

My Computer

System One

  • OS
    64-bit Windows 10
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Custom self built
    CPU
    Intel i7-8700K OC'd to 5 GHz
    Motherboard
    ASUS ROG Maximus XI Formula Z390
    Memory
    64 GB (4x16GB) G.SKILL TridentZ RGB DDR4 3600 MHz (F4-3600C18D-32GTZR)
    Graphics Card(s)
    ASUS ROG-STRIX-GTX1080TI-O11G-GAMING
    Sound Card
    Integrated Digital Audio (S/PDIF)
    Monitor(s) Displays
    2 x Samsung Odyssey G7 27"
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Samsung 990 PRO M.2,
    4TB Samsung 990 PRO PRO M.2,
    8TB WD MyCloudEX2Ultra NAS
    PSU
    OCZ Series Gold OCZZ1000M 1000W
    Case
    Thermaltake Core P3
    Cooling
    Corsair Hydro H115i
    Keyboard
    Logitech wireless K800
    Mouse
    Logitech MX Master 3
    Internet Speed
    1 Gb/s Download and 35 Mb/s Upload
    Browser
    Internet Explorer 11
    Antivirus
    Malwarebyte Anti-Malware Premium
    Other Info
    Logitech Z625 speaker system,
    Logitech BRIO 4K Pro webcam,
    HP Color LaserJet Pro MFP M477fdn,
    APC SMART-UPS RT 1000 XL - SURT1000XLI,
    Galaxy S23 Plus phone
A good diplomatic reply Brink!!
 

My Computer

System One

  • OS
    Win 10
    Computer type
    PC/Desktop
    System Manufacturer/Model
    pc specialist made to order
    CPU
    Intel® Core™i7 Quad Core Processor i7-4790 (3.6GHz) 8MB Cache
    Motherboard
    ASUS® H81M-PLUS: Micro-ATX, LG1150, USB 3.0, SATA 6GBs
    Memory
    16GB KINGSTON DUAL-DDR3 1600MHz (2 x 8GB)
    Graphics Card(s)
    2GB NVIDIA GEFORCE GTX 750 Ti - DVI, mHDMI, VGA - 3D Vision Ready
    Sound Card
    ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD)
    Monitor(s) Displays
    iiyama 24 inch flat screen
    Screen Resolution
    1920 x 1080
    Hard Drives
    1TB 3.5" SEAGATE SSHD, SATA 6Gb/s 7200 RPM (64MB + 8GB SSD CACHE)

    2TB Seagate SATA HDD

    500Gb SATA docked
    Case
    In Win Turbo
    Cooling
    Super Quiet 22dBA Triple Copper Heatpipe Intel CPU Cooler
    Keyboard
    microsoft mutlimedia keyboard
    Mouse
    logitech corded
    Internet Speed
    152mb
    Browser
    FF, IE11
    Antivirus
    AVG Internet Security 2015
    Other Info
    16x BLU-RAY WRITER DRIVE, 16x DVD ±R/±RW

    10/100/1000 GIGABIT LAN PORT
.. but true. :D
 

My Computer

System One

  • OS
    64-bit Windows 10
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Custom self built
    CPU
    Intel i7-8700K OC'd to 5 GHz
    Motherboard
    ASUS ROG Maximus XI Formula Z390
    Memory
    64 GB (4x16GB) G.SKILL TridentZ RGB DDR4 3600 MHz (F4-3600C18D-32GTZR)
    Graphics Card(s)
    ASUS ROG-STRIX-GTX1080TI-O11G-GAMING
    Sound Card
    Integrated Digital Audio (S/PDIF)
    Monitor(s) Displays
    2 x Samsung Odyssey G7 27"
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Samsung 990 PRO M.2,
    4TB Samsung 990 PRO PRO M.2,
    8TB WD MyCloudEX2Ultra NAS
    PSU
    OCZ Series Gold OCZZ1000M 1000W
    Case
    Thermaltake Core P3
    Cooling
    Corsair Hydro H115i
    Keyboard
    Logitech wireless K800
    Mouse
    Logitech MX Master 3
    Internet Speed
    1 Gb/s Download and 35 Mb/s Upload
    Browser
    Internet Explorer 11
    Antivirus
    Malwarebyte Anti-Malware Premium
    Other Info
    Logitech Z625 speaker system,
    Logitech BRIO 4K Pro webcam,
    HP Color LaserJet Pro MFP M477fdn,
    APC SMART-UPS RT 1000 XL - SURT1000XLI,
    Galaxy S23 Plus phone
I did give MSE a run in Win 7 - it seemed solid enough to be fair but with programs like these its the results you do not see are the proof. Its normally only when something goes wrong do you question the doctor.
 

My Computer

System One

  • OS
    Win 10
    Computer type
    PC/Desktop
    System Manufacturer/Model
    pc specialist made to order
    CPU
    Intel® Core™i7 Quad Core Processor i7-4790 (3.6GHz) 8MB Cache
    Motherboard
    ASUS® H81M-PLUS: Micro-ATX, LG1150, USB 3.0, SATA 6GBs
    Memory
    16GB KINGSTON DUAL-DDR3 1600MHz (2 x 8GB)
    Graphics Card(s)
    2GB NVIDIA GEFORCE GTX 750 Ti - DVI, mHDMI, VGA - 3D Vision Ready
    Sound Card
    ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD)
    Monitor(s) Displays
    iiyama 24 inch flat screen
    Screen Resolution
    1920 x 1080
    Hard Drives
    1TB 3.5" SEAGATE SSHD, SATA 6Gb/s 7200 RPM (64MB + 8GB SSD CACHE)

    2TB Seagate SATA HDD

    500Gb SATA docked
    Case
    In Win Turbo
    Cooling
    Super Quiet 22dBA Triple Copper Heatpipe Intel CPU Cooler
    Keyboard
    microsoft mutlimedia keyboard
    Mouse
    logitech corded
    Internet Speed
    152mb
    Browser
    FF, IE11
    Antivirus
    AVG Internet Security 2015
    Other Info
    16x BLU-RAY WRITER DRIVE, 16x DVD ±R/±RW

    10/100/1000 GIGABIT LAN PORT
Couldn't get Windows Defender to run on a friends Windows 8 computer either advise on internet was to use services.msc command (windows key R to bring up run window) and set it to Auto startup and reboot but it still didn't work. Then I noticed that windows 'flag' system messages had notices about Anti-Virus and Anti-Spyware and was able to turn it on that way. Hope this helps - I'm going to reboot now after an update to make sure it keeps running!
 

My Computer

System One

  • OS
    Windows 7 / Windows 8
Confirmed mmordha's fix

mmordha has the key to this particular irritant from Windows 8. I had the exact same symptoms, but opening the "Action Center" and clicking on the *second* 'enable Windows Defender' link did the trick. The first enable link (beside the virus protection notification, I think) did squat, but the second link (spyware protection notification) did the trick. I suspect this is an issue with systems that came pre-installed with some commercial anti-virus crapware (mine was Norton). They oh-so-helpfully disable Windows Defender for you so it won't conflict with their nagware product...but really Windows? No 'enable' button on the dialog box telling you Defender is turned off? Just another classic example why this OS isn't ready for prime time yet, IMO. Bah.
 

My Computer

System One

  • OS
    Windows 8
I test AV at a large Fortune 10 company and we use Symantec Endpoint Protection at work and almost all of us use Microsoft Security Essentials on Win7 and the built-in Windows Defender on Windows 8. I also use MalWareBytes at home. I cannot recommend any other products based upon our testing, that's really all I can say...Hope this helps...
 

My Computer

System One

  • OS
    Win 10 Pro 64bit
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home built Intel i7-3770k-based system
    CPU
    Intel i7-3770k, Overclocked to 4.6GHz (46x100) with Corsair H110i GT cooler
    Motherboard
    ASRock Z77 OC Formula 2.30 BIOS
    Memory
    32GB DDR3 2133 Corsair Vengeance Pro
    Graphics Card(s)
    GeForce GTX 980ti SC ACS 6GB DDR5 by EVGA
    Sound Card
    Creative Sound Blaster X-Fi Titanium HD, Corsair SP2500 speakers and subwoofer
    Monitor(s) Displays
    LG 27EA33 [Monitor] (27.2"vis) HDMI
    Screen Resolution
    1920x1080
    Hard Drives
    Samsung SSD 850 EVO 250GB (system drive)
    WD 6TB Red NAS hard drives x 2 in Storage Spaces (redundancy)
    PSU
    Corsair 750ax fully modular power supply with sleeved cables
    Case
    Corsair Air 540 with 7 x 140mm fans on front, rear and top panels
    Cooling
    Corsair H110i GT liquid cooled CPU with 4 x 140" Corsair SP "push-pull" and 3 x 140mm fans
    Keyboard
    Thermaltake Poseidon Z illuminated keyboard
    Mouse
    Corsair M65 wired
    Internet Speed
    85MBps DSL
    Browser
    Chrome and Edge
    Antivirus
    Windows Defender, MalwareBytes Pro and CCleaner Pro
    Other Info
    Client of Windows Server 2012 R2 10 PC's, laptops and smartphones on the WLAN.

    1GBps Ethernet ports
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