windows defender not scanning on its own

mlrz24

New Member
Messages
16
I have windows 8.1. I am running windows defender cause its built in and the paid version of Malwarebytes Anti-Malware. The problem I'm having is windows defender updates and says it running properly but it won't let me set an automatic system scan. I get a pop up from the windows notification screen once a week saying I need to run a system scan. Just wondering what the problem is and how to fix it? I thought they were different software ruling out them clashing with each other.
 

My Computer

System One

  • OS
    windows 8
    Computer type
    PC/Desktop
    System Manufacturer/Model
    gateway

My Computer

System One

  • OS
    windows 8.1 Update 1 Pro 64bit
    System Manufacturer/Model
    Pavillion H8-1202
    CPU
    I7-2600 @ 3.4 GHz
    Motherboard
    PEGATRON
    Memory
    8 GB
    Graphics Card(s)
    NIVDIA GeForce GT 520
    Sound Card
    Realtek ALC656GR CODEC
    Monitor(s) Displays
    Samsung SyncMaster S22B350
    Screen Resolution
    1920X1080 32 bit color
    Hard Drives
    Samsung 850 EVO SSD 500GB
    Keyboard
    Razer Blackwidow Ultimate 2013
    Mouse
    Logitech M510
View attachment 55752
Does it look like this in Action Center under security or does it show Malwarebytes. The premium version is an Active protection and not just an on demand scanner.
 

My Computer

System One

  • OS
    Windows 8.1 Update Pro in Hyper-V/Windows 10 Pro 64 bit
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Cliff's Black & Blue Wonder
    CPU
    Intel Core i9-9900K
    Motherboard
    ASUS ROG Maximus X Hero
    Memory
    32 GB Quad Kit, G.Skill Trident Z RGB Series schwarz, DDR4-3866, 18-19-19-39-2T
    Graphics Card(s)
    ASUS GeForce RTX 3090 ROG Strix O24G, 24576 MB GDDR6X
    Sound Card
    (1) HD Webcam C270 (2) NVIDIA High Definition Audio (3) Realtek High Definition Audio
    Monitor(s) Displays
    BenQ BL2711U(4K) and a hp 27vx(1080p)
    Screen Resolution
    1920 x 1080 x 32 bits (4294967296 colors) @ 60 Hz
    Hard Drives
    C: Samsung 960 EVO NVMe M.2 SSD
    E: & O: Libraries & OneDrive-> Samsung 850 EVO 1TB
    D: Hyper-V VM's -> Samsung PM951 Client M.2 512Gb SSD
    G: System Images -> HDD Seagate Barracuda 2TB
    PSU
    Corsair HX1000i High Performance ATX Power Supply 80+ Platinum
    Case
    hanteks Enthoo Pro TG
    Cooling
    Thermaltake Floe Riing RGB TT Premium-Edition 360mm and 3 Corsair blue LED fans
    Keyboard
    Trust GTX THURA
    Mouse
    Trust GTX 148
    Internet Speed
    25+/5+ (+usually faster)
    Browser
    Edge; Chrome; IE11
    Antivirus
    Windows Defender of course & Malwarebytes Anti-Exploit as a
    Other Info
    Router: FRITZ!Box 7590 AX V2
    Sound system: SHARP HT-SBW460 Dolby Atmos Soundbar
    Webcam: Logitech BRIO ULTRA HD PRO WEBCAM 4K webcam with HDR
cliff s: yes my action center looks like that.
nuccii: when I try to set the scheduler following that link I get task license validation incorrect.
 

My Computer

System One

  • OS
    windows 8
    Computer type
    PC/Desktop
    System Manufacturer/Model
    gateway
Do you still have a 3rd party antivirus trial version installed still on your computer, if you do use their removal tool.

Run sfc /scannow in an elevated command prompt.
 

My Computer

System One

  • OS
    windows 8.1 Update 1 Pro 64bit
    System Manufacturer/Model
    Pavillion H8-1202
    CPU
    I7-2600 @ 3.4 GHz
    Motherboard
    PEGATRON
    Memory
    8 GB
    Graphics Card(s)
    NIVDIA GeForce GT 520
    Sound Card
    Realtek ALC656GR CODEC
    Monitor(s) Displays
    Samsung SyncMaster S22B350
    Screen Resolution
    1920X1080 32 bit color
    Hard Drives
    Samsung 850 EVO SSD 500GB
    Keyboard
    Razer Blackwidow Ultimate 2013
    Mouse
    Logitech M510
I tried that nothing happened. I bought my pc from best and was surprised how little bloatware was on it. I did my best to remove the junk right away
 

My Computer

System One

  • OS
    windows 8
    Computer type
    PC/Desktop
    System Manufacturer/Model
    gateway
Dumb question I know, but I just have to ask: Have you run a manual scan? In Defender there is no auto scan switch, just an admin turn this app on and turn on real time protection. Once your system has been thoroughly scanned the real time is enough(theoretically). It could also be scanning should be done daily when Maintenance is done. In Action Center under Maintenance>Automatic maintenance>change maintenance settings, have you set a time when your PC is ON but NOT in use, to do daily maintenance. The time is important.
 

My Computer

System One

  • OS
    Windows 8.1 Update Pro in Hyper-V/Windows 10 Pro 64 bit
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Cliff's Black & Blue Wonder
    CPU
    Intel Core i9-9900K
    Motherboard
    ASUS ROG Maximus X Hero
    Memory
    32 GB Quad Kit, G.Skill Trident Z RGB Series schwarz, DDR4-3866, 18-19-19-39-2T
    Graphics Card(s)
    ASUS GeForce RTX 3090 ROG Strix O24G, 24576 MB GDDR6X
    Sound Card
    (1) HD Webcam C270 (2) NVIDIA High Definition Audio (3) Realtek High Definition Audio
    Monitor(s) Displays
    BenQ BL2711U(4K) and a hp 27vx(1080p)
    Screen Resolution
    1920 x 1080 x 32 bits (4294967296 colors) @ 60 Hz
    Hard Drives
    C: Samsung 960 EVO NVMe M.2 SSD
    E: & O: Libraries & OneDrive-> Samsung 850 EVO 1TB
    D: Hyper-V VM's -> Samsung PM951 Client M.2 512Gb SSD
    G: System Images -> HDD Seagate Barracuda 2TB
    PSU
    Corsair HX1000i High Performance ATX Power Supply 80+ Platinum
    Case
    hanteks Enthoo Pro TG
    Cooling
    Thermaltake Floe Riing RGB TT Premium-Edition 360mm and 3 Corsair blue LED fans
    Keyboard
    Trust GTX THURA
    Mouse
    Trust GTX 148
    Internet Speed
    25+/5+ (+usually faster)
    Browser
    Edge; Chrome; IE11
    Antivirus
    Windows Defender of course & Malwarebytes Anti-Exploit as a
    Other Info
    Router: FRITZ!Box 7590 AX V2
    Sound system: SHARP HT-SBW460 Dolby Atmos Soundbar
    Webcam: Logitech BRIO ULTRA HD PRO WEBCAM 4K webcam with HDR
My pc is on 24/7. I went under maintenance like you suggested and everything is correct. i check windows defender settings and real time protection is on. I also try to run a manual scan once a week but I would like my PC to do it for me like xp use to. instead the action center says it needs to do a scan at least once a week but won't do it automatically.
 

My Computer

System One

  • OS
    windows 8
    Computer type
    PC/Desktop
    System Manufacturer/Model
    gateway
Your not the first on with this problem read this on Microsoft Community.
This is the last post there:

GreginMich replied on February 10, 2014
icon_down.png

  • icon_closeicon.png


icon_reply.png
In reply to Mission444's post on February 10, 2014



The “normal” problem with this is that everything is hidden away so well that people just don't realize that a scheduled scan is being run. This is the first case I’ve seen where it’s actually failing to run. Since my reply was a highfalutin explanation of why you won’t have this problem with the Windows (8) Defender Scheduled Scan, and it turns out that you actually do have this problem, my reply should definitely be unmarked as the “answer” – and I’m not sure that I really have an answer for this one.


The first thing you should do is run Automatic Maintenance manually (where it won’t be constrained to idle-time) and see if the scan completes successfully:
Action Center > Maintenance > Start Maintenance

And then run the System Maintenance Troubleshooter:
Action Center > Troubleshooting > System and Security > Run maintenance tasks > Advanced

And while you’re in the vicinity, run the Power Troubleshooter:
Action Center > Troubleshooting > System and Security > Improve power usage > Advanced

If that doesn’t help, then I would take a look at the Event Viewer and Task Scheduler logs for a clue to what’s going on:
Event Viewer > Applications and Services Logs > Microsoft > Windows > Windows Defender > Operational
Task Scheduler > Task Scheduler Library > Microsoft > Windows > Windows Defender > Windows Defender Scheduled Scan (History)
Task Scheduler > Task Scheduler Library > Microsoft > Windows > Task Scheduler > Regular Maintenance (History)


GreginMich
 

My Computer

System One

  • OS
    Windows 8.1 Update Pro in Hyper-V/Windows 10 Pro 64 bit
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Cliff's Black & Blue Wonder
    CPU
    Intel Core i9-9900K
    Motherboard
    ASUS ROG Maximus X Hero
    Memory
    32 GB Quad Kit, G.Skill Trident Z RGB Series schwarz, DDR4-3866, 18-19-19-39-2T
    Graphics Card(s)
    ASUS GeForce RTX 3090 ROG Strix O24G, 24576 MB GDDR6X
    Sound Card
    (1) HD Webcam C270 (2) NVIDIA High Definition Audio (3) Realtek High Definition Audio
    Monitor(s) Displays
    BenQ BL2711U(4K) and a hp 27vx(1080p)
    Screen Resolution
    1920 x 1080 x 32 bits (4294967296 colors) @ 60 Hz
    Hard Drives
    C: Samsung 960 EVO NVMe M.2 SSD
    E: & O: Libraries & OneDrive-> Samsung 850 EVO 1TB
    D: Hyper-V VM's -> Samsung PM951 Client M.2 512Gb SSD
    G: System Images -> HDD Seagate Barracuda 2TB
    PSU
    Corsair HX1000i High Performance ATX Power Supply 80+ Platinum
    Case
    hanteks Enthoo Pro TG
    Cooling
    Thermaltake Floe Riing RGB TT Premium-Edition 360mm and 3 Corsair blue LED fans
    Keyboard
    Trust GTX THURA
    Mouse
    Trust GTX 148
    Internet Speed
    25+/5+ (+usually faster)
    Browser
    Edge; Chrome; IE11
    Antivirus
    Windows Defender of course & Malwarebytes Anti-Exploit as a
    Other Info
    Router: FRITZ!Box 7590 AX V2
    Sound system: SHARP HT-SBW460 Dolby Atmos Soundbar
    Webcam: Logitech BRIO ULTRA HD PRO WEBCAM 4K webcam with HDR
Ok. Thanks for the help. I will check all that. Pc won't let me access event viewer and task scheduler. It gives me an error message task validation incorrect. More digging into that
 

My Computer

System One

  • OS
    windows 8
    Computer type
    PC/Desktop
    System Manufacturer/Model
    gateway
Ok. Thanks for the help. I will check all that. Pc won't let me access event viewer and task scheduler. It gives me an error message task validation incorrect. More digging into that
ooooh:eek:! That sounds like you're MMC snap-in's are broken too. Before you do any thing else open an Admin command prompt and cut and paste this in there then reboot:

Code:
[SIZE=2]Dism.exe /online /Cleanup-Image /StartComponentCleanup&sfc/scannow&Dism /Online /Cleanup-Image /RestoreHealth&sfc/scannow [/SIZE]
It'll take a while but it cleans the WinSxS folder and tries to fix corrupt system files.
 
Last edited:

My Computer

System One

  • OS
    Windows 8.1 Update Pro in Hyper-V/Windows 10 Pro 64 bit
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Cliff's Black & Blue Wonder
    CPU
    Intel Core i9-9900K
    Motherboard
    ASUS ROG Maximus X Hero
    Memory
    32 GB Quad Kit, G.Skill Trident Z RGB Series schwarz, DDR4-3866, 18-19-19-39-2T
    Graphics Card(s)
    ASUS GeForce RTX 3090 ROG Strix O24G, 24576 MB GDDR6X
    Sound Card
    (1) HD Webcam C270 (2) NVIDIA High Definition Audio (3) Realtek High Definition Audio
    Monitor(s) Displays
    BenQ BL2711U(4K) and a hp 27vx(1080p)
    Screen Resolution
    1920 x 1080 x 32 bits (4294967296 colors) @ 60 Hz
    Hard Drives
    C: Samsung 960 EVO NVMe M.2 SSD
    E: & O: Libraries & OneDrive-> Samsung 850 EVO 1TB
    D: Hyper-V VM's -> Samsung PM951 Client M.2 512Gb SSD
    G: System Images -> HDD Seagate Barracuda 2TB
    PSU
    Corsair HX1000i High Performance ATX Power Supply 80+ Platinum
    Case
    hanteks Enthoo Pro TG
    Cooling
    Thermaltake Floe Riing RGB TT Premium-Edition 360mm and 3 Corsair blue LED fans
    Keyboard
    Trust GTX THURA
    Mouse
    Trust GTX 148
    Internet Speed
    25+/5+ (+usually faster)
    Browser
    Edge; Chrome; IE11
    Antivirus
    Windows Defender of course & Malwarebytes Anti-Exploit as a
    Other Info
    Router: FRITZ!Box 7590 AX V2
    Sound system: SHARP HT-SBW460 Dolby Atmos Soundbar
    Webcam: Logitech BRIO ULTRA HD PRO WEBCAM 4K webcam with HDR
Mmc snap ins? I will try this later. Stepping out now. You have been so helpful. Thank you. I will let you know if this works
 

My Computer

System One

  • OS
    windows 8
    Computer type
    PC/Desktop
    System Manufacturer/Model
    gateway
didn't work I type that in and the command box pops up then disappears.
 

My Computer

System One

  • OS
    windows 8
    Computer type
    PC/Desktop
    System Manufacturer/Model
    gateway
didn't work I type that in and the command box pops up then disappears.

You have to use an elevated(run as administrator) command prompt. When you cut & paste it from the code box, make sure you get all the code. Then the box will stay and you can see what it's doing. please try again. Here it is w/o the code box:

Dism.exe /online /Cleanup-Image /StartComponentCleanup&sfc/scannow&Dism /Online /Cleanup-Image /RestoreHealth&sfc/scannow
 

My Computer

System One

  • OS
    Windows 8.1 Update Pro in Hyper-V/Windows 10 Pro 64 bit
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Cliff's Black & Blue Wonder
    CPU
    Intel Core i9-9900K
    Motherboard
    ASUS ROG Maximus X Hero
    Memory
    32 GB Quad Kit, G.Skill Trident Z RGB Series schwarz, DDR4-3866, 18-19-19-39-2T
    Graphics Card(s)
    ASUS GeForce RTX 3090 ROG Strix O24G, 24576 MB GDDR6X
    Sound Card
    (1) HD Webcam C270 (2) NVIDIA High Definition Audio (3) Realtek High Definition Audio
    Monitor(s) Displays
    BenQ BL2711U(4K) and a hp 27vx(1080p)
    Screen Resolution
    1920 x 1080 x 32 bits (4294967296 colors) @ 60 Hz
    Hard Drives
    C: Samsung 960 EVO NVMe M.2 SSD
    E: & O: Libraries & OneDrive-> Samsung 850 EVO 1TB
    D: Hyper-V VM's -> Samsung PM951 Client M.2 512Gb SSD
    G: System Images -> HDD Seagate Barracuda 2TB
    PSU
    Corsair HX1000i High Performance ATX Power Supply 80+ Platinum
    Case
    hanteks Enthoo Pro TG
    Cooling
    Thermaltake Floe Riing RGB TT Premium-Edition 360mm and 3 Corsair blue LED fans
    Keyboard
    Trust GTX THURA
    Mouse
    Trust GTX 148
    Internet Speed
    25+/5+ (+usually faster)
    Browser
    Edge; Chrome; IE11
    Antivirus
    Windows Defender of course & Malwarebytes Anti-Exploit as a
    Other Info
    Router: FRITZ!Box 7590 AX V2
    Sound system: SHARP HT-SBW460 Dolby Atmos Soundbar
    Webcam: Logitech BRIO ULTRA HD PRO WEBCAM 4K webcam with HDR
here is what it said after the program ran
 

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My Computer

System One

  • OS
    windows 8
    Computer type
    PC/Desktop
    System Manufacturer/Model
    gateway
Have you rebooted and can you access the task scheduler or event viewer now?
 

My Computer

System One

  • OS
    Windows 8.1 Update Pro in Hyper-V/Windows 10 Pro 64 bit
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Cliff's Black & Blue Wonder
    CPU
    Intel Core i9-9900K
    Motherboard
    ASUS ROG Maximus X Hero
    Memory
    32 GB Quad Kit, G.Skill Trident Z RGB Series schwarz, DDR4-3866, 18-19-19-39-2T
    Graphics Card(s)
    ASUS GeForce RTX 3090 ROG Strix O24G, 24576 MB GDDR6X
    Sound Card
    (1) HD Webcam C270 (2) NVIDIA High Definition Audio (3) Realtek High Definition Audio
    Monitor(s) Displays
    BenQ BL2711U(4K) and a hp 27vx(1080p)
    Screen Resolution
    1920 x 1080 x 32 bits (4294967296 colors) @ 60 Hz
    Hard Drives
    C: Samsung 960 EVO NVMe M.2 SSD
    E: & O: Libraries & OneDrive-> Samsung 850 EVO 1TB
    D: Hyper-V VM's -> Samsung PM951 Client M.2 512Gb SSD
    G: System Images -> HDD Seagate Barracuda 2TB
    PSU
    Corsair HX1000i High Performance ATX Power Supply 80+ Platinum
    Case
    hanteks Enthoo Pro TG
    Cooling
    Thermaltake Floe Riing RGB TT Premium-Edition 360mm and 3 Corsair blue LED fans
    Keyboard
    Trust GTX THURA
    Mouse
    Trust GTX 148
    Internet Speed
    25+/5+ (+usually faster)
    Browser
    Edge; Chrome; IE11
    Antivirus
    Windows Defender of course & Malwarebytes Anti-Exploit as a
    Other Info
    Router: FRITZ!Box 7590 AX V2
    Sound system: SHARP HT-SBW460 Dolby Atmos Soundbar
    Webcam: Logitech BRIO ULTRA HD PRO WEBCAM 4K webcam with HDR
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