Microsoft Defender Core service - Do I need it, can I remove it or disable it?


Sqrly

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I got a firewall popup for this and blocked it.

After researching some more I read in one post that Microsoft Defender Antivirus doesn't need this to work. It also seems to be what I classify as spyware as it collects a lot of data and sends it to M.$.

Information collected includes file data (file names, sizes, and hashes), process data (running processes, hashes), registry data, network connection data (host IPs and ports), and device details (device identifiers, names, and the operating system version).

Microsoft Defender Core service overview - Microsoft Defender for Endpoint


I do not want to disable Microsoft Defender Antivirus but I like to prevent as much of M.$'s 'data collection' as I can. At this point I can't do anything to affect it but block it in the firewall.

mdcs.JPG
 

My Computers

System One System Two

  • OS
    Windroid 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    MSI
    CPU
    Intel Core i9-14900K Raptor Lake Refreshed 6.0 GHZ
    Motherboard
    MSI MAG Z790 Tomahawk WiFi
    Memory
    32GB (2x16) GSKILL Trident Z5 RGB Series (Intel XMP 3.0) DDR5 RAM 6700MT/s
    Graphics Card(s)
    MSI Gaming GeForce RTX 4070 12GB
    Sound Card
    Onboard Realtek® ALC4080 Codec
    Monitor(s) Displays
    Monitor #1 Samsung Odyssey G50A WQHD G-Sync HDR10 Monitor #2 HP LA1911
    Screen Resolution
    2560x1440 and 1280x1024
    Hard Drives
    Samsung 980 PRO SSD 1TB PCIe 4.0 NVMe Gen 4 Gaming M.2 (150GB System / 850GB More Games)
    Crucial CT2000MX500SSD1 2TB (Games)
    Western Digital Green WD40EZRX 4TB (Data/Backup)
    Western Digital Blue WD60EZAZ 6TB (Storage)
    Western Digital Blue WD60EZAZ 6TB (Media)
    PSU
    Rosewill Hive-750S
    Case
    Cooler Master Elite 430 Mid Tower
    Cooling
    Cooler Master ML240L V2 Liquid CPU cooler + 3x120mm in + Isolated PSU Standard upward flow
    Keyboard
    Microsoft Natural Elite White PS/2 (with usb adapter)
    Mouse
    Microsoft D67-00001 Trackball Optical Mouse (rebuilt with ceramic bearings)
    Internet Speed
    350Mb/s hard wired
    Browser
    Edge, FF, Tor
    Antivirus
    Win Def
    Other Info
    Razer Tartarus V2 Gaming Keypad
    Logitech Z-5500 5.1 THX 505w (Orignal 10" Sub with (Fr, Rr, Ctr) Polk Audio satellites
  • Operating System
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    MSI
    CPU
    Intel Core i9-14900K Raptor Lake Refreshed 6.0 GHz FCLGA1700 (Gen 14)
    Motherboard
    MSI MAG Z790 Tomahawk WiFi
    Memory
    32GB (2x16) GSKILL Trident Z5 RGB Series (Intel XMP 3.0) DDR5 RAM 6700MT/s
    Graphics card(s)
    MSI Gaming GeForce RTX 3060Ti 8GB
    Sound Card
    Onboard Realtek® ALC4080 Codec
    Monitor(s) Displays
    Monitor #1 Samsung Odyssey G50A WQHD G-Sync HDR10 Monitor #2 Samsung TU7000 55" TV
    Screen Resolution
    2560x1440 and 3840x2160
    Hard Drives
    Samsung 980 PRO SSD 1TB PCIe 4.0 NVMe Gen 4 Gaming M.2 (System)
    Samsung 980 PRO SSD 2TB PCIe 4.0 NVMe Gen 4 Gaming M.2 (Games)
    Crucial CT1000MX500SSD1 1TB (More Games)
    WD Green WD20EZRX 2TB (Data/Backup)
    WD Blue WD60EZAZ 6TB (Media)
    PSU
    Rosewill Hive-750S
    Case
    Cooler Master N400 NSE-400-KKN2 Mid-Tower
    Cooling
    Cooler Master ML240L V2 Liquid CPU cooler + 3x120mm in + 2x120mm + Isolated PSU Reverse flow front exhaust
    Mouse
    MSI G20 Elite and Logitech MK345 Wireless
    Keyboard
    Logitech MK345 Wireless
    Internet Speed
    350Mb/s hard wired
    Browser
    Edge
    Antivirus
    Win Def
    Other Info
    Razer Tartarus Gaming Keypad
    MSI GC30 Gaming Controller (Xbox style)
It also seems to be what I classify as spyware as it collects a lot of data and sends it to M.$.
Microsoft Defender for Endpoint collects information from your configured devices and stores it in a customer-dedicated and segregated tenant specific to the service for administration, tracking, and reporting purposes.

Information collected includes file data (file names, sizes, and hashes), process data (running processes, hashes), registry data, network connection data (host IPs and ports), and device details (device identifiers, names, and the operating system version).
That is the problem when you hand pick only what you like or do not like.
It applies for Endpoint and collects those data for the network administrator.

Common users can choose what is sent: disable cloud, samples, smartscreen, etc.
 

My Computer

System One

  • OS
    Windows 11 Home
    Computer type
    PC/Desktop
    CPU
    AMD Ryzen 5 3600 & No fTPM (07/19)
    Motherboard
    MSI B450 TOMAHAWK 7C02v1E & IFX TPM (07/19)
    Memory
    4x 8GB ADATA XPG GAMMIX D10 DDR4 3200MHz CL16
    Graphics Card(s)
    MSI Radeon RX 580 ARMOR 8G OC @48FPS (08/19)
    Sound Card
    Creative Sound Blaster Z (11/16)
    Monitor(s) Displays
    24" Philips 24M1N3200ZS/00 (05/24)
    Screen Resolution
    1920×1080@165Hz via DP1.4
    Hard Drives
    ADATA XPG GAMMIX S11 Pro SSD 512GB (07/19)
    PSU
    Seasonic M12II-520 80 Plus Bronze (11/16)
    Case
    Lian Li PC-7NB & 3x Noctua NF-S12A FLX@700rpm (11/16)
    Cooling
    CPU Cooler Noctua NH-U12S@700rpm (07/19)
    Keyboard
    HP Wired Desktop 320K + Rabalux 76017 Parker (01/24)
    Mouse
    Logitech M330 Silent Plus (04/23)
    Internet Speed
    400/40 Mbps via RouterOS (05/21) & TCP Optimizer
    Browser
    Edge & Brave for YouTube & LibreWolf for FB
    Antivirus
    NoAV & Binisoft WFC & NextDNS
    Other Info
    Backup: Hasleo Backup Suite (PreOS)
    Notifier: Xiaomi Mi Band 7 NFC (05/24)
    Headphones: Sennheiser RS170 (09/10)
    Phone: Samsung Galaxy Xcover 7 (02/24)
    2nd Monitor: AOC G2460VQ6 @75Hz (02/19)
Its like any EDR. It collects data and sends it to the cloud to analyse so you can keep track of possible malware footholds on your PC.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 24H2
    Computer type
    Laptop
    Manufacturer/Model
    HP ZBook G2
    CPU
    Intel® Core i7 5500u
    Motherboard
    HP
    Memory
    8 GB
    Graphics Card(s)
    Intel HD Family Graphics AMD Firepro 4150M
    Sound Card
    Realtek High Audio
    Hard Drives
    1 TB SSD
    Mouse
    HP USB Mouse
    Antivirus
    Zone Alarm Free Antivirus/Zone Alarm Free Firewall NEXT GEN
  • Operating System
    Windows 11 Pro 24H2
    Computer type
    Laptop
    Manufacturer/Model
    HP Zbook G4
    CPU
    Xeon 1535m v6
    Motherboard
    HP
    Memory
    32 GB
    Graphics card(s)
    AMD Quadro Pro 4100
    Sound Card
    Bang and Olufson Audio
    Hard Drives
    1TB SSD
    Mouse
    HP USB Mouse
    Antivirus
    Zone Alarm Free Antivirus/Zone Alarm Free Firewall NEXT GEN
Guys stop, please.

I did not ask for opinions on my question or software reccomendations.

Specifically, I just want to know if I can disable or remove "Microsoft Defender Core service" and if doing so would prevent "Microsoft Defender Antivirus" from working.
 

My Computers

System One System Two

  • OS
    Windroid 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    MSI
    CPU
    Intel Core i9-14900K Raptor Lake Refreshed 6.0 GHZ
    Motherboard
    MSI MAG Z790 Tomahawk WiFi
    Memory
    32GB (2x16) GSKILL Trident Z5 RGB Series (Intel XMP 3.0) DDR5 RAM 6700MT/s
    Graphics Card(s)
    MSI Gaming GeForce RTX 4070 12GB
    Sound Card
    Onboard Realtek® ALC4080 Codec
    Monitor(s) Displays
    Monitor #1 Samsung Odyssey G50A WQHD G-Sync HDR10 Monitor #2 HP LA1911
    Screen Resolution
    2560x1440 and 1280x1024
    Hard Drives
    Samsung 980 PRO SSD 1TB PCIe 4.0 NVMe Gen 4 Gaming M.2 (150GB System / 850GB More Games)
    Crucial CT2000MX500SSD1 2TB (Games)
    Western Digital Green WD40EZRX 4TB (Data/Backup)
    Western Digital Blue WD60EZAZ 6TB (Storage)
    Western Digital Blue WD60EZAZ 6TB (Media)
    PSU
    Rosewill Hive-750S
    Case
    Cooler Master Elite 430 Mid Tower
    Cooling
    Cooler Master ML240L V2 Liquid CPU cooler + 3x120mm in + Isolated PSU Standard upward flow
    Keyboard
    Microsoft Natural Elite White PS/2 (with usb adapter)
    Mouse
    Microsoft D67-00001 Trackball Optical Mouse (rebuilt with ceramic bearings)
    Internet Speed
    350Mb/s hard wired
    Browser
    Edge, FF, Tor
    Antivirus
    Win Def
    Other Info
    Razer Tartarus V2 Gaming Keypad
    Logitech Z-5500 5.1 THX 505w (Orignal 10" Sub with (Fr, Rr, Ctr) Polk Audio satellites
  • Operating System
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    MSI
    CPU
    Intel Core i9-14900K Raptor Lake Refreshed 6.0 GHz FCLGA1700 (Gen 14)
    Motherboard
    MSI MAG Z790 Tomahawk WiFi
    Memory
    32GB (2x16) GSKILL Trident Z5 RGB Series (Intel XMP 3.0) DDR5 RAM 6700MT/s
    Graphics card(s)
    MSI Gaming GeForce RTX 3060Ti 8GB
    Sound Card
    Onboard Realtek® ALC4080 Codec
    Monitor(s) Displays
    Monitor #1 Samsung Odyssey G50A WQHD G-Sync HDR10 Monitor #2 Samsung TU7000 55" TV
    Screen Resolution
    2560x1440 and 3840x2160
    Hard Drives
    Samsung 980 PRO SSD 1TB PCIe 4.0 NVMe Gen 4 Gaming M.2 (System)
    Samsung 980 PRO SSD 2TB PCIe 4.0 NVMe Gen 4 Gaming M.2 (Games)
    Crucial CT1000MX500SSD1 1TB (More Games)
    WD Green WD20EZRX 2TB (Data/Backup)
    WD Blue WD60EZAZ 6TB (Media)
    PSU
    Rosewill Hive-750S
    Case
    Cooler Master N400 NSE-400-KKN2 Mid-Tower
    Cooling
    Cooler Master ML240L V2 Liquid CPU cooler + 3x120mm in + 2x120mm + Isolated PSU Reverse flow front exhaust
    Mouse
    MSI G20 Elite and Logitech MK345 Wireless
    Keyboard
    Logitech MK345 Wireless
    Internet Speed
    350Mb/s hard wired
    Browser
    Edge
    Antivirus
    Win Def
    Other Info
    Razer Tartarus Gaming Keypad
    MSI GC30 Gaming Controller (Xbox style)
MS says"the Microsoft Defender Core service which will help with stability and performance of Microsoft Defender Antivirus"
It's a new service with very little info out there about what it does in the real world experience.
That statement would seem to me to say it's not necessary but beneficial to Defender, but it's in MS speak so one can read into it what they will.
I do not plan to disable mine but if I were to do so, I would disable it. I certainly wouldn't try to uninstall it.
I would not advise you one way or the other so do so at your own risk.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 23H2 22631.3737
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Optiplex 7080
    CPU
    i9-10900 10 core 20 threads
    Motherboard
    DELL 0J37VM
    Memory
    32 gb
    Graphics Card(s)
    none-Intel UHD Graphics 630
    Sound Card
    Integrated Realtek
    Monitor(s) Displays
    Benq 27
    Screen Resolution
    2560x1440
    Hard Drives
    1tb Solidigm m.2 nvme+256gb SKHynix m.2 nvme /External +512gb Samsung m.2 sata+1tb Kingston m2.nvme
    PSU
    500w
    Case
    MT
    Cooling
    Dell Premium
    Keyboard
    Logitech wired
    Mouse
    Logitech wireless
    Internet Speed
    so slow I'm too embarrassed to tell
    Browser
    Firefox
    Antivirus
    Defender+MWB Premium
  • Operating System
    Windows 10 Pro 22H2 19045.3930
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Optiplex 9020
    CPU
    i7-4770
    Memory
    24 gb
    Monitor(s) Displays
    Benq 27
    Screen Resolution
    2560x1440
    Hard Drives
    256 gb Toshiba BG4 M.2 NVE SSB and 1 tb hdd
    PSU
    500w
    Case
    MT
    Cooling
    Dell factory
    Mouse
    Logitech wireless
    Keyboard
    Logitech wired
    Internet Speed
    still not telling
    Browser
    Firefox
    Antivirus
    Defender+MWB Premium
MS says"the Microsoft Defender Core service which will help with stability and performance of Microsoft Defender Antivirus"
It's a new service with very little info out there about what it does in the real world experience.
That statement would seem to me to say it's not necessary but beneficial to Defender, but it's in MS speak so one can read into it what they will.
I do not plan to disable mine but if I were to do so, I would disable it. I certainly wouldn't try to uninstall it.
I would not advise you one way or the other so do so at your own risk.

I agree. And I think there is nothing to be paranoid about.

I did not ask for opinions on my question or software reccomendations.
Nothing wrong with a bit of gratitude.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 23H2 Build: 22631.3593
    Computer type
    PC/Desktop
    Manufacturer/Model
    Sin-built
    CPU
    Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz (4th Gen?)
    Motherboard
    ASUS ROG Maximus VI Formula
    Memory
    32.0 GB of I forget and the box is in storage.
    Graphics Card(s)
    Gigabyte nVidia GeForce GTX 1660 Super OC 6GB
    Sound Card
    Onboard
    Monitor(s) Displays
    4 x LG 23MP75 1 x 24" LG M38H 1 x 32" LF6300 TV Monitor 1 x Wacom Pro 22" Tablet
    Screen Resolution
    All over the place
    Hard Drives
    2 x WD something Something 8TB HDD's / 2 x WD something Something 4TB HDD's / 1 x EVO 1TB SSD / 2 x QVO 1TB SSD's / 1 x EVO 250 GB SSD / 2 x QVO 1TB (External Hub) / 1 x EVO 1TB (Portable Backup Case)
    PSU
    Silverstone 1500
    Case
    NZXT Phantom 820 Full-Tower Case
    Cooling
    Noctua NH-D15 Elite Class Dual Tower CPU Cooler / 6 x EziDIY 120mm / 2 x Corsair 140mm somethings / 1 x 140mm Thermaltake something / 2 x 200mm Corsair.
    Keyboard
    Corsair K95 / Logitech diNovo Edge Wireless
    Mouse
    Logitech G402 / G502 / Mx Masters / MX Air Cordless
    Internet Speed
    100/40Mbps
    Browser
    All sorts
    Antivirus
    Kaspersky Premium
    Other Info
    I’m on a horse.
  • Operating System
    Windows 11 Pro 22621.2215
    Computer type
    Laptop
    Manufacturer/Model
    LENOVO Yoga 7i EVO OLED 14" Touchscreen i5 12 Core 16GB/512GB
    CPU
    Intel Core 12th Gen i5-1240P Processor (1.7 - 4.4GHz)
    Memory
    16GB LPDDR5 RAM
    Graphics card(s)
    Graphics processor is an Intel Iris Xe
    Sound Card
    optimized with Dolby Atmos®
    Screen Resolution
    QHD 2880 x 1800 OLED
    Hard Drives
    M.2 512GB
    Other Info
    …still on a horse.
MS say to keep the Microsoft Defender Core Service running at all times. This is from the first URL posted by the OP.

ms defender core service.png

This doesn't to apply to my PC as I use 3rd party AV/security software (Bitdefender Total Security) so Defender is disabled. The aforementioned service is not in my Windows install by default.

I'm not a fan of MS Defender AV software in Windows 11 so I don't use it.
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Homebuilt
    CPU
    Intel Core i9 13900K
    Motherboard
    Asus ProArt Z790 Creator WiFi - Bios 2002
    Memory
    Corsair Dominator 64gb 5600MT/s DDR5 Dual Channel
    Graphics Card(s)
    Sapphire NITRO+ AMD Radeon RX 7900 XTX Vapor-X 24GB
    Sound Card
    External Fiio K5 Pro ESS DAC - Headphone Amplifier
    Monitor(s) Displays
    Panasonic MX950 Mini LED 55" TV 120hz
    Screen Resolution
    3840 x 2160 120hz
    Hard Drives
    Samsung 980 Pro 2TB (OS)
    Samsung 980 Pro 1TB (Files)
    Lexar NZ790 4TB
    LaCie d2 Professional 6TB external - USB 3.1
    PSU
    Corsair RM1200x Shift
    Case
    Corsair RGB Smart Case 5000x (white)
    Cooling
    Corsair iCue H150i Elite Capellix XT
    Keyboard
    Logitech K860
    Mouse
    Logitech MX Ergo Trackball
    Internet Speed
    Fibre 900/500 Mbps
    Browser
    Microsoft Edge Chromium
    Antivirus
    Bitdefender Total Security
    Other Info
    Logitech Brio 4K Webcam
    Orico 10-port powered USB 3.0 hub
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