Problem with Defender


P

pewe

Member
Local time
12:16 AM
Posts
32
OS
WIndows 11
I have just taken over a PC with Windows 11.
I re-registered it to my MS account and all seems OK - except:
I keep getting a message sayin I should sign in to Windows Defender to stay current BUT it is asking me to sign in using the previous owners details.
How do I reset this to my account.
Any suggestions welcome.
 

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My Computer

System One

  • OS
    WIndows 11
    Computer type
    Laptop
    Manufacturer/Model
    HP
Is the previous owner still there? Look in C:\windows\users and in Settings......Accounts...Other users. You must be logged in as an Admin.
 
Last edited:

My Computers

System One System Two

  • OS
    Windows 11 Pro 24H2 26100.3915
    Computer type
    Laptop
    Manufacturer/Model
    Acer Swift SF114-34
    CPU
    Pentium Silver N6000 1.10GHz
    Memory
    4GB
    Screen Resolution
    1920 x 1080
    Hard Drives
    SSD 2TB
    Cooling
    fanless
    Internet Speed
    150 Mbps
    Browser
    Brave
    Antivirus
    Webroot Secure Anywhere
    Other Info
    System 3

    ASUS T100TA Transformer
    Processor Intel Atom Z3740 @ 1.33GHz
    Installed RAM 2.00 GB (1.89 GB usable)
    System type 32-bit operating system, x64-based processor

    Edition Windows 10 Home
    Version 22H2 build 19045.3570
  • Operating System
    Windows 11 Pro 23H2 22631.2506
    Computer type
    Laptop
    Manufacturer/Model
    HP Mini 210-1090NR PC (bought in late 2009!)
    CPU
    Atom N450 1.66GHz
    Memory
    2GB
    Browser
    Brave
    Antivirus
    Webroot
I am not sure why it’s asking you to sign in to Windows Defender. I’ve never had to do that. The computer is now linked to your Microsoft Account. Defender isn’t account regulated, it’s Windows regulated.

At least that’s how I understand it to be.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 23H2 Build 22631.5039
    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
    5 x LG 25MS500-B - 1 x 24MK430H-B - 1 x Wacom Pro 22" Tablet
    Screen Resolution
    All over the place
    Hard Drives
    Too many to list.
    OS on Samsung 1TB 870 QVO SATA
    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
    1000/400Mbps
    Browser
    All sorts
    Antivirus
    Kaspersky Premium
    Other Info
    I’m on a horse.
  • Operating System
    Windows 11 Pro 23H2 Build: 22631.4249
    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)
    Intel Iris Xe Graphics Processor
    Sound Card
    Optimized with Dolby Atmos®
    Screen Resolution
    QHD 2880 x 1800 OLED
    Hard Drives
    M.2 512GB
    Antivirus
    Defender / Malwarebytes
    Other Info
    …still on a horse.
I think you need to do a clean install of Windows!
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 24H2 26100.3915
    Computer type
    Laptop
    Manufacturer/Model
    Acer Swift SF114-34
    CPU
    Pentium Silver N6000 1.10GHz
    Memory
    4GB
    Screen Resolution
    1920 x 1080
    Hard Drives
    SSD 2TB
    Cooling
    fanless
    Internet Speed
    150 Mbps
    Browser
    Brave
    Antivirus
    Webroot Secure Anywhere
    Other Info
    System 3

    ASUS T100TA Transformer
    Processor Intel Atom Z3740 @ 1.33GHz
    Installed RAM 2.00 GB (1.89 GB usable)
    System type 32-bit operating system, x64-based processor

    Edition Windows 10 Home
    Version 22H2 build 19045.3570
  • Operating System
    Windows 11 Pro 23H2 22631.2506
    Computer type
    Laptop
    Manufacturer/Model
    HP Mini 210-1090NR PC (bought in late 2009!)
    CPU
    Atom N450 1.66GHz
    Memory
    2GB
    Browser
    Brave
    Antivirus
    Webroot
I believe that is the Defender App, you could probably/maybe uninstall it.
Windows Security, (Defender), will continue to work on it's own.
 

My Computers

System One System Two

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    ASUS ROG Strix
  • Operating System
    Windows 11
    Computer type
    Laptop
    Manufacturer/Model
    ASUS VivoBook
Edwin said:
I believe that is the Defender App, you could probably/maybe uninstall it.
Click to expand...

I didn’t know there was one. I am so isolated 😁

pewe, if you don’t want to go to the trouble of reinstalling Windows, you could probably just “reset” it.

www.elevenforum.com

Reset Windows 11 PC

This tutorial will show you how to reset Windows 11 and Remove everything or Keep my files. You can reset Windows 11 when your PC isn’t working well and it’s been a while since you installed an app, driver, or update. Resetting reinstalls Windows 11, but lets you choose whether to keep your...
www.elevenforum.com www.elevenforum.com
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 23H2 Build 22631.5039
    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
    5 x LG 25MS500-B - 1 x 24MK430H-B - 1 x Wacom Pro 22" Tablet
    Screen Resolution
    All over the place
    Hard Drives
    Too many to list.
    OS on Samsung 1TB 870 QVO SATA
    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
    1000/400Mbps
    Browser
    All sorts
    Antivirus
    Kaspersky Premium
    Other Info
    I’m on a horse.
  • Operating System
    Windows 11 Pro 23H2 Build: 22631.4249
    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)
    Intel Iris Xe Graphics Processor
    Sound Card
    Optimized with Dolby Atmos®
    Screen Resolution
    QHD 2880 x 1800 OLED
    Hard Drives
    M.2 512GB
    Antivirus
    Defender / Malwarebytes
    Other Info
    …still on a horse.
Is there not an option in the top right to sign out of the current/old account?

Also, you might have the other MS account linked to other Microsoft apps, such as OneDrive, Office, or Skype.
 

My Computer

System One

  • OS
    Windows 11 Pro x64
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom
Edwin said:
I believe that is the Defender App, you could probably/maybe uninstall it.
Windows Security, (Defender), will continue to work on it's own.
Click to expand...
Thanks - that was the issue. I didn't realise there was a Defenders app seperate to the Windows security system. It seems like it is part of the Office 365 subscription and the previous owner never subscribed to 365 so never signed in to Defender either. When I uninstalled the pre-installed 365 I never knew to unistall Defender seperately. So hopefully it is now gone.

I have another question but will post that seperately.
 

My Computer

System One

  • OS
    WIndows 11
    Computer type
    Laptop
    Manufacturer/Model
    HP
Edwin said:
I believe that is the Defender App, you could probably/maybe uninstall it.
Click to expand...
Indeed, it is most likely previous owner installed it, maybe at the suggestion of MS if he was signed in. Its an app to monitor multiple devices that use MS Defender.

Edit: Absolutely no need to clean install, assuming you know well the person who had it before you.
 
Last edited:

My Computer

System One

  • OS
    Windows 11 Pro 23H2
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo IdeaPad L340
    CPU
    Intel Core i3-8145U
    Memory
    16GB
    Hard Drives
    500 GB M2 1 TB HDD
    Internet Speed
    400 MB
    Browser
    Chrome | Edge
    Antivirus
    Microsoft Defender | Block unknown executables | Various ASR rules enabled | Smart App Control
I would never use a second hand computer without wiping it and reinstalling Windows.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 24H2 26100.3915
    Computer type
    Laptop
    Manufacturer/Model
    Acer Swift SF114-34
    CPU
    Pentium Silver N6000 1.10GHz
    Memory
    4GB
    Screen Resolution
    1920 x 1080
    Hard Drives
    SSD 2TB
    Cooling
    fanless
    Internet Speed
    150 Mbps
    Browser
    Brave
    Antivirus
    Webroot Secure Anywhere
    Other Info
    System 3

    ASUS T100TA Transformer
    Processor Intel Atom Z3740 @ 1.33GHz
    Installed RAM 2.00 GB (1.89 GB usable)
    System type 32-bit operating system, x64-based processor

    Edition Windows 10 Home
    Version 22H2 build 19045.3570
  • Operating System
    Windows 11 Pro 23H2 22631.2506
    Computer type
    Laptop
    Manufacturer/Model
    HP Mini 210-1090NR PC (bought in late 2009!)
    CPU
    Atom N450 1.66GHz
    Memory
    2GB
    Browser
    Brave
    Antivirus
    Webroot

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell XPS 16 9640
    CPU
    Intel Core Ultra 9 185H
    Memory
    32GB LPDDR5x 7467 MT/s
    Graphics Card(s)
    NVIDIA GeForce RTX 4070 8GB GDDR6
    Monitor(s) Displays
    16.3 inch 4K+ OLED Infinity Edge Touch
    Screen Resolution
    3840 x 2400
    Hard Drives
    1 Terabyte M.2 PCIe NVMe SSD
    Cooling
    Vapor Chamber Cooling
    Mouse
    None
    Internet Speed
    960 Mbps Netgear Mesh + 2 Satellites
    Browser
    Microsoft Edge (Chromium) + Bing
    Antivirus
    Microsoft Windows Security (Defender)
    Other Info
    Microsoft 365 subscription
    Microsoft OneDrive 1TB Cloud
    Microsoft Visual Studio
    Microsoft Visual Studio Code
    Microsoft Sysinternals Suite
    Microsoft BitLocker
    Microsoft Copilot
    Macrium Reflect X subscription
    Dell Support Assist
    Dell Command | Update
    1Password Password Manager
    Amazon Kindle for PC
    Lightroom/Photoshop subscription
    Interactive Brokers Trader Workstation
kelper said:
I would never use a second hand computer without wiping it and reinstalling Windows.
Click to expand...
Amen. Or at least a reset and remove everything.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 24H2 26100.3775
    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 drives 512gb Samsung m.2 sata+1tb Kingston m2.nvme+ 4gb Solidigm 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
    #1 Edge #2 Firefox
    Antivirus
    Defender+MWB Premium
  • Operating System
    Windows 11 Pro 24H2 26100.3775
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Optiplex 9020
    CPU
    i7-4770
    Motherboard
    stock Dell
    Memory
    24 gb
    Graphics card(s)
    integrated
    Sound Card
    integrated
    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 too embarrassed to tell
    Browser
    Firefox
    Antivirus
    Defender
glasskuter said:
Amen. Or at least a reset and remove everything.
Click to expand...
If you're going to reset it, might as well do a fresh install, there could be lingering issues with the current installation.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 24H2, Build 26100.4061, Experience Pack 1000.26100.84.0
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Brew
    CPU
    Intel Core i5 14500
    Motherboard
    Gigabyte B760M G P WIFI
    Memory
    64GB DDR4
    Graphics Card(s)
    GeForce RTX 4060
    Sound Card
    Chipset Realtek
    Monitor(s) Displays
    LG 45" Ultragear, Acer 24" 1080p
    Screen Resolution
    5120x1440, 1920x1080
    Hard Drives
    Crucial P310 2TB 2280 PCIe Gen4 3D NAND NVMe M.2 SSD (O/S)
    Silicon Power 2TB US75 Nvme PCIe Gen4 M.2 2280 SSD (backup)
    Crucial BX500 2TB 3D NAND (2nd backup)
    External off-line backup Drives: 2 NVMe 4TB drives in external enclosures
    PSU
    Thermaltake Toughpower GF3 750W
    Case
    LIAN LI LANCOOL 216 E-ATX PC Case
    Cooling
    Lots of fans!
    Keyboard
    Microsoft Comfort Curve 2000
    Mouse
    Logitech G305
    Internet Speed
    Verizon FiOS 1GB
    Browser
    Firefox
    Antivirus
    Malware Bytes & Windows Security
  • Operating System
    Windows 11 Pro 24H2, Build 26100.4061, Experience Pack 1000.26100.84.0
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Brew
    CPU
    Intel Core i5 14400
    Motherboard
    Gigabyte B760M DS3H AX
    Memory
    32GB DDR5
    Graphics card(s)
    Intel 700 Embedded GPU
    Sound Card
    Realtek Embedded
    Monitor(s) Displays
    27" HP 1080p
    Screen Resolution
    1920x1080
    Hard Drives
    Crucial P310 2TB 2280 PCIe Gen4 eD NAND PCIe SSD
    Samsung EVO 990 2TB NVMe Gen4 SSD
    Samsung 2TB SATA SSD
    PSU
    Thermaltake Smart BM3 650W
    Case
    Okinos Micro ATX Case
    Cooling
    Fans
    Mouse
    Logitech G305
    Keyboard
    Microsoft Comfort Curve 2000
    Internet Speed
    Verizon FiOS 1GB
    Browser
    Firefox
    Antivirus
    Malware Bytes & Windows Security
pewe said:
I have just taken over a PC with Windows 11.
Click to expand...
Who owned this computer before you? Someone you know very well? Some 3rd party seller?
 

My Computer

System One

  • OS
    Windows 11 Pro 23H2
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo IdeaPad L340
    CPU
    Intel Core i3-8145U
    Memory
    16GB
    Hard Drives
    500 GB M2 1 TB HDD
    Internet Speed
    400 MB
    Browser
    Chrome | Edge
    Antivirus
    Microsoft Defender | Block unknown executables | Various ASR rules enabled | Smart App Control
oldschool said:
Who owned this computer before you? Someone you know very well? Some 3rd party seller?
Click to expand...
Not sure that makes any difference really. The smart play is to knock it flat and install fresh. If you do a reset anyway, it's not much more trouble to just do a fresh install. You don't have to hang around and watch it do all the gymnastics, just fire off the install and come back when it's done.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 24H2, Build 26100.4061, Experience Pack 1000.26100.84.0
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Brew
    CPU
    Intel Core i5 14500
    Motherboard
    Gigabyte B760M G P WIFI
    Memory
    64GB DDR4
    Graphics Card(s)
    GeForce RTX 4060
    Sound Card
    Chipset Realtek
    Monitor(s) Displays
    LG 45" Ultragear, Acer 24" 1080p
    Screen Resolution
    5120x1440, 1920x1080
    Hard Drives
    Crucial P310 2TB 2280 PCIe Gen4 3D NAND NVMe M.2 SSD (O/S)
    Silicon Power 2TB US75 Nvme PCIe Gen4 M.2 2280 SSD (backup)
    Crucial BX500 2TB 3D NAND (2nd backup)
    External off-line backup Drives: 2 NVMe 4TB drives in external enclosures
    PSU
    Thermaltake Toughpower GF3 750W
    Case
    LIAN LI LANCOOL 216 E-ATX PC Case
    Cooling
    Lots of fans!
    Keyboard
    Microsoft Comfort Curve 2000
    Mouse
    Logitech G305
    Internet Speed
    Verizon FiOS 1GB
    Browser
    Firefox
    Antivirus
    Malware Bytes & Windows Security
  • Operating System
    Windows 11 Pro 24H2, Build 26100.4061, Experience Pack 1000.26100.84.0
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Brew
    CPU
    Intel Core i5 14400
    Motherboard
    Gigabyte B760M DS3H AX
    Memory
    32GB DDR5
    Graphics card(s)
    Intel 700 Embedded GPU
    Sound Card
    Realtek Embedded
    Monitor(s) Displays
    27" HP 1080p
    Screen Resolution
    1920x1080
    Hard Drives
    Crucial P310 2TB 2280 PCIe Gen4 eD NAND PCIe SSD
    Samsung EVO 990 2TB NVMe Gen4 SSD
    Samsung 2TB SATA SSD
    PSU
    Thermaltake Smart BM3 650W
    Case
    Okinos Micro ATX Case
    Cooling
    Fans
    Mouse
    Logitech G305
    Keyboard
    Microsoft Comfort Curve 2000
    Internet Speed
    Verizon FiOS 1GB
    Browser
    Firefox
    Antivirus
    Malware Bytes & Windows Security

My Computers

System One System Two

  • OS
    Windows 11 Pro 24H2, Build 26100.4061, Experience Pack 1000.26100.84.0
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Brew
    CPU
    Intel Core i5 14500
    Motherboard
    Gigabyte B760M G P WIFI
    Memory
    64GB DDR4
    Graphics Card(s)
    GeForce RTX 4060
    Sound Card
    Chipset Realtek
    Monitor(s) Displays
    LG 45" Ultragear, Acer 24" 1080p
    Screen Resolution
    5120x1440, 1920x1080
    Hard Drives
    Crucial P310 2TB 2280 PCIe Gen4 3D NAND NVMe M.2 SSD (O/S)
    Silicon Power 2TB US75 Nvme PCIe Gen4 M.2 2280 SSD (backup)
    Crucial BX500 2TB 3D NAND (2nd backup)
    External off-line backup Drives: 2 NVMe 4TB drives in external enclosures
    PSU
    Thermaltake Toughpower GF3 750W
    Case
    LIAN LI LANCOOL 216 E-ATX PC Case
    Cooling
    Lots of fans!
    Keyboard
    Microsoft Comfort Curve 2000
    Mouse
    Logitech G305
    Internet Speed
    Verizon FiOS 1GB
    Browser
    Firefox
    Antivirus
    Malware Bytes & Windows Security
  • Operating System
    Windows 11 Pro 24H2, Build 26100.4061, Experience Pack 1000.26100.84.0
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Brew
    CPU
    Intel Core i5 14400
    Motherboard
    Gigabyte B760M DS3H AX
    Memory
    32GB DDR5
    Graphics card(s)
    Intel 700 Embedded GPU
    Sound Card
    Realtek Embedded
    Monitor(s) Displays
    27" HP 1080p
    Screen Resolution
    1920x1080
    Hard Drives
    Crucial P310 2TB 2280 PCIe Gen4 eD NAND PCIe SSD
    Samsung EVO 990 2TB NVMe Gen4 SSD
    Samsung 2TB SATA SSD
    PSU
    Thermaltake Smart BM3 650W
    Case
    Okinos Micro ATX Case
    Cooling
    Fans
    Mouse
    Logitech G305
    Keyboard
    Microsoft Comfort Curve 2000
    Internet Speed
    Verizon FiOS 1GB
    Browser
    Firefox
    Antivirus
    Malware Bytes & Windows Security
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