can't defeat "SmartScreen"


larrydonline

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Windows 11
I've followed one of the tutorials (there are several) for turning SmartScreen off so I can run a program but I continue to get "Microsoft Defender SmartScreen prevented an unrecognized program". Malwarebytes currently says "Real-Time Protection turned off". "Reputation-based protection" in Windows Security is turned off. System was rebooted and those settings remain.

What else can I do to run "K-Lite_Codec_Pack_1802_Full" downloaded from K-Lite's website? K-lite says it's a Beta program so there probably aren't a lot of downloads yet. There was no problem in downloading it I just can't install it. Help.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell 8950
    CPU
    12th Gen Intel(R) Core(TM) i9-12900K 3.20 GHz
    Motherboard
    0DYKKV A00
    Memory
    65262 Megabytes Usable Installed Memory
    Graphics Card(s)
    NVIDIA GeForce RTX 3070
    Sound Card
    Multimedia Intel(R) Display Audio NVIDIA High Definition Audio NVIDIA Virtual Audio Device (Wave Extensible) (WDM) Realtek(R) Audio WsAudio_Device
    Monitor(s) Displays
    Dell
    Mouse
    Logitech
    Internet Speed
    D/L 120 mbps
    Browser
    Firefox
    Antivirus
    Malwarebytes
I've followed one of the tutorials (there are several) for turning SmartScreen off so I can run a program but I continue to get "Microsoft Defender SmartScreen prevented an unrecognized program". Malwarebytes currently says "Real-Time Protection turned off". "Reputation-based protection" in Windows Security is turned off. System was rebooted and those settings remain.

What else can I do to run "K-Lite_Codec_Pack_1802_Full" downloaded from K-Lite's website? K-lite says it's a Beta program so there probably aren't a lot of downloads yet. There was no problem in downloading it I just can't install it. Help.



 

My Computers

System One System Two

  • OS
    Win 11 Home ♦♦♦22631.3447 ♦♦♦♦♦♦♦23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 4702)
    Memory
    G.Skill (F4-3200C14D-16GTZKW)
    Graphics Card(s)
    EVGA RTX 2070 (08G-P4-2171-KR)
    Sound Card
    Realtek ALC1220P / ALC S1220A
    Monitor(s) Displays
    Dell U3011 30"
    Screen Resolution
    2560 x 1600
    Hard Drives
    2x Samsung 860 EVO 500GB,
    WD 4TB Black FZBX - SATA III,
    WD 8TB Black FZBX - SATA III,
    DRW-24B1ST CD/DVD Burner
    PSU
    PC Power & Cooling 750W Quad EPS12V
    Case
    Cooler Master ATCS 840 Tower
    Cooling
    CM Hyper 212 EVO (push/pull)
    Keyboard
    Ducky DK9008 Shine II Blue LED
    Mouse
    Logitech Optical M-100
    Internet Speed
    300/300
    Browser
    Firefox (latest)
    Antivirus
    Bitdefender Internet Security
    Other Info
    Speakers: Klipsch Pro Media 2.1
  • Operating System
    Windows XP Pro 32bit w/SP3
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® (not in use)
    CPU
    AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)
    Motherboard
    ASUS M2N32-SLI Deluxe Wireless Edition
    Memory
    TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)
    Graphics card(s)
    EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Sound Card
    Onboard
    Monitor(s) Displays
    ViewSonic G90FB Black 19" Professional (CRT)
    Screen Resolution
    up to 2048 x 1536
    Hard Drives
    WD 36GB 10,000rpm Raptor SATA
    Seagate 80GB 7200rpm SATA
    Lite-On LTR-52246S CD/RW
    Lite-On LH-18A1P CD/DVD Burner
    PSU
    PC Power & Cooling Silencer 750 Quad EPS12V
    Case
    Generic Beige case, 80mm fans
    Cooling
    ZALMAN 9500A 92mm CPU Cooler
    Mouse
    Logitech Optical M-BT96a
    Keyboard
    Logitech Classic Keybooard 200
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 13 years?
I've followed one of the tutorials (there are several) for turning SmartScreen off so I can run a program but I continue to get "Microsoft Defender SmartScreen prevented an unrecognized program".
Use a browser other than Edge.
 

My Computer

System One

  • OS
    Windows 10
Hello Larry, :alien:

In addition, check to see if disabling using below may help.




 

My Computers

System One System Two

  • OS
    Windows 11 Pro for Workstations
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom self build
    CPU
    Intel i7-8700K 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 (11GB GDDR5X)
    Sound Card
    Integrated Digital Audio (S/PDIF)
    Monitor(s) Displays
    2 x Samsung Odyssey G75 27"
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Samsung 990 PRO M.2,
    4TB Samsung 990 PRO M.2,
    8TB WD MyCloudEX2Ultra NAS
    PSU
    Seasonic Prime Titanium 850W
    Case
    Thermaltake Core P3 wall mounted
    Cooling
    Corsair Hydro H115i
    Keyboard
    Logitech wireless K800
    Mouse
    Logitech MX Master 3
    Internet Speed
    1 Gbps Download and 35 Mbps Upload
    Browser
    Google Chrome
    Antivirus
    Microsoft Defender and Malwarebytes 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
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    HP Spectre x360 2in1 14-eu0098nr (2024)
    CPU
    Intel Core Ultra 7 155H 4.8 GHz
    Memory
    16 GB LPDDR5x-7467 MHz
    Graphics card(s)
    Integrated Intel Arc
    Sound Card
    Poly Studio
    Monitor(s) Displays
    14" 2.8K OLED multitouch
    Screen Resolution
    2880 x 1800
    Hard Drives
    2 TB PCIe NVMe M.2 SSD
    Internet Speed
    Intel Wi-Fi 7 BE200 (2x2) and Bluetooth 5.4
    Browser
    Chrome and Edge
    Antivirus
    Windows Defender and Malwarebytes Premium
What else can I do to run "K-Lite_Codec_Pack_1802_Full" downloaded from K-Lite's website? K-lite says it's a Beta program so there probably aren't a lot of downloads yet. There was no problem in downloading it I just can't install it. Help.
The K-Lite codecs package has been around for a very long time. I have used it for years, I have never encountered this problem.

Download the stable (non-beta) version 18.0.0 from
 

My Computer

System One

  • OS
    Windows 10
Thanks, Brink, but I've followed all those steps with no change. This time I ran the reg fix too. Still get "Microsoft Defender SmartScreen prevented an unrecog..." That's all I can read in the small window from Microsoft Defender and there's no way to blow it up to a bigger window. However, the rest seems logical. Everything that needs to be off or disabled is turned off, still no joy. More help I hope.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell 8950
    CPU
    12th Gen Intel(R) Core(TM) i9-12900K 3.20 GHz
    Motherboard
    0DYKKV A00
    Memory
    65262 Megabytes Usable Installed Memory
    Graphics Card(s)
    NVIDIA GeForce RTX 3070
    Sound Card
    Multimedia Intel(R) Display Audio NVIDIA High Definition Audio NVIDIA Virtual Audio Device (Wave Extensible) (WDM) Realtek(R) Audio WsAudio_Device
    Monitor(s) Displays
    Dell
    Mouse
    Logitech
    Internet Speed
    D/L 120 mbps
    Browser
    Firefox
    Antivirus
    Malwarebytes
I took Anibor 11's advice and installed the latest non-beta version. Still annoying that I can't defeat SmartScreen.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell 8950
    CPU
    12th Gen Intel(R) Core(TM) i9-12900K 3.20 GHz
    Motherboard
    0DYKKV A00
    Memory
    65262 Megabytes Usable Installed Memory
    Graphics Card(s)
    NVIDIA GeForce RTX 3070
    Sound Card
    Multimedia Intel(R) Display Audio NVIDIA High Definition Audio NVIDIA Virtual Audio Device (Wave Extensible) (WDM) Realtek(R) Audio WsAudio_Device
    Monitor(s) Displays
    Dell
    Mouse
    Logitech
    Internet Speed
    D/L 120 mbps
    Browser
    Firefox
    Antivirus
    Malwarebytes
Responding to Porthos comment, I don't use Edge I use Firefox. But it seems Edge is part of the operating system in Windows now. You have to go through it only, to get some things done. The settings you used to access through Internet Explorer are now part of Edge. I think I clicked a link in settings and it opened in Edge which was confusing.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell 8950
    CPU
    12th Gen Intel(R) Core(TM) i9-12900K 3.20 GHz
    Motherboard
    0DYKKV A00
    Memory
    65262 Megabytes Usable Installed Memory
    Graphics Card(s)
    NVIDIA GeForce RTX 3070
    Sound Card
    Multimedia Intel(R) Display Audio NVIDIA High Definition Audio NVIDIA Virtual Audio Device (Wave Extensible) (WDM) Realtek(R) Audio WsAudio_Device
    Monitor(s) Displays
    Dell
    Mouse
    Logitech
    Internet Speed
    D/L 120 mbps
    Browser
    Firefox
    Antivirus
    Malwarebytes
@larrydonline

I just use Winaero Tweaker to disable it...


If a setting in Winaero requires a reboot... it will tell you in the lower left corner.


Image1.png


I also use Firefox. I have EDGE blocked in my Bitdefender firewall.
I only "allow" EDGE temporarily if some website requires it.

For me Smart Screen seems to stay disabled.
I'm guessing EDGE might be turning it back ON for you?
 
Last edited:

My Computers

System One System Two

  • OS
    Win 11 Home ♦♦♦22631.3447 ♦♦♦♦♦♦♦23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 4702)
    Memory
    G.Skill (F4-3200C14D-16GTZKW)
    Graphics Card(s)
    EVGA RTX 2070 (08G-P4-2171-KR)
    Sound Card
    Realtek ALC1220P / ALC S1220A
    Monitor(s) Displays
    Dell U3011 30"
    Screen Resolution
    2560 x 1600
    Hard Drives
    2x Samsung 860 EVO 500GB,
    WD 4TB Black FZBX - SATA III,
    WD 8TB Black FZBX - SATA III,
    DRW-24B1ST CD/DVD Burner
    PSU
    PC Power & Cooling 750W Quad EPS12V
    Case
    Cooler Master ATCS 840 Tower
    Cooling
    CM Hyper 212 EVO (push/pull)
    Keyboard
    Ducky DK9008 Shine II Blue LED
    Mouse
    Logitech Optical M-100
    Internet Speed
    300/300
    Browser
    Firefox (latest)
    Antivirus
    Bitdefender Internet Security
    Other Info
    Speakers: Klipsch Pro Media 2.1
  • Operating System
    Windows XP Pro 32bit w/SP3
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® (not in use)
    CPU
    AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)
    Motherboard
    ASUS M2N32-SLI Deluxe Wireless Edition
    Memory
    TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)
    Graphics card(s)
    EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Sound Card
    Onboard
    Monitor(s) Displays
    ViewSonic G90FB Black 19" Professional (CRT)
    Screen Resolution
    up to 2048 x 1536
    Hard Drives
    WD 36GB 10,000rpm Raptor SATA
    Seagate 80GB 7200rpm SATA
    Lite-On LTR-52246S CD/RW
    Lite-On LH-18A1P CD/DVD Burner
    PSU
    PC Power & Cooling Silencer 750 Quad EPS12V
    Case
    Generic Beige case, 80mm fans
    Cooling
    ZALMAN 9500A 92mm CPU Cooler
    Mouse
    Logitech Optical M-BT96a
    Keyboard
    Logitech Classic Keybooard 200
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 13 years?
That's all I can read in the small window from Microsoft Defender
Hold down Windows key + Plus (+) to activate the screen magnifier.
Hold Windows + Plus (+) or Minus (-) to control the magnification.
Hold Windows + ESC to quit the magnifier.

Go to your downloaded file and right click on the file and select properties, then checkmark Unblock. Fingers crossed that may help?
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    CPU
    Ryzen 9 3900X
    Motherboard
    ASUS ROG Strix X570-E Gaming
    Memory
    G-Skill RipjawsV F4-3600C18 (16GB x 2)
    Graphics Card(s)
    Gigabyte RX 5700 XT Gaming OC
    Sound Card
    Realtek ALC1220P
    Monitor(s) Displays
    ASUS VE278 (x 2)
    Screen Resolution
    1920x1080
    Hard Drives
    Samsung 850 Pro 256GB
    Samsung 970 Pro NVMe 512GB (x 2)
    ST10000VN0004 10TB (x 2)
    ST10000VN0008 10TB (x 2)
    ST4000VN000 4TB (x 2)
    PSU
    Corsair HX1000
    Case
    Corsair Carbide 400R
    Cooling
    AMD Wraith Prism (Stock)
    Keyboard
    Logitech G213
    Mouse
    Logitech G502
    Internet Speed
    100Mbps down / 40Mbps up
    Browser
    Firefox - Chrome - Edge
    Antivirus
    Windows Defender - Clamwin
Have you also disabled Smart App control, it works with smartscreen.
As for smartscreen, you can just kill it.
Code:
takeown /s %computername% /u %username% /f "%WinDir%\System32\smartscreen.exe"
icacls "%WinDir%\System32\smartscreen.exe" /grant:r %username%:F
taskkill /im smartscreen.exe /f
del "%WinDir%\System32\smartscreen.exe" /s /f /q
 

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" AOC G2460VQ6 (01/19)
    Screen Resolution
    1920×1080@75Hz & FreeSync (DisplayPort)
    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 (No FB/Google) & Brave for YouTube & LibreWolf for FB
    Antivirus
    NoAV & Binisoft WFC & NextDNS
    Other Info
    Headphones: Sennheiser RS170 (09/10)
    Phone: Samsung Galaxy Xcover 7 (02/24)
I'll try that TairikuOkami. Thanks.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell 8950
    CPU
    12th Gen Intel(R) Core(TM) i9-12900K 3.20 GHz
    Motherboard
    0DYKKV A00
    Memory
    65262 Megabytes Usable Installed Memory
    Graphics Card(s)
    NVIDIA GeForce RTX 3070
    Sound Card
    Multimedia Intel(R) Display Audio NVIDIA High Definition Audio NVIDIA Virtual Audio Device (Wave Extensible) (WDM) Realtek(R) Audio WsAudio_Device
    Monitor(s) Displays
    Dell
    Mouse
    Logitech
    Internet Speed
    D/L 120 mbps
    Browser
    Firefox
    Antivirus
    Malwarebytes
Disabling Smartscreen in Edge is one thing, disabling system-wide Smartscreen is not very sound advice. Smartscreen for Explorer is more than protection from an anti-phishing list, it also performs a reputation check for files and more. A smart developer has created Run By Smartscreen, which can be used in place of Explorer's right-click "Run as Adminstrator" to extend Smartscreen protection beyond Explorer.
It is based on a very simple idea to open/run safely the new files, when using right-click Explorer context menu. It covers in a smart way file opening in the User Space ( = everything outside %WinDir%, %ProgramFiles%, and %ProgramFiles(x86)% ). This program can manage files in the User Space, as follows:

  1. Run/check executables with SmartScreen.
  2. Block files with potentially dangerous extensions.
  3. Open vulnerable files with the warning instruction.
  4. Prevent DLL hijacking of EXE files.
  5. Safe files are run/opened without warnings.
Advanced users can apply 'Run By SmartScreen' for EXE and MSI installers (from sources not supported by SmartScreen) to force the SmartScreen check. Not Advanced users should consistently use 'Run By SmartScreen' for all new files.
[Smartscreen] is only halfway adopted in Windows. SmartScreen for Explorer can check executables with the "Mark of the Web", which is attached to files after downloading from the Internet by popular Web Browsers, Windows Store, or Windows OneDrive. There are many cases when files do not have a "Mark of the Web", and then SmartScreen Filter simply ignores them on the run
More Smartscreen info:
Microsoft Defender SmartScreen overview - Windows Security
How to gain Smart Screen reputation and avoid Smart Screen filter warnings
What is Windows Defender SmartScreen?
 

My Computer

System One

  • OS
    Windows 11 Pro 23H2
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo IdeaPad L340
    CPU
    Intel Core i3-8145U
    Memory
    8GB
    Internet Speed
    45MB
    Browser
    Firefox | Chrome
    Antivirus
    Microsoft Defender | Block unknown executables | Various ASR rules enabled

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