Interaction between Malwarebytes Browser Guard and latest Firefox releases


IanMosley

IanMosley

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Windows 11 Pro 25H2 (Build 26200.8524)
This error manifests itself when using Malwarebytes Browser Guard and Firefox releases post v128.0.3, ie v129.0 and later.

https://support.malwarebytes.com/hc/en-us/articles/4410269415443-Duplicate-blocks-in-Firefox-with-Desktop-Security-for-Window-s-integration-with-Browser-Guard

It happens attempting to login to a site & after hitting the 'Log In' button, nothing happens.

Malwarebytes are working on a fix.

Work around -
  1. Uninstall the MBG addon from Firefox; or,
  2. Use an alternative browser - I've confirmed this - by using MS Edge with the addon installed.
 
Last edited:

My Computer

System One

  • OS
    Windows 11 Pro 25H2 (Build 26200.8524)
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Pro Max Tower T2 FCT2250
    CPU
    Intel Core Ultra 9 285 5.6 GHz
    Motherboard
    64-bit operating system, x64-based processor
    Memory
    32.00 GB
    Graphics Card(s)
    Intel Integrated Graphics (128 MB)
    Sound Card
    Realtek Audio
    Monitor(s) Displays
    Dell P2714H Monitor
    Screen Resolution
    1920 x 1080
    Hard Drives
    1 x 512GB M.2 XG10d SED KIOXIA PCIe solid state drive (Internal)
    1 x 2TB Seagate ST2000DM008-2UB102 HDD (Internal)
    1 x 1TB Seagate STGX4000400 External HDD
    1 x 4TB Seagate STGX4000400 External HDD
    1 x 6TB WD Elements AE 2689 External HDD
    PSU
    500 Watts
    Cooling
    Air
    Keyboard
    Microsoft Wired Keyboard 600
    Mouse
    Microsoft USB Basic Optical Mouse v2.0
    Browser
    Firefox
    Antivirus
    Windows Defender + Malwarebytes Premium
    Other Info
    BaseBoard Manufacturer Dell Inc.
    BaseBoard Product 022RY57
    BaseBoard Version A01

My Computers

System One System Two

  • OS
    Win 11 Home ♦♦♦26200.8457 ♦♦♦♦♦♦♦25H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 5302)
    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 Total 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
    Keyboard
    Logitech Classic Keybooard 200
    Mouse
    Logitech Optical M-BT96a
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 15 years?
Ghot said:
THIS... MBG is not really necessary. Firefox itself it pretty secure.
Click to expand...
. . . you can never have TOO much security.
 

My Computer

System One

  • OS
    Windows 11 Pro 25H2 (Build 26200.8524)
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Pro Max Tower T2 FCT2250
    CPU
    Intel Core Ultra 9 285 5.6 GHz
    Motherboard
    64-bit operating system, x64-based processor
    Memory
    32.00 GB
    Graphics Card(s)
    Intel Integrated Graphics (128 MB)
    Sound Card
    Realtek Audio
    Monitor(s) Displays
    Dell P2714H Monitor
    Screen Resolution
    1920 x 1080
    Hard Drives
    1 x 512GB M.2 XG10d SED KIOXIA PCIe solid state drive (Internal)
    1 x 2TB Seagate ST2000DM008-2UB102 HDD (Internal)
    1 x 1TB Seagate STGX4000400 External HDD
    1 x 4TB Seagate STGX4000400 External HDD
    1 x 6TB WD Elements AE 2689 External HDD
    PSU
    500 Watts
    Cooling
    Air
    Keyboard
    Microsoft Wired Keyboard 600
    Mouse
    Microsoft USB Basic Optical Mouse v2.0
    Browser
    Firefox
    Antivirus
    Windows Defender + Malwarebytes Premium
    Other Info
    BaseBoard Manufacturer Dell Inc.
    BaseBoard Product 022RY57
    BaseBoard Version A01
IanMosley said:
. . . you can never have TOO much security.
Click to expand...


Well... yeah ya can.

I use Firefox with zero add-ons (extensions). I've never had a problem, even though I don't surf carefully.
Plus... I'm sure you use backup software, so... "no worries mate". :-)

Don't get me wrong... every AV or AM software I've ever seen, wants to install browser add-ons.
I just ignore them.


Bitdefender AV/firewall has 13 modules.
I use the 3 in the RED boxes. The rest are a waste of time and cause more trouble than they're worth.

000000 Bitdefender Modules.png
 
Last edited:

My Computers

System One System Two

  • OS
    Win 11 Home ♦♦♦26200.8457 ♦♦♦♦♦♦♦25H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 5302)
    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 Total 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
    Keyboard
    Logitech Classic Keybooard 200
    Mouse
    Logitech Optical M-BT96a
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 15 years?
I agree with @Ghot. I'm a huge fan of my MWB Premium, but like most other companies, they attempt to push add-ons I neither want or need slowing down my browser. Just because they push them doesn't mean it's always right for every user. I don't do addons (except Roboform) and am very careful which sites I open from my web search and even more careful when opening links in sites I visit. I tried BG and found it to be intrusive and unnecessary....for me.

IanMosley said:
you can never have TOO much security.
Click to expand...
One can have all the security in the world but the ultimate security is the awareness of the user. For folks who don't pay attention to the sites they click on, I can see it's benefit. And I know a lot of people who need it because some folks never learn.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 25H2
    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
    2x1tb Solidigm m.2 nvme /External drives 512gb Samsung m.2 sata+2tb 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
    #1 Edge #2 Firefox
    Antivirus
    Defender+MWB Premium
  • Operating System
    Windows 11 Pro 24H2 26200.8457
    Computer type
    PC/Desktop
    Manufacturer/Model
    Beelink Mini PC SER5
    CPU
    AMD Ryzen 7 6800U
    Memory
    32 gb
    Graphics card(s)
    integrated
    Sound Card
    integrated
    Monitor(s) Displays
    Benq 27
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Crucial nvme
    Keyboard
    Logitech wired
    Mouse
    Logitech wireless
    Internet Speed
    still too embarrassed to tell
    Browser
    Firefox
    Antivirus
    Defender
    Other Info
    System 3 is non compliant Dell 9020 i7-4770/24gb ram Win11 PRO 26200.8457
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