Solved Firefox Downloads failing, unable to delete Downloads history and shows popup at every launch


wiganken

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Firefox v142.0
Using Firefox I tried 3 times to download an app update file but it failed each time. By 'failed' I mean it tried to download the file but the downloaded file was zero bytes and would not launch. I had to use Vivaldi browser to download the file and it worked. A Firefox 'Download' problem?

Although the app update failed to download using FF the app download still shows in FF 'Downloads' list and a Download popup appears at every launch of Firefox.
This happens even though I have clicked on 'Clear Downloads' and it disappears from the screen but it reappears at next FF launch session. I have also tried 'Delete' downloads as well but same result.
I have cleared Browsing and Download history' but it still happens.

Is anyone else seeing this behaviour? Is there a workaround/fix?

Downloads.webp

Glow.webp

Clear Browsing Data.webp
 
Last edited:

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Hi.

Possibly a bug needed to be fixed by Mozilla.

Try disabling the Download Panel Popup
This stops the panel from appearing every time Firefox launches:
  1. In the Firefox address bar, type :
    about:config
  2. Accept the warning to proceed.
  3. In the search box, enter:
    browser.download.alwaysOpenPanel
  4. Toggle the setting to false.

This won’t remove the download entry itself, but it should suppress the popup panel from auto-opening.
 

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Thanks. I set it to false but the popup still shows at each launch of FF.

About.webp
 

My Computers My Computers

System One System Two

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    GMKtec K11
    CPU
    AMD Ryzen 9 8945HS
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    32GB DDR5 SO-DIMM
    Graphics Card(s)
    Integrated AMD Radeon 780M (4.00 GHz)
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    Benq 2250HM
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    1920 x 1080
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    1 TB PCIe 4.0 NVMe M.2 SSD
  • Operating System
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    ASUS Zenbook 14 OLED 14" Laptop - UX3405CA-QL192W
    CPU
    Intel® Core™ Ultra 7 - 255H processor
    Memory
    16 GB LPDDR5 SDRAM
    Graphics card(s)
    Intel Arc 140T onboard graphics
    Screen Resolution
    1920 x 1200 (16:10 WUXGA resolution) OLED Touchscreen
    Hard Drives
    1TB SSD
Really?
I’d wait for the next update before starting a new profile, which will most likely be suggested.
 

My Computers My Computers

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  • OS
    Windows 11 Pro 25H2 Build 26200.8655
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    PC/Desktop
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    Sin-built 2013
    CPU
    Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz
    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 thingy
    Monitor(s) Displays
    5 x LG 25MS500-B - 1 x 24MK430H-B - 1 x Wacom Pro 22" Touch Screen 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
    2000/500Mbps
    Browser
    All sorts
    Antivirus
    Kaspersky Premium
    Other Info
    ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
    TP-Link BE9300 WiFi 7 Bluetooth 5.4 (Archer TBE550E)
    TP-Link TX201 V1 2.5GB Lan

    Grandstream HT812 - VoIP
    ASUS DSL-AX82U - Mesh
    ASUS RT-AC68U - Mesh
    ASUS RT-BE88U Router

    Brother MFC-L2880DW Printer

    I’m on a horse.
  • Operating System
    Windows 11 Pro 25H2 Build 26200.8655
    Computer type
    Laptop
    Manufacturer/Model
    LENOVO Yoga 7 14IRL8 - 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.
0.webp

1.webp

3.webp


about:config
browser.sessionstore.resume_from_crash true -> false
browser.sessionstore.max_resumed_crashes 1->0
 

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Microsoft Windows 11 Home
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MSI MS-7D98
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2 x 16 Patriot Memory (PDP Systems) PSD516G560081 6400MT (32-37-37-74); 1.35V)
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https://www.userbenchmark.com/UserRun/66553205
I downloaded it fine using FF 142.0 however I initially get a Warning that you need to "Allow Download":
 

Attachments

  • FF Download.webp
    FF Download.webp
    9.2 KB · Views: 1

My Computer My Computer

OS
Win 7/10/11
Computer type
PC/Desktop
Other Info
I'm a computer enthusiast so have quite a few systems that I run. More like an advanced hobby.
about:config
browser.sessionstore.resume_from_crash true -> false
browser.sessionstore.max_resumed_crashes 1->0
Thanks but these settings didn't work either. The popup happens every time I launch FF.
It's not a major problem. It's Just annoying. A single click anywhere on FF windows makes it disappear.
 

My Computers My Computers

System One System Two

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    GMKtec K11
    CPU
    AMD Ryzen 9 8945HS
    Memory
    32GB DDR5 SO-DIMM
    Graphics Card(s)
    Integrated AMD Radeon 780M (4.00 GHz)
    Monitor(s) Displays
    Benq 2250HM
    Screen Resolution
    1920 x 1080
    Hard Drives
    1 TB PCIe 4.0 NVMe M.2 SSD
  • Operating System
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    ASUS Zenbook 14 OLED 14" Laptop - UX3405CA-QL192W
    CPU
    Intel® Core™ Ultra 7 - 255H processor
    Memory
    16 GB LPDDR5 SDRAM
    Graphics card(s)
    Intel Arc 140T onboard graphics
    Screen Resolution
    1920 x 1200 (16:10 WUXGA resolution) OLED Touchscreen
    Hard Drives
    1TB SSD
I initially get a Warning that you need to "Allow Download"
There is no prompt for me to 'Allow download'.
I tried downloading the same file again twice. Once from github and then direct from the developer's website. Both times the download was zero bytes?
As an experiment I downloaded @abactuon DriverStoreExplorer zip file and that downloaded correctly at 1MB so it seems that the Glow zip file is faulty.
Seems that Downloading in general is okay. It is the Downloads library that is retaining the download history and the Downloads popup still happens every time FF launches.

Edit: -
After I downloaded the valid DriverStoreExplorer zip file I then 'Cleared' the download library list, closed FF and relaunched it and hey presto it worked. The Downloads library list remains empty and the popup no longer happens when FF launches.
I think that the 'Clear Downloads' function can't work if the downloaded files are all zero bytes. There is nothing for it to delete so it can't delete 'nothing'. Having 1 file in there that has a file size above 0 bytes allows it to work and clears the library correctly.

Solved.

Downloads library.webp
 
Last edited:

My Computers My Computers

System One System Two

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    GMKtec K11
    CPU
    AMD Ryzen 9 8945HS
    Memory
    32GB DDR5 SO-DIMM
    Graphics Card(s)
    Integrated AMD Radeon 780M (4.00 GHz)
    Monitor(s) Displays
    Benq 2250HM
    Screen Resolution
    1920 x 1080
    Hard Drives
    1 TB PCIe 4.0 NVMe M.2 SSD
  • Operating System
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    ASUS Zenbook 14 OLED 14" Laptop - UX3405CA-QL192W
    CPU
    Intel® Core™ Ultra 7 - 255H processor
    Memory
    16 GB LPDDR5 SDRAM
    Graphics card(s)
    Intel Arc 140T onboard graphics
    Screen Resolution
    1920 x 1200 (16:10 WUXGA resolution) OLED Touchscreen
    Hard Drives
    1TB SSD
Here is what I show after it's downloaded:

Glow Zip Contents.webp
 

My Computer My Computer

OS
Win 7/10/11
Computer type
PC/Desktop
Other Info
I'm a computer enthusiast so have quite a few systems that I run. More like an advanced hobby.
Do you not see the small blue circle with the exclamation in it? That is a warning. Click that and you will see more info. It's clearly in the original images you attached.
 

My Computer My Computer

OS
Win 7/10/11
Computer type
PC/Desktop
Other Info
I'm a computer enthusiast so have quite a few systems that I run. More like an advanced hobby.
Do you not see the small blue circle with the exclamation in it?
Yes, I did see it but clicking it told me nothing.
Also, I don't know why FF could not download the Glow zip file correctly when it downloaded fine using Vivaldi. This tells me that the source Glow zip file must be okay but FF could not download it correctly. Why?
Maybe there is a downloading bug in FF but if there is then it is a random thing because FF downloaded the DriverStoreExplorer zip file okay.
 

My Computers My Computers

System One System Two

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    GMKtec K11
    CPU
    AMD Ryzen 9 8945HS
    Memory
    32GB DDR5 SO-DIMM
    Graphics Card(s)
    Integrated AMD Radeon 780M (4.00 GHz)
    Monitor(s) Displays
    Benq 2250HM
    Screen Resolution
    1920 x 1080
    Hard Drives
    1 TB PCIe 4.0 NVMe M.2 SSD
  • Operating System
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    ASUS Zenbook 14 OLED 14" Laptop - UX3405CA-QL192W
    CPU
    Intel® Core™ Ultra 7 - 255H processor
    Memory
    16 GB LPDDR5 SDRAM
    Graphics card(s)
    Intel Arc 140T onboard graphics
    Screen Resolution
    1920 x 1200 (16:10 WUXGA resolution) OLED Touchscreen
    Hard Drives
    1TB SSD
It is part of Firefox security which you can override by allowing the download.
Click on the download in the firefox popup download window and you will get download details.
One is allow the download.

Screenshot 2025-08-22 071801.webp

If you are in download history click on the icon that looks like a folder and then you get these options.

d.webp

Screenshot 2025-08-22 072318.webp
 
Last edited:

My Computer My Computer

OS
Windows 11 Pro
Thanks. I set it to false but the popup still shows at each launch of FF.
You should set that back to true or the download panel will never appear for any download.
All you will have is the icon.
 

My Computer My Computer

OS
Windows 11 Pro
I've run firefox for many years, now with win11 it runs VERY slow on different PCs. Really have come to believe that Microsoft put a whammy on it to force us all into MS Edge or whatever they desire.
 

My Computer My Computer

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win11
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PC/Desktop
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ASUS
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i5-4570 CPU @ 3.20GHz 3.20 GHz
Motherboard
Intel(R) Core(TM)
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Installed RAM 32.0 GB
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NVIDIA GeForce GTX 650
Sound Card
NVIDIA High Definition Audio
Monitor(s) Displays
ACER
Screen Resolution
1920x1080
Hard Drives
CT2000BX500SSD1
PSU
I don't know & not opening PC to find out
Case
Mid size, I refuse to switch to the new models.
Cooling
ACPI Fan
Keyboard
Standard PS/2 keyboard
Mouse
HID compliant optical wheel mouse
Internet Speed
179.25 mps
Browser
Chrome & Fire Fox
Antivirus
Windows Security that comes with win11
Other Info
After paying someone to install win11 on my older desktop because I don't want to lose my extra drives, I hate win 11, looking for ways to changes things back the way I want. Only upgraded because it kept telling me all of a sudden things wouldn't run well, security reasons.. etc... But now I'm sorry I did that.. and not liking MIcrosoft any longer. They should have & probably still could come up with a way to roll things back for us at/home users.. that don't want all the extra garbage.
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