Latest Win10 update has blocked Firefox as default browser, locked Edg Solved

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  1.    #1

    Latest Win10 update has blocked Firefox as default browser, locked Edg


    The morning of May 25th 2019 Pacific Time Microsoft locked in MS Edge as a default browser in Windows 10 on my computer.

    My system shows 2019-05 Cumulative Update for Windows 10 version 1809 for x64-based Systems (KB4494441) successfully installed on 5/23/2019 (yet yesterday, 5/24 Firefox was still my default browser)

    Please read the following methods to see how they did it. Bottom line: Firefox, Chrome or any other browser are not recognized by Windows 10.

    Settings>default apps>web browser
    Microsoft Edge or "Look for app in Microsoft Store" (of course neither Firefox nor Chrome nor IE11 are listed there)

    Settings>default apps>"choose default apps by protocol"
    HTTP and HTTPS are locked in by MS Edge, no way to change

    Settings>default apps>"set defaults by app"
    Firefox nor Google Chrome nor IE11 are listed

    Does anyone have a fix. What can we do?
      My ComputerSystem Spec

  2.    #2

    Can you force it from within Firefox. Click 3 bar menu upper R corner/Options. See if you can check "Always check if Firefox is your default browser" box and set Firefox as default. Good Luck.
      My ComputerSystem Spec


  3. Posts : 703
    Microsoft Windows 10 Pro 64-bit
       #3

    I would uninstall Firefox and reboot then reinstall it, I'm personally going to wait about a month before installing 1903 and when I do I will more that likely do a clean install from scratch.
      My ComputerSystem Spec

  4.    #4

    I'm not sure what this will tell you since this problem has nothing to do with IP or Internet. The problem is a Win10 update that locked in MS Edge.

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : DBC-XPS8930
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No

    Ethernet adapter Ethernet:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Killer E2400 Gigabit Ethernet Controller
    Physical Address. . . . . . . . . : B8-85-84-B2-E9-DF
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    IPv6 Address. . . . . . . . . . . : 2600:8801:d80:33f0:8951:f30:9510:36f4(Preferred)
    Temporary IPv6 Address. . . . . . : 2600:8801:d80:33f0:a847:c730:d54f:c5d8(Preferred)
    Link-local IPv6 Address . . . . . : fe80::8951:f30:9510:36f4%2(Preferred)
    IPv4 Address. . . . . . . . . . . : 192.168.0.6(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Saturday, May 25, 2019 10:09:43 PM
    Lease Expires . . . . . . . . . . : Saturday, May 25, 2019 11:09:42 PM
    Default Gateway . . . . . . . . . : fe80::5e8f:e0ff:fe2c:74fc%2
    192.168.0.1
    DHCP Server . . . . . . . . . . . : 192.168.0.1
    DHCPv6 IAID . . . . . . . . . . . : 45647236
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-23-F8-42-20-B8-85-84-B2-E9-DF
    DNS Servers . . . . . . . . . . . : 2001:578:3f::30
    2001:578:3f:1::30
    68.105.28.11
    68.105.29.11
    68.105.28.12
    2001:578:3f::30
    2001:578:3f:1::30
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Wireless LAN adapter Wi-Fi:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Qualcomm QCA9377 802.11ac Wireless Adapter
    Physical Address. . . . . . . . . : 48-5F-99-B8-1E-53
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Wireless LAN adapter Local Area Connection* 3:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter #3
    Physical Address. . . . . . . . . : 4A-5F-99-B8-1E-53
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Wireless LAN adapter Local Area Connection* 4:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter #4
    Physical Address. . . . . . . . . : 5A-5F-99-B8-1E-53
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Ethernet adapter Bluetooth Network Connection:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
    Physical Address. . . . . . . . . : 48-5F-99-B8-1E-54
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    - - - Updated - - -

    mrgeek - "Always check to see if Firefox is default browser" has been checked since I began using Netscape in 1996. This doesn't "force" anything.
      My ComputerSystem Spec

  5. thomaseg1's Avatar
    Posts : 923
    Windows 10 Professional (x64) Version 1903
       #5

    Sounds like the install picked up a fault in firefox (out of date? or something else.)
    try uninstalling and re-installing firefox and resetting default apps. You have backed up your
    bookmarks and passwords, right?
      My ComputersSystem Spec

  6.    #6

    Save some page as .html, right click, Properties, General/Opens with/Change...

    Click image for larger version. 

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      My ComputersSystem Spec


  7.    #7

    Not only Firefox


    Hello thomaseg1 - I should have emphasized that it is not only Firefox but any other browser. No other browser is listed such as Chrome or Palemoon or IE11. So if a Microsoft update somehow put a glitch into Firefox requiring re-installation then it put the same glitch in Chrome and IE11, Microsoft's own browser.

    - - - Updated - - -

    Hello Edwin. I tried that but I don't get how that would change the system. I already have htm files default open to IE11. They still do. Also, html files open with Universal Viewer. How would your instructions change Windows 10?
      My ComputerSystem Spec

  8.    #8

    dangnad2 said: View Post
    ......Hello Edwin. I tried that but I don't get how that would change the system. I already have htm files default open to IE11. They still do. Also, html files open with Universal Viewer. How would your instructions change Windows 10?
    If you force a protocol, there's a good chance that app will show up as a default choice...

    Click image for larger version. 

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    Click image for larger version. 

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    You can always change the protocol back.
      My ComputersSystem Spec

  9.    #9

    Edwin - I get it. I tried it but it didn't work. The protocol for opening a web browser is HTTP or HTTPS. Once again, only MS Edge is offered as an app to open those protocols on my computer. If only I could get back the choices as in your screenshot above.

    I can tell you when this happened almost to the hour, about 10:00 Saturday morning. Firefox suddenly said "Firefox is not your default browser". I was doing nothing unusual at the time. Just reading email in Thunderbird and clicking on links.

    I'm also concerned than no one else is posting about this problem currently. There are many forum posts about this same problem back in 2016 and 2017 but it's just me in 2019.
      My ComputerSystem Spec

  10.    #10

    dangnad2 said: View Post
    I'm also concerned than no one else is posting about this problem currently. There are many forum posts about this same problem back in 2016 and 2017 but it's just me in 2019.
    Possibly there are no other posts about the problem because nobody else has experienced it. I use Firefox and had no problems with it after that update, it's still my default browser.

    My update history shows Cumulative Update for Windows 10 version 1809 for x64-based Systems (KB4494441) successfully installed on 5/14/2019. I don't know if it means anything but the same update KB4494441 was downloaded and installed again the next day 5/15/2019. You might check and see if you have two entries of this update as I do, FWIW my two laptops and my wife's laptops did the same thing.
      My ComputersSystem Spec


 
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