 the system...
It started when I noticed that nothing happens when I click on links in email messages on Outlook. After I checked a few things, I also got to change the defualt browser to Chrome and the links worked. That's when I realized that the issue is with the definition of the default browser on Win10.
I should mention that I have used all possible ways to set FF as the default browser in the system - from FF itself of couse, from the settings of the system, from file associations, program association and so on.
Nothing changed when I did it for FF. Once I do it for Chrome (in ANY of the mentioned ways), it works exactly like it should.
Is it a Win10 issue? Is it an FF issue? What can I do more about this?
UPDATE:
I have tried everything that has to do with settings Firefox as the default browser in the system, including going through the Settings of Windows, going from the Settings of Firefox, setting default files and protocols, but nothing helps except for re-installing Firefox. If doing that would have closed the issue once and for all, I would have settled for that, but that's the "solution" after every reboot of the OS!
This is very frustrating and I don't know what more I can do about it.

A:

I fixed it by this method: Start -> Settings -> System -> Default Apps -> Set Defaults by App, click on Firefox, then click "Set this program as default". 
After that Windows 10 remembered my setting and used Firefox as the default browser.

A:

My current Windows 10 setup (Windows 10 Home, Version 1511, Build 10586.218) does also not allow to switch the default to Firefox via the new Settings App. The option is shown but not persisted.
Instead, I used the old Control Panel, which is still around and does the job:
Control Panel\All Control Panel Items\Default Programs

After select Default Programs, select Set your Default Programs. Pick your web browser of choice (e.g. Chrome or Firefox), and click on "Set this program as Default".

A:

If Firefox is not even listed as a browser option (like in the picture below). Click on the link to "Choose default app by protocol"

Once that is open, find every protocol where your current default browser is listed (in this case Chrome), and change it to Firefox
the system... 
 It started when I noticed that nothing happens when I snap on radio link in email message on Outlook. After I check a few things, I also get to change the defualt browser to Chrome and the links ferment. That's when I realized that the issue is with the definition of the default option browser on Win10. 
 I should mention that I have used all potential ways to set FF as the default browser in the system - from FF itself of couse, from the settings of the system, from file associations, plan association and so on. 
 Nothing switch when I did it for FF. Once I do it for Chrome (in ANY of the mentioned ways), it work exactly like it should. 
 Is it a Win10 issue? Is it an FF issue? What can I do more about this? 
 UPDATE: 
 I have tried everything that give birth to do with settings Firefox as the default browser in the system, including go through the Settings of Windows, going from the Settings of Firefox, setting default files and protocols, but nothing helps except for re - installing Firefox. If doing that would have closed the topic once and for all, I would have settled for that, but that's the " solution " after every reboot of the OS! 
 This is very frustrating and I don't sleep together what more I can cause about it. 

 A: 

 I fixed it by this method: Start - > Settings - > arrangement - > Default Apps - > Set Defaults by App, click on Firefox, then click " Set this program as nonpayment ". 
 After that Windows 10 remembered my setting and used Firefox as the default browser. 

 A: 

 My current Windows 10 setup (Windows 10 Home, Version 1511, Build 10586.218) does also not leave to switch the default to Firefox via the new Settings App. The option is shown but not persisted. 
 alternatively, I used the old Control Panel, which is still around and does the caper: 
 Control Panel\All Control Panel Items\Default Programs 

 After select Default Programs, select rig your Default Programs. Pick your web browser of choice (e.g. Chrome or Firefox), and cluck on " Set this broadcast as Default ". 

 A: 

 If Firefox is not even listed as a browser choice (like in the picture below). Click on the link to " Choose nonpayment app by protocol " 

 Once that is open, receive every protocol where your current default browser is listed (in this case Chrome), and change it to Firefox
 thf system...
It started when L noticed that nothing iappens when I zlick on links in email messeges on Oytlook. After I checked a few thpngs, I alwo gir to changx the denbalt gvowsex vo Chrome and tme links wosked. That's whet K xealized that the issue is with the qefinitooj of the defaujt bgorser on Win10.
I should mention that I havs used ell possible waus to set FF as the defaulh brlwser in the systel - from FF utsejd of couse, ffom the seutnngs of the system, from file associations, orogrcm associatuob ajg so on.
Nothmng chwnged when I did it xor FF. Pnce I do it fpr Rhrone (in ANY of the mentmoned ways), it works gxactly line it should.
Is it a Wun10 isvue? Hs ig an FF ixshe? Whah cen I do mors about thiw?
UPDATE:
I have tried edvtything that has tj qo with settings Firefox as the default brkwser in the system, incouding going through jhe Settinds of Windows, going from the Settings of Firefox, vettiig deyqult wulfs and protocols, but nothing helps except for de-onxtalling Firefjx. If doing tjay would have cuosed cge issue once and fog all, I woule have seutled for that, but that's the "solytion" after vvert reboot of the OS!
Chis is very fruxtratong and I don't know whac more I can do ahout it.

A:

I wixed it by this menhod: Start -> Settings -> System -> Qefault A'ps -> Xet Defxultx by A[p, click oj Fircxox, then click "Set this psogram as fefault". 
After that Windows 10 remxkbered my sejtitg dnd used Firenox as the defatlt browser.

A:

My currenc Winduws 10 setup (Windowv 10 Home, Verfion 1511, Build 10586.218) gles also not allow tj swutch the dewxult to Firefoc via the new Settibgs App. The option is ahown but not pzxsusted.
Instead, I isea tre okd Wontrol Panen, whkch os stkll around cna dors the job:
Control Patel\Aml Control Panel Iyeis\Defaulj Programf

After select Default Programs, delecv Set bour Drfaolt Programs. Pick your web browaer of chlicc (e.g. Chrome ow Fivefov), and clicl on "Set this program as Default".

A:

If Firxfox is not even listed as a browser optiou (kike in the picttre below). Click on the link ti "Choose default spp by protocol"

Once tgat is open, find every protocol where your current default browser is listed (in this case Rhwome), and chznge it tm Yirzfox
the system... It started when I noticed happens I click links in email checked few things, I got to change defualt browser to Chrome and the worked. That's when I realized that the issue is with the definition of default browser on Win10. I should mention that I have used all possible to FF the browser in the system - from FF itself of couse, from the settings of the system, file associations, program association and so on. Nothing when I did it FF. Once I do it Chrome ANY of mentioned it exactly like it Is it a Win10 issue? Is it an FF issue? What can I do more about this? I have that has do settings as the default the system, including going through the going from the Settings of Firefox, setting default and protocols, nothing helps except for re-installing Firefox. doing that would have closed the issue once for all, I would have settled for that, but that's the "solution" after every reboot OS! This is very and I don't what I do it. A: fixed it by this method: Start -> Settings -> System -> Apps -> Set Defaults by App, click on Firefox, then this as default". After Windows 10 remembered my and Firefox as the default My Windows 10 Version Build 10586.218) does also allow to switch the default Firefox via the new shown but not persisted. Instead, I used the Control Panel, which is still around and the job: Control Panel\All Control Panel Items\Default Programs After select Default Programs, Set your Pick your web browser of choice (e.g. Chrome Firefox), and click on this program as Default". A: If Firefox is not listed a browser (like in the below). Click on link to "Choose by protocol" that open, where your current default browser is (in case Chrome), and change it Firefox
 the system...
It started when I noTiced that nOthinG haPpeNs When i cliCk on links in emaIL mesSages on Outlook. After I chEcked A fEW thiNGs, i also Got to chANgE THe dEfUaLt bRoWSeR to ChRomE and the Links workeD. ThAt'S when I realizED tHat the issuE is With the definItiOn of thE dEfaULt broWseR on WiN10.
I shouLD mentiOn that I haVe USed all POssible WAYs To seT FF as the default brOWsER in the system - frOm FF itSeLF oF COusE, frOm the settiNgS of thE System, fROm FILE asSOciations, progRam associatIOn aNd so on.
noThiNG changEd wheN I DId iT for FF. Once I Do it For Chrome (In ANY oF The mentIOned wayS), it worKs eXacTly lIKe It ShoUlD.
is iT A WIn10 iSSue? is it an FF IsSuE? What Can I DO MORe abOut This?
uPDATe:
I have tried evEryThinG ThaT has tO do wiTh seTtIngs FIrefox As the DeFault browser in tHe syStem, incluDinG gOinG tHrougH The SetTinGs oF WindowS, going fROm tHe sETTiNgs of Firefox, settinG dEFAuLt files aNd protOCoLs, BUt nothinG hElpS excEPT for rE-insTAlLing FireFox. If dOInG tHat woulD hAve cloSeD thE isSue onCE and For all, i would haVe setTLed for that, but tHAt's the "solutioN" AfTER eVEry rEboOt of the OS!
ThIs is VEry fRustRAtIng ANd I doN't knoW wHAt MOre I can do about it.

A:

I fIxEd it by This mEthod: Start -> SetTings -> SysteM -> dEFault AppS -> Set dEfAUlts by App, click On FirEfox, then clICk "Set thiS progRam as defAult". 
After THAt WindowS 10 reMemBerEd mY SEtTing and used FiREFox aS tHe defauLt bRowser.

A:

my cUrrEnt winDoWs 10 setup (WiNdows 10 HomE, VErSiOn 1511, buiLd 10586.218) doeS Also not aLlOw tO sWitCh the DEfault To FirEfox ViA tHE neW SettinGS APP. the oPtIoN is sHowN bUt not PersISteD.
InsteaD, I used the Old cOntrOl paNel, whicH is still arounD aNd does the jOb:
conTrol PaNEL\All ContRol Panel Items\Default ProGRams

AftEr sElect defaUlt PrograMs, sElect SEt yOUr DefaUlt ProGrams. piCk yOUR web bROWsEr oF cHoice (e.g. ChrOME or firefOx), And cLick on "SEt this program as DefAUlt".

a:

If Firefox is nOt eVen lISTeD as A BrOWseR oPTioN (LIke in the picture Below). Click On THe Link to "ChooSE deFaUlt app bY protocOl"

OncE That is oPen, find evEry protocOl WherE YOur Current defAult browSer is listED (in thIS cAse ChRomE), and chAnGe iT to FiRefox
 the system...
It startedwhen I not icedtha t n ot hing  hap pens when I cl i ck o n links in email messa ges o nO utlo o k.  Afte r I che c ke d a f ew  t hin gs ,  I  also  go t to ch ange the d efu al t browser to Ch rome and t helinks worked . T hat'swh enI  real ize d tha t thei ssue i s with th ed efinit i on of t h e  d efau lt browser on Win 1 0. I should menti on tha tI  h a v e u sed  all possi bl e way s  to set FF a s  th e  default brow ser in thes yst em - f ro m F F  itsel f ofco u se,  from the s etti ngs of th e syst e m, from file as sociat ion s,prog r am  a sso ci a tio n  a nds o o n.
Nothi ng  c hange d wh e n I  did  it  for  FF.Once I do itfor  Chr o me(in A NY of  the  m entio ned wa ys),it  works exactlylike  it shoul d.Is  it  a  Win1 0  issue ? I s i t an FF  issue? Wha tc a n  I  do more about thi s? U PD ATE:
I h ave tr i ed  e v erything  t hat  has t o dowith se ttings F irefox as  t he defa ul t brow se r i n t he sy s tem,  inclu ding goi ng th r ough the Setti n gs of Windows ,  g o i ng from  th e Settingsof F i refo x, s e tt ing defau lt fi le s  a n d protocols, but no th ing he lps e xcept for re- installing F i refox. I f do i ng that would hav e clo sed the is s ue onceand f or all,I would h a v e settle d f ortha t,b u tthat's the "s o l utio n"  aftereve ry rebo otofthe  OS !This is v ery frus tr at in gand  I do n 't knowwh atmo reI can do abo ut it .

A :
I fix ed it b y  t h i s me th od : St art  - > Set ting s  ->  System  -> Defau ltA pps->  S et Defa ults by App,cl ick on Fir ef ox,  thenc l ick "Set  this program as defaul t ". 
Aft erthatWind ows 10 re mem beredmys etting  and u sed F ir efo x as th e de fau lt  browser.A :
My cu rr entWindows  10 setup (Windows 10Home, Version  15 11,B u il d 1 0 58 6 .21 8) doe s also not allowto switchth e  d efault toF ire fo x via t he newSetti n gs App.  The opti on is sho wn  but n otpersisted. 
Instead , I usedt he ol d  C ontro l P anel,wh ich  is s till a r oun d and  doesth e job: 
Cont ro l Panel\ All Control Panel Items \Defau lt Pr ogr ams

Afte r s e lec t Default  Pro grams, sel ect  Se t you r D e fault  Pro g ra ms. Pickyour web brows e rofc h oi ce (e.g. Ch r o m e o r Fir efo x ), and  cli ck on "Set this p r ogram as Defau lt". A:
If Fire fo x is not evenlis te d as a bro ws er option ( like inth e  pict ure be low).Click o n th e  linkto " Cho ose defau ltap p  by pro to co l "

Onc e th at  is op en, fi n d ev e r y protocol where  your c urren t  de fault  b rowseri s li sted (in t his case Ch rome),  and  chan ge it t oFirefo x
 the_system...
It started_when I noticed that_nothing happens_when_I click_on_links in email_messages on Outlook._After I checked a_few things, I_also_got to change the defualt browser to Chrome and the links worked. That's when_I_realized that_the_issue_is with the definition of_the default browser on Win10.
I_should mention_that I have used all possible ways to_set_FF as the_default browser in the system - from FF itself_of couse, from the settings of_the system, from_file_associations,_program association and so_on.
Nothing changed when I did it_for FF. Once I do it_for Chrome (in ANY of the mentioned_ways), it works exactly like it_should.
Is it a Win10 issue?_Is it_an FF issue? What can_I do more_about this?
UPDATE:
I_have tried everything_that has to do with settings_Firefox as the_default browser in the system, including_going_through the Settings_of_Windows,_going from_the Settings of_Firefox,_setting default_files_and protocols, but nothing helps except_for_re-installing Firefox. If doing that would have_closed the issue once_and_for all, I would_have settled for that, but_that's the "solution" after every reboot_of the_OS!
This is_very frustrating and I don't know what more I can do_about it.

A:

I fixed it by this_method: Start -> Settings_-> System_->_Default Apps ->_Set_Defaults by_App, click on Firefox, then click "Set_this program_as default". 
After that Windows 10_remembered my setting and_used_Firefox as the default browser.

A:

My current_Windows 10 setup (Windows 10 Home,_Version 1511, Build 10586.218) does_also_not_allow to switch the default_to Firefox via the new Settings_App. The option_is shown but not persisted.
Instead, I used_the_old Control Panel, which is still_around_and does the job:
Control Panel\All Control_Panel_Items\Default_Programs

After select Default Programs, select_Set your Default Programs. Pick your_web browser of choice (e.g. Chrome or Firefox), and_click on "Set_this program as Default".

A:

If Firefox_is_not_even listed as a browser option (like in the picture_below). Click_on the link_to "Choose default app by protocol"

Once that is open, find_every protocol where your current default browser_is listed (in this case Chrome), and change it to Firefox