Tuesday, 14 July 2026 @ 16:01 UTC~5913,430150,826

Mozilla Firefox ESR (son)

Mozilla·Mozilla.Firefox.ESR.son

Get the Firefox Extended Support Release or Rapid Release browser for comprehensive data security and data protection.

winget install --id Mozilla.Firefox.ESR.son --exact --source winget

Latest 140.12.0·June 16, 2026

Release Notes

Version 140.12.0, first offered to ESR channel users on June 16, 2026 Firefox 140 Extended Support Release (ESR) includes all of the enhancements since Firefox 128, along with many new features to make your enterprise deployments easier and even more flexible.

Fixed

  • Various security fixes.

Developer

Installer type: nullsoft

ArchitectureScopeDownloadSHA256
x86—Download6AD90459A7A6290F0B3B9A655FE0F109192D66D3201C5991FBF3ECA910D922CA
x64—Download062809D8817AA2E707512811D2BC90728296A7EF3B3C82E1EC624039D6DD299C
arm64—DownloadB0269FCC3AA730ACBAD7178D5B86DF3021887C24EDD8F1F0147DDA314C6A3377

Details

Homepage
https://www.mozilla.org/firefox/enterprise/
License
MPL-2.0
Publisher
Mozilla
Support
https://support.mozilla.org/
Privacy Policy
https://www.mozilla.org/privacy/firefox/
Moniker
firefox-esr

Tags

browsercross-platformfossgeckoquantumspidermonkeywebweb-browser

Older versions (40)

140.11.0
ArchitectureScopeDownloadSHA256
x86—DownloadBA86F12F2524789B44390FD25F3BDCDDE130B6D546D18C01C120EBBE6AD2E762
x64—DownloadAA8CF88823383A1893B9863C5A37F83290587948E2A7B427F2FEDD07F9742E88
arm64—Download8C5F701C434BBB14E5A79F47299B7EF893D65A69A94064A4B07830063BC48570
140.10.2
ArchitectureScopeDownloadSHA256
x86—DownloadB38C92744E6E3CC59F715561A6CF717FD1546C17079A91C7D24F6AF632F83A0A
x64—DownloadA998465603B4269576748BC05FECD21DCA131D96D3D5A887D246015A0DA204C3
arm64—DownloadBD98BDA31E93EEE3C2D9A8622EABDB0B787DFC7E4412A78341799314B3E8FABC
140.10.1
ArchitectureScopeDownloadSHA256
x86—Download891284BC4C4AE3A8A7818BA449E3C3CC25DB0D25401D5393F5B9FD7FF6419673
x64—Download8C3B6B15F023D082C61D437DCA57BF3E644169680D5AC39FA85DB2E0321A4AFB
arm64—DownloadED66632307B143410279739DCFDC4CA1835C2FCDCB760C0082A3073722BD85CF
140.10.0
ArchitectureScopeDownloadSHA256
x86—DownloadBDAE0351160147D04C184A2033E631780DEF566969840E590A552A57226B787E
x64—Download3EB57E028FBB1DFAB4FBAC5468127577651785D6D661D5DC5BCFD7E3CED05D4E
arm64—DownloadDCD81A3A5FCB0E45F76CA2A268013597B163C28B187286D182E4D76AC5AA570F
140.9.0
ArchitectureScopeDownloadSHA256
x86—DownloadD4FA103FA4FF31857761D489F85B0454B70FAE71FB95921D4BB1449629025AEA
x64—Download1DA03B158F23E394D05B7C59651850DDABB5D9AD11D96DC794CEE9D9A87121AB
arm64—Download9551B2BD1F503D462FC082D0E4F3C2F6C15CCC547297D58FF5642662E90A53FC
140.8.0
ArchitectureScopeDownloadSHA256
x86—Download8D4A2E3C4EF4C5A063897BE45D1ECBE7287FCE31438519C3BE0744054257D0D7
x64—DownloadD36C5AEAE07E164A1E8A5AD7A383753AA273BDAD9A1D0441C1CEAF2DCEB61279
arm64—Download85FBCD90CD4250C304216AAACB0D25B71D8602AF21B543942BF42373CE250EE9
140.7.1
ArchitectureScopeDownloadSHA256
x86—Download708981614185FAF5BCAA5DEB11F29A8E1BA0E2DD8CE3B5A839CC6E0B164E9051
x64—Download55172E03370540BA5D4BA2119DE397B7E1F4439B654B5F3BD952824EC70118A0
arm64—Download9FF60C650E07454EDA9365FE4523978393315C02BB73A32E059265848F25C599
140.7.0
ArchitectureScopeDownloadSHA256
x86—DownloadBB454CEFF4C41CA8B38EE674F6D5467A5FA884D13473E53B25CE3302A868C4B1
x64—Download4C7EEB76CA43F1F0A2DADAEDAF828C0AED27708C8E21073DD69D7BC87AB84CD0
arm64—Download97F241B3D067F3149860CC8BCBD7B1BB6233F5CE04C38278E7AB64E22E3C8F20
140.6.0
ArchitectureScopeDownloadSHA256
x86—Download8BE17659E07E4F751C8D5CB1C5BBBEE6F62F15AE599C3DE0A4898A4A61602A1E
x64—Download39B1F25D50856D4D5BE501B2DB10CA2FA10EAC9A92088C2B1C0FD298C801684A
arm64—Download4C36D4D9FDB4F255267778F67BF49D018F1B0CB42529F7C711FC50BBEB6C764C
140.5.0
ArchitectureScopeDownloadSHA256
x86—DownloadBC3DB8AECB5B162DE934633CEA830FA66EB7F3555DB5FF2FFCAF7DA079E2BDCB
x64—DownloadC4414FFE9AC5C7F87D217F8A6C11F04679CF7AEDDA35EFE7A6D011364237AB03
arm64—Download6B5BCEC7F5B1EC43A29798BC698F41BDDED70919A9430348D56E74EEA5BD3EA1
140.4.0
ArchitectureScopeDownloadSHA256
x86—Download5E0B7C74A13FE495F2A798DB32434113C819AB54D82A534C30719989EEEF7A05
x64—Download43137FEDEFA8BF9E364604F6583AEA528BA7CE17A13C8DCA626A7B33E603C2B6
arm64—Download3474EC736DE42B551196FF30EC0BE28199D1BCA9D10BA9F092E255CC98834194
140.3.1
ArchitectureScopeDownloadSHA256
x86—Download7C12DA0BCF5DEB8719595C88F9C56337978503ABD50531EF4AE4496ED64A8531
x64—Download2669D4B2190D48C88BC57909FC18D129B1948989DEB205F07181E3308DD48C98
arm64—Download3FFA08784B8302635A5CE63AF7C3554D2815856B8444E3DCF6BA1B574350EE87
140.3.0
ArchitectureScopeDownloadSHA256
x86—DownloadF59E82EF37A5199DC6ACD63B1078E3A353D1E1AFC9C4FEF798DAD1441695E860
x64—Download087CAD71E0343FF1A46DEF7BB98DFA8908E5DC978012EFD75290A88C491D499D
arm64—Download49E315E54FEB8241A83DA7EE44F0A3A761A82DD9D9A6230AF2A3BBA614246AA7
128.14.0
ArchitectureScopeDownloadSHA256
x86—Download88D4A54704138D00E5987666DB4A563AD90E9225F86F3DA844B9AA842E718735
x64—DownloadFE608714C9C93CBA5174406375A91A0AEBEF0C529F4DF6FF9923CBAD10A651D2
arm64—Download415A804918F74CDADDB96B36B342D0C8B4651F3663419A1C3B3844AC06DF1B2B
128.13.0
ArchitectureScopeDownloadSHA256
x86—Download6ABFCD123AAF2612343E8063407E1651C5E0EDB16F81F9D177378D3D6457CF44
x64—Download9D19742F8C2F9BD4AC22640DDD4CC78CE0962F4C007403B79A8E2BB5A282C012
arm64—DownloadA073ABE4543DC2D95C9DDB96E21CCA15E2B3C03F9FA1DC7BA8F8FD39C33B2076
128.12.0
ArchitectureScopeDownloadSHA256
x86—DownloadD30AC8B1BD38864487E758E8B7AC93EB50E244FDC8D0CAC7DF34732B0B58EC3D
x64—Download62654F9B0AB528BF43C74079D4100E996E62DB06AEF4AB749016A956A3A674E7
arm64—Download44F7C073F8706777E3B0B5FCA526D480E53631EA45B96DB14E319A51E00A74F1
128.11.0
ArchitectureScopeDownloadSHA256
x86—Download4B89CB7C77B7CE58F9EDD2F870D07F8DAF9936F1F4AE517737FF1A33F2B888B5
x64—Download708EA68FB344249289E6E3F975DFF8558BB129CB5A14524398EEA92EBFF74D11
arm64—DownloadDD7AC1E2F2C38E5736B126B769210DE74D7BAC6AC268B64F6A09AF56E0AADBD1
128.10.1
ArchitectureScopeDownloadSHA256
x86—Download0E45024E27699A01C834FA2069E19BB09377CCFBC8648BA64441F8984712FE08
x64—Download62A25167B1B95E8C1028A8C8C9882470CD48EBF137ADC30901A3DF068A88C4A0
arm64—Download07E9BD018F84898FD6664D1B0ABD60441F933DF335BB299487AA297AAD2D90B1
128.10.0
ArchitectureScopeDownloadSHA256
x86—DownloadC1E39D1F76E35C84ED873C51F25A9DA3B94ABC3E2BAF4442E9230997565FE22B
x64—Download7DDCE70B16BBCF2CD165BB579E19D7C6965279434F94493157FC4D5FF9DED204
arm64—Download2584200CAFB90F5AC227D02852BAD1D6765AEE18BE49A7F38A1539AE98BB634D
128.9.0
ArchitectureScopeDownloadSHA256
x86—Download593EE6AB4041A814B9C7BD29A22768CDE750E5F4126A4F44B5BBE10BC8C74DC9
x64—Download7A6FC3199A875DA52A3E6A12DDF031D8954FE900E2B8FA73A2F49A000AC29889
arm64—Download06634E68151B6C608CBECFE97A816BB1ED4A670A82F7D30D03EDDE391091136D
128.8.1
ArchitectureScopeDownloadSHA256
x86—Download8625B00D3C0218DDBAFD7981A93F2B3277E81E7A50845BDE2C5198401011FC46
x64—DownloadFB652C5EDD370FDF731C485C24C6AF4B9774BB0F95F4BDF68D3B0DE6E98F2738
arm64—DownloadA2587DB4245B7CDB9910F085C38097778B10D2EC31795C332FC87531AB4891CA
128.8.0
ArchitectureScopeDownloadSHA256
x86—DownloadB17E71D9E387E3A5F8F09080FF90551E77F6AB8BDD8B0163276115EA32FED419
x64—DownloadC55C7D13A7140CB5AFA8E7D445E5BD17CF214CE85237C5D874FDA54C7EA34709
arm64—Download895313DEC012CC605B682BD8030A2EA342B7BD860CBD1A9AA3BB64CF36B9E78C
128.7.0
ArchitectureScopeDownloadSHA256
x86—Download443C9B9CCC68C602A030978F031E0998AD5D73223D6D2D57CF8BDB8B0D33C532
x64—DownloadCF5623F353C7160E02632D281CA63DD8989607BCF4A7712386C619D78B056CA0
arm64—DownloadF16FCCBC70510F7C5FE03029A8D59183972FBDE3EDDDBFECB8219DD7491CFF9C
128.6.0
ArchitectureScopeDownloadSHA256
x86—Download005FE3318DEDCDA57116AC676CF8355C9DB0DF0DC57C88095FF5ED9B19C3A198
x64—Download4F7801327C3F0B89D9F59F006348EB29B807D01A056DC4FE4F57B2C859B7E7A1
arm64—Download53343E54BD7AF60AF65F774A1F02795FAF57FEA28F63491A58BEC14E58541975
128.5.2
ArchitectureScopeDownloadSHA256
x86—Download03206EFD44C18B99D32369178D1B22260FBC2AFFF061ACF5B1EDC560C17E13EC
x64—DownloadE9DE242B499016C51EC024ABA69F60037C1063CE0E1556BA6E785B711F3441EA
arm64—Download75C0BAF881EFDE0C650325458CF7FDEC17E5A1A35030425A8CF68110FA3D4524
128.5.1
ArchitectureScopeDownloadSHA256
x86—Download3D5400D714770C50B84F53EDF607D6CEBC5621CEB4F8FC5857D33753FB68DF80
x64—Download11E1ABB51279474A567129683EB7C4198E4701759B718CCDB0B952B13E36C7EE
arm64—Download415C22871CDE3BC4408F6EDD8444370EF4DC4545716A1707045232FC5BCEE83F
128.5.0
ArchitectureScopeDownloadSHA256
x86—Download4B858DD137F21CD0FBE232E081C5010AB7F099C18C1E10AAEC74D9FFC1394221
x64—Download1B8CE30A7427EFBA40DEAC774F064AF6EAB990C1E94A4F95928D5559B31942EB
arm64—DownloadA6B94D1A87B34D419CC3C2123627ACE04CAA282274D4577A56CC791EF8375E33
128.4.0
ArchitectureScopeDownloadSHA256
x86—Download5395C2E593EADEEEEF3AA8C4D4B305747746F6A919437E63FF55598DDA9A27F1
x64—DownloadCE835EAEDD50B4D8F58CDE5B4B4889995C73373E34E1E8F4F592E265554EB732
arm64—DownloadE51C66B6811A6141C82E35538D85F4D9C5CAE6F83EF4866D49CDA540EC8E291F
128.3.1
ArchitectureScopeDownloadSHA256
x86—DownloadC6A3FE8037C0C73D2999573DD8D72B06E5605188EAFC52E1474F295155F90A70
x64—Download8736E189252007FB90DCD4959F5E9BEDB80292C1039FC3E53DC37FAB8FED52EE
arm64—DownloadB7B06A2FF579AD3B46D28E47E3CD4F44D7E065AD38022BDA1FC9100D7863D761
128.3.0
ArchitectureScopeDownloadSHA256
x86—Download0EF62801FA435F786F8E6976DFB605ECAD00C2929C320BF056E5B63A80D17BB1
x64—DownloadF50FA5E2E2CCD1B3AA6E0D28AFC732551EEE2164CEC2DAC1EC5A241887A7FA20
arm64—DownloadDEC4FA9223826622FB30323C8D3808150F6768090BC89442E2950D4E5CA91194
115.15.0
ArchitectureScopeDownloadSHA256
x86—Download3975A622A12D49072775A93F61F5403401B001F4D1ADD4BC77107FCE6DF468E3
x64—Download227B5E52369E8853CC6E9D4647E36CC04B26425B4378822D838F08DEEF5DD2E6
arm64—Download5B89904E10A7FB6063E2D0D91D15D126363ECB135117D413FF1C3196953910B5
115.14.0
ArchitectureScopeDownloadSHA256
x86—Download6C4046963820E47B3EED1D6D239AE09369AD7B4A88D278EEE562A394A4BBC3E8
x64—Download42F291B3895E0E403BD10C9F488C2AAAABDA897CE898F1123040FC7F764A5CF3
arm64—Download1B0DB3443883590E6AF0DE00416FCB89C65E22E10168AC859FB7BBFC364CAEB0
115.13.0
ArchitectureScopeDownloadSHA256
x86—Download19C6C583160B45A5FF820649F62815E8AD16B4205912E601D0C381C7B1069D72
x64—Download873FD1272BA73605034226AC4DBFBE956893BA0CC26CA1BFC5216259D5090977
arm64—Download23EDA0259546FF766D0F4B23AC1623635FDFFBE07BAD29A2E57534A8D8B9809C
115.12.0
ArchitectureScopeDownloadSHA256
x86—Download3ACB6536B93116B9AD5F6C5707016C54B0608D88D62606AB6B3ABB23DE8CEC5A
x64—DownloadB070F2B0872165A8FB2BCBD6E8AA861D4D3BC1FA5C5AEF431C4A7B0067AB1B32
arm64—DownloadF1DD1544140232E838BE6D43E3B390B48D7B846C2FE0B42F4A041E10B600ACDD
115.11.0
ArchitectureScopeDownloadSHA256
x86—DownloadFB1B4E45BC11CF77E9E4BF802B7B9080DFAE4F7D4B91A6A7FB7AD8467CD1316A
x64—Download9F707FADDEE132F8C71068FA7EA636B280D1C2834B556A39EA8BE290F3F0E59F
arm64—DownloadAF900B53A7E81117A98B63ABD9D24063C6409F3D1BF984F450CC17BE5A2B3BA3
115.10.0
ArchitectureScopeDownloadSHA256
x86—Download48E56393763F5725D39E9D643619FB9D70A0741DE3C7EE917BF0A3B092B26472
x64—Download97593F24DF7EB15CCC5FBE98F1AC8EB97700315F467D80F38F231951C386348F
arm64—Download6B63425F3923EF6EDD26B92F80C9F7278A39940932272577367044283461157F
115.9.1
ArchitectureScopeDownloadSHA256
x86—Download44C6C8B4FC7A09D2FD300F541954640617B8A54888A68CF0739762A9F66FDAAA
x64—Download950E609AEE05848E68BFCA5B91496CD622C92F3B67A648997C2AE2B489B16C92
arm64—DownloadD1DC38A2612BAFE4A96A76A6FBCFD7D9FBA41EB95A27DF157374ACFCF752E784
115.9.0
ArchitectureScopeDownloadSHA256
x86—DownloadDEDC3509A1B3F03E0A7B36AC7DD338AA9EA2E675E057AA83C0418071A93B0F4B
x64—Download6D7E357825491581B151DFB9ED13C8D0F601956036483914D06A3E42D1A35A36
arm64—Download7882C39CFD4DACF44601FB253664034486C1C288D3CBC1278A88EF74F90B29A8
115.8.0
ArchitectureScopeDownloadSHA256
x86—Download6D0765449044AB2657B1E4DFD33A75B93591355E7A1AF3CECB7C767D0AC8F23F
x64—Download0A82BB9F935A09F76316BC6EB8A54F5D996C9B257CD134EF0C4298543BAE78FC
arm64—Download35D1367702D7445C54F1BBED7BA87582DE8A0A0E03FFDC9A9A8EE7B1A4719B06
115.7.0
ArchitectureScopeDownloadSHA256
x86—DownloadD5AB8440F35E89B3BA42D0207FBC56F08B9370F337DD13299F7EBDC28E017E0A
x64—Download03E2671324C93F9A82627B4F3E09D6CE3B6073B18A326646F0D10A336E64E2BE
arm64—Download2DEA52BD668C4EFF0E1E9252D5F3375D86C1859FC6730E75AF7996463B3CF668