Name: Mozilla Firefox ESR (son)
Author: Mozilla

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 140.9.0

Release Notes

Version 140.9.0, first offered to ESR channel users on March 24, 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`

Architecture	Scope	Download	SHA256
`x86`	—	Download	`D4FA103FA4FF31857761D489F85B0454B70FAE71FB95921D4BB1449629025AEA`
`x64`	—	Download	`1DA03B158F23E394D05B7C59651850DDABB5D9AD11D96DC794CEE9D9A87121AB`
`arm64`	—	Download	`9551B2BD1F503D462FC082D0E4F3C2F6C15CCC547297D58FF5642662E90A53FC`

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

Older versions (35)

140.8.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`8D4A2E3C4EF4C5A063897BE45D1ECBE7287FCE31438519C3BE0744054257D0D7`
`x64`	—	Download	`D36C5AEAE07E164A1E8A5AD7A383753AA273BDAD9A1D0441C1CEAF2DCEB61279`
`arm64`	—	Download	`85FBCD90CD4250C304216AAACB0D25B71D8602AF21B543942BF42373CE250EE9`

140.7.1

Architecture	Scope	Download	SHA256
`x86`	—	Download	`708981614185FAF5BCAA5DEB11F29A8E1BA0E2DD8CE3B5A839CC6E0B164E9051`
`x64`	—	Download	`55172E03370540BA5D4BA2119DE397B7E1F4439B654B5F3BD952824EC70118A0`
`arm64`	—	Download	`9FF60C650E07454EDA9365FE4523978393315C02BB73A32E059265848F25C599`

140.7.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`BB454CEFF4C41CA8B38EE674F6D5467A5FA884D13473E53B25CE3302A868C4B1`
`x64`	—	Download	`4C7EEB76CA43F1F0A2DADAEDAF828C0AED27708C8E21073DD69D7BC87AB84CD0`
`arm64`	—	Download	`97F241B3D067F3149860CC8BCBD7B1BB6233F5CE04C38278E7AB64E22E3C8F20`

140.6.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`8BE17659E07E4F751C8D5CB1C5BBBEE6F62F15AE599C3DE0A4898A4A61602A1E`
`x64`	—	Download	`39B1F25D50856D4D5BE501B2DB10CA2FA10EAC9A92088C2B1C0FD298C801684A`
`arm64`	—	Download	`4C36D4D9FDB4F255267778F67BF49D018F1B0CB42529F7C711FC50BBEB6C764C`

140.5.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`BC3DB8AECB5B162DE934633CEA830FA66EB7F3555DB5FF2FFCAF7DA079E2BDCB`
`x64`	—	Download	`C4414FFE9AC5C7F87D217F8A6C11F04679CF7AEDDA35EFE7A6D011364237AB03`
`arm64`	—	Download	`6B5BCEC7F5B1EC43A29798BC698F41BDDED70919A9430348D56E74EEA5BD3EA1`

140.4.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`5E0B7C74A13FE495F2A798DB32434113C819AB54D82A534C30719989EEEF7A05`
`x64`	—	Download	`43137FEDEFA8BF9E364604F6583AEA528BA7CE17A13C8DCA626A7B33E603C2B6`
`arm64`	—	Download	`3474EC736DE42B551196FF30EC0BE28199D1BCA9D10BA9F092E255CC98834194`

140.3.1

Architecture	Scope	Download	SHA256
`x86`	—	Download	`7C12DA0BCF5DEB8719595C88F9C56337978503ABD50531EF4AE4496ED64A8531`
`x64`	—	Download	`2669D4B2190D48C88BC57909FC18D129B1948989DEB205F07181E3308DD48C98`
`arm64`	—	Download	`3FFA08784B8302635A5CE63AF7C3554D2815856B8444E3DCF6BA1B574350EE87`

140.3.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`F59E82EF37A5199DC6ACD63B1078E3A353D1E1AFC9C4FEF798DAD1441695E860`
`x64`	—	Download	`087CAD71E0343FF1A46DEF7BB98DFA8908E5DC978012EFD75290A88C491D499D`
`arm64`	—	Download	`49E315E54FEB8241A83DA7EE44F0A3A761A82DD9D9A6230AF2A3BBA614246AA7`

128.14.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`88D4A54704138D00E5987666DB4A563AD90E9225F86F3DA844B9AA842E718735`
`x64`	—	Download	`FE608714C9C93CBA5174406375A91A0AEBEF0C529F4DF6FF9923CBAD10A651D2`
`arm64`	—	Download	`415A804918F74CDADDB96B36B342D0C8B4651F3663419A1C3B3844AC06DF1B2B`

128.13.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`6ABFCD123AAF2612343E8063407E1651C5E0EDB16F81F9D177378D3D6457CF44`
`x64`	—	Download	`9D19742F8C2F9BD4AC22640DDD4CC78CE0962F4C007403B79A8E2BB5A282C012`
`arm64`	—	Download	`A073ABE4543DC2D95C9DDB96E21CCA15E2B3C03F9FA1DC7BA8F8FD39C33B2076`

128.12.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`D30AC8B1BD38864487E758E8B7AC93EB50E244FDC8D0CAC7DF34732B0B58EC3D`
`x64`	—	Download	`62654F9B0AB528BF43C74079D4100E996E62DB06AEF4AB749016A956A3A674E7`
`arm64`	—	Download	`44F7C073F8706777E3B0B5FCA526D480E53631EA45B96DB14E319A51E00A74F1`

128.11.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`4B89CB7C77B7CE58F9EDD2F870D07F8DAF9936F1F4AE517737FF1A33F2B888B5`
`x64`	—	Download	`708EA68FB344249289E6E3F975DFF8558BB129CB5A14524398EEA92EBFF74D11`
`arm64`	—	Download	`DD7AC1E2F2C38E5736B126B769210DE74D7BAC6AC268B64F6A09AF56E0AADBD1`

128.10.1

Architecture	Scope	Download	SHA256
`x86`	—	Download	`0E45024E27699A01C834FA2069E19BB09377CCFBC8648BA64441F8984712FE08`
`x64`	—	Download	`62A25167B1B95E8C1028A8C8C9882470CD48EBF137ADC30901A3DF068A88C4A0`
`arm64`	—	Download	`07E9BD018F84898FD6664D1B0ABD60441F933DF335BB299487AA297AAD2D90B1`

128.10.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`C1E39D1F76E35C84ED873C51F25A9DA3B94ABC3E2BAF4442E9230997565FE22B`
`x64`	—	Download	`7DDCE70B16BBCF2CD165BB579E19D7C6965279434F94493157FC4D5FF9DED204`
`arm64`	—	Download	`2584200CAFB90F5AC227D02852BAD1D6765AEE18BE49A7F38A1539AE98BB634D`

128.9.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`593EE6AB4041A814B9C7BD29A22768CDE750E5F4126A4F44B5BBE10BC8C74DC9`
`x64`	—	Download	`7A6FC3199A875DA52A3E6A12DDF031D8954FE900E2B8FA73A2F49A000AC29889`
`arm64`	—	Download	`06634E68151B6C608CBECFE97A816BB1ED4A670A82F7D30D03EDDE391091136D`

128.8.1

Architecture	Scope	Download	SHA256
`x86`	—	Download	`8625B00D3C0218DDBAFD7981A93F2B3277E81E7A50845BDE2C5198401011FC46`
`x64`	—	Download	`FB652C5EDD370FDF731C485C24C6AF4B9774BB0F95F4BDF68D3B0DE6E98F2738`
`arm64`	—	Download	`A2587DB4245B7CDB9910F085C38097778B10D2EC31795C332FC87531AB4891CA`

128.8.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`B17E71D9E387E3A5F8F09080FF90551E77F6AB8BDD8B0163276115EA32FED419`
`x64`	—	Download	`C55C7D13A7140CB5AFA8E7D445E5BD17CF214CE85237C5D874FDA54C7EA34709`
`arm64`	—	Download	`895313DEC012CC605B682BD8030A2EA342B7BD860CBD1A9AA3BB64CF36B9E78C`

128.7.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`443C9B9CCC68C602A030978F031E0998AD5D73223D6D2D57CF8BDB8B0D33C532`
`x64`	—	Download	`CF5623F353C7160E02632D281CA63DD8989607BCF4A7712386C619D78B056CA0`
`arm64`	—	Download	`F16FCCBC70510F7C5FE03029A8D59183972FBDE3EDDDBFECB8219DD7491CFF9C`

128.6.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`005FE3318DEDCDA57116AC676CF8355C9DB0DF0DC57C88095FF5ED9B19C3A198`
`x64`	—	Download	`4F7801327C3F0B89D9F59F006348EB29B807D01A056DC4FE4F57B2C859B7E7A1`
`arm64`	—	Download	`53343E54BD7AF60AF65F774A1F02795FAF57FEA28F63491A58BEC14E58541975`

128.5.2

Architecture	Scope	Download	SHA256
`x86`	—	Download	`03206EFD44C18B99D32369178D1B22260FBC2AFFF061ACF5B1EDC560C17E13EC`
`x64`	—	Download	`E9DE242B499016C51EC024ABA69F60037C1063CE0E1556BA6E785B711F3441EA`
`arm64`	—	Download	`75C0BAF881EFDE0C650325458CF7FDEC17E5A1A35030425A8CF68110FA3D4524`

128.5.1

Architecture	Scope	Download	SHA256
`x86`	—	Download	`3D5400D714770C50B84F53EDF607D6CEBC5621CEB4F8FC5857D33753FB68DF80`
`x64`	—	Download	`11E1ABB51279474A567129683EB7C4198E4701759B718CCDB0B952B13E36C7EE`
`arm64`	—	Download	`415C22871CDE3BC4408F6EDD8444370EF4DC4545716A1707045232FC5BCEE83F`

128.5.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`4B858DD137F21CD0FBE232E081C5010AB7F099C18C1E10AAEC74D9FFC1394221`
`x64`	—	Download	`1B8CE30A7427EFBA40DEAC774F064AF6EAB990C1E94A4F95928D5559B31942EB`
`arm64`	—	Download	`A6B94D1A87B34D419CC3C2123627ACE04CAA282274D4577A56CC791EF8375E33`

128.4.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`5395C2E593EADEEEEF3AA8C4D4B305747746F6A919437E63FF55598DDA9A27F1`
`x64`	—	Download	`CE835EAEDD50B4D8F58CDE5B4B4889995C73373E34E1E8F4F592E265554EB732`
`arm64`	—	Download	`E51C66B6811A6141C82E35538D85F4D9C5CAE6F83EF4866D49CDA540EC8E291F`

128.3.1

Architecture	Scope	Download	SHA256
`x86`	—	Download	`C6A3FE8037C0C73D2999573DD8D72B06E5605188EAFC52E1474F295155F90A70`
`x64`	—	Download	`8736E189252007FB90DCD4959F5E9BEDB80292C1039FC3E53DC37FAB8FED52EE`
`arm64`	—	Download	`B7B06A2FF579AD3B46D28E47E3CD4F44D7E065AD38022BDA1FC9100D7863D761`

128.3.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`0EF62801FA435F786F8E6976DFB605ECAD00C2929C320BF056E5B63A80D17BB1`
`x64`	—	Download	`F50FA5E2E2CCD1B3AA6E0D28AFC732551EEE2164CEC2DAC1EC5A241887A7FA20`
`arm64`	—	Download	`DEC4FA9223826622FB30323C8D3808150F6768090BC89442E2950D4E5CA91194`

115.15.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`3975A622A12D49072775A93F61F5403401B001F4D1ADD4BC77107FCE6DF468E3`
`x64`	—	Download	`227B5E52369E8853CC6E9D4647E36CC04B26425B4378822D838F08DEEF5DD2E6`
`arm64`	—	Download	`5B89904E10A7FB6063E2D0D91D15D126363ECB135117D413FF1C3196953910B5`

115.14.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`6C4046963820E47B3EED1D6D239AE09369AD7B4A88D278EEE562A394A4BBC3E8`
`x64`	—	Download	`42F291B3895E0E403BD10C9F488C2AAAABDA897CE898F1123040FC7F764A5CF3`
`arm64`	—	Download	`1B0DB3443883590E6AF0DE00416FCB89C65E22E10168AC859FB7BBFC364CAEB0`

115.13.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`19C6C583160B45A5FF820649F62815E8AD16B4205912E601D0C381C7B1069D72`
`x64`	—	Download	`873FD1272BA73605034226AC4DBFBE956893BA0CC26CA1BFC5216259D5090977`
`arm64`	—	Download	`23EDA0259546FF766D0F4B23AC1623635FDFFBE07BAD29A2E57534A8D8B9809C`

115.12.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`3ACB6536B93116B9AD5F6C5707016C54B0608D88D62606AB6B3ABB23DE8CEC5A`
`x64`	—	Download	`B070F2B0872165A8FB2BCBD6E8AA861D4D3BC1FA5C5AEF431C4A7B0067AB1B32`
`arm64`	—	Download	`F1DD1544140232E838BE6D43E3B390B48D7B846C2FE0B42F4A041E10B600ACDD`

115.11.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`FB1B4E45BC11CF77E9E4BF802B7B9080DFAE4F7D4B91A6A7FB7AD8467CD1316A`
`x64`	—	Download	`9F707FADDEE132F8C71068FA7EA636B280D1C2834B556A39EA8BE290F3F0E59F`
`arm64`	—	Download	`AF900B53A7E81117A98B63ABD9D24063C6409F3D1BF984F450CC17BE5A2B3BA3`

115.10.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`48E56393763F5725D39E9D643619FB9D70A0741DE3C7EE917BF0A3B092B26472`
`x64`	—	Download	`97593F24DF7EB15CCC5FBE98F1AC8EB97700315F467D80F38F231951C386348F`
`arm64`	—	Download	`6B63425F3923EF6EDD26B92F80C9F7278A39940932272577367044283461157F`

115.9.1

Architecture	Scope	Download	SHA256
`x86`	—	Download	`44C6C8B4FC7A09D2FD300F541954640617B8A54888A68CF0739762A9F66FDAAA`
`x64`	—	Download	`950E609AEE05848E68BFCA5B91496CD622C92F3B67A648997C2AE2B489B16C92`
`arm64`	—	Download	`D1DC38A2612BAFE4A96A76A6FBCFD7D9FBA41EB95A27DF157374ACFCF752E784`

115.9.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`DEDC3509A1B3F03E0A7B36AC7DD338AA9EA2E675E057AA83C0418071A93B0F4B`
`x64`	—	Download	`6D7E357825491581B151DFB9ED13C8D0F601956036483914D06A3E42D1A35A36`
`arm64`	—	Download	`7882C39CFD4DACF44601FB253664034486C1C288D3CBC1278A88EF74F90B29A8`

115.8.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`6D0765449044AB2657B1E4DFD33A75B93591355E7A1AF3CECB7C767D0AC8F23F`
`x64`	—	Download	`0A82BB9F935A09F76316BC6EB8A54F5D996C9B257CD134EF0C4298543BAE78FC`
`arm64`	—	Download	`35D1367702D7445C54F1BBED7BA87582DE8A0A0E03FFDC9A9A8EE7B1A4719B06`

115.7.0

Architecture	Scope	Download	SHA256
`x86`	—	Download	`D5AB8440F35E89B3BA42D0207FBC56F08B9370F337DD13299F7EBDC28E017E0A`
`x64`	—	Download	`03E2671324C93F9A82627B4F3E09D6CE3B6073B18A326646F0D10A336E64E2BE`
`arm64`	—	Download	`2DEA52BD668C4EFF0E1E9252D5F3375D86C1859FC6730E75AF7996463B3CF668`

Mozilla Firefox ESR (son)

Latest 140.9.0

Installer type: nullsoft

Details

Tags

Older versions (35)

Installer type: `nullsoft`