All Versions
This page provides access to older versions of Firefox Developer Edition for Windows, including 23 previous releases available for download. Previous builds can be useful if the latest version does not work correctly on your system or if you need a compatible release for your setup. Browse the versions below and download the one that best fits your requirements.
155.0b4
Latest
87.87 MB
August 25, 2026
f3e40331…
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155.0b1
87.94 MB
August 19, 2026
1fa7d065…
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154.0b9
87.74 MB
August 12, 2026
b0195141…
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154.0b6
87.71 MiB
August 5, 2026
d16847d7…
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154.0b3
88.17 MB
July 28, 2026
be8a394c…
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153.0b13
85.65 MB
July 17, 2026
9b8d14ca…
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153.0b9
85.58 MB
July 8, 2026
87e44075…
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152.0b9
84.2 MB
June 10, 2026
87e1de7a…
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152.0b6
84.32 MB
June 3, 2026
6bac42b8…
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152.0b1
84.72 MB
May 22, 2026
d8187c7b…
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150.0b6
83.23 MB
April 8, 2026
57b234fa…
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149.0
82.71 MB
February 26, 2026
8ed83cab…
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148.0b15
83.68 MB
February 18, 2026
4680ab43…
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148.0b13
83.71 MB
February 11, 2026
0d9e0867…
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148.0
83.68 MB
February 7, 2026
dc195be6…
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148.0b10
83.71 MB
February 4, 2026
c01af9ed…
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148.0b7
84.07 MB
January 28, 2026
3a444b96…
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148.0b1
84.08 MB
January 14, 2026
ea18e575…
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147.0b7
82.32 MB
December 24, 2025
f758f003…
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147.0
82.75 MB
December 19, 2025
9dee0078…
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147.0b4
82.71 MB
December 17, 2025
a924841e…
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146.0
82.31 MB
November 27, 2025
efd5ef98…
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146.0b7
82.33 MB
November 26, 2025
05e5eb6b…
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