Transmission 4.1.2

Transmission offers fast and efficient BitTorrent downloads with support for peer exchange, tracker editing, webseeds, and speed controls.

Razvan Serea News Reporter Neowin · Jun 3, 2026 23:00 EDT with 0 comments

Transmission

Transmission is a fast, easy-to-use bittorrent client with support for encryption, a web interface, peer exchange, magnet links, DHT, µTP, UPnP and NAT-PMP port forwarding, webseed support, watch directories, tracker editing, global and per-torrent speed limits, and more.

Transmission has one of the lowest memory & resource footprints of any major BitTorrent client. Transmission's light overhead is one reason why it is so well suited for home NAS and media servers. Having been used by Western Digital, Zyxel and Belkin, Transmission gives truly impressive performance on almost any compatible hardware.

Transmission is an open source, volunteer-based project. Unlike some BitTorrent clients, Transmission doesn't play games with its users to make money.

Transmission doesn't bundle toolbars, pop-up ads, flash ads, twitter tools, or anything else.
It doesn't hold some features back for a payware version.
Its source code is available for anyone to review.
Transmission doesn't track users, the website and forums have no third-party ads or analytics.

Transmission 4.1.2 changelog:

This is Transmission 4.1.2, a bugfix release. It fixes 20+ bugs and has a few performance improvements too. All users are encouraged to upgrade to this version.

Highlights

Fixed 4.1.0 bug that could cause duplicate HTTP announces to be sent to trackers. (#8639)

All Platforms

Reject benc data that has invalid characters. (#8577)
Fixed a bug during the startup sequence where if one torrent failed to parse, subsequent torrents would also fail. (#8605)
Fixed a bug that stalled some downloads at 99%. (#8654)
Fixed a 4.1.0 upgrade bug that could overwrite utp_enabled and tcp_enabled settings. (#8658)
Fixed a 4.1.0 crash that could happen when a peer supplied reqq value smaller than 32 in LTEP handshake. (#8713)
Fixed a 4.1.0 regression that periodically wrote upload & download stats to disk even when Transmission had been idle since the last write, preventing the stats file's disk from hibernating while idle. (#8722)
Fixed a 4.1.0 bug that prevented TCP peer connections on some systems. (#8748)
Added safeguards to HTTP responses to prevent clickjacking. (#8749)
Fixed edge case that didn't preserve the order of a batch of torrents when moving their queue position up or down. (#8782)
Added sanitization for UTF-8 client names provided by peers during handshake. (#8809)
Stopped appending redundant zeros to blocklist files when downloaded from a remote URL. (#8819)
Fixed a build failure that occurred when building with link-time optimization. (#8540)

macOS Client

Fixed a 4.1.0 memory leak. (#8613)
Fixed navigation focus issues in the Inspector. (#8792, #8810)
Improved UI code to use less CPU. (#8832, #8833, #8835, #8836, #8842, #8846, #8851)

Qt Client

Fixed a 4.1.0 crash when parsing some RPC responses from older Transmission servers. (#8618)
Fixed a 4.1.0 bug that saved both deprecated and current settings names to settings.json. (#8623)

GTK Client

Fixed a 4.1.0 bug that did not show translated logging level strings. (#8611)
Fixed a 4.1.0 crash when toggling alternative speed limits. (#8709)

Web Client

Fixed a 4.1.0 bug that displayed timestamps in some dropdowns as 6.75:45 instead of 6:45. (#8624)
Fixed a bug that could show incorrect torrent status when reconnecting to the server after a lost connection. (#8780, #8783)

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