syncthing/CHANGELOG and syncthing Releases

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109

Latest Version

2.1.2-rc.2

Avg Release Cycle

88 days

Latest Release

0 days ago

Changelog History

Page 1

v2.1.2-rc.2 Changes
June 13, 2026
Major changes in 2.1
- Devices and folders can now be grouped in the GUI by setting the new
  group attribute.
- 👍 HTTP and HTTPS proxies with support for CONNECT can now be used, in
  ➕ addition to the existing support for SOCKS proxies (the environment
  variable all_proxy=https://...).
- Block indexing can be turned off for folders where it's more desirable to
  optimise for reduced database size and overhead than minimal transfer
  🔧 size (the blockIndexing attribute on folder configuration).
- 🔧 GUI login session duration can be configured to be longer or shorter than
  0️⃣ the default one week, or set to infinitely long. The cookie path can also
  be adjusted. (The sessionCookieDurationS and sessionCookiePath
  🔧 attributes in the GUI configuration.)
🚀 This release is also available as:
- 🔀 APT repository: https://apt.syncthing.net/
- 🐳 Docker image: docker.io/syncthing/syncthing:2.1.2-rc.2 or ghcr.io/syncthing/syncthing:2.1.2-rc.2
  🐳 ({docker,ghcr}.io/syncthing/syncthing:2 to follow just the major version)
What's Changed
🛠 Fixes
- 🛠 fix: on Windows don't allocate console if not opened inside one by @Shablone in #10726
- 🛠 fix(connections): do not report connection metrics for self (ref #10509) by @calmh in #10724
- 🛠 fix: let umask do the thing by @calmh in #10723
- 🛠 fix(fs, model): improve symlink resilience in file shortcut by @calmh in #10739
- 🛠 fix(protocol): always expect & validate block hash in requests by @calmh in #10738
- 🛠 fix(protocol): be more stringent about blocks in non-file entries by @calmh in #10737
- 🛠 fix(protocol): loosen restriction on size of directory entries by @calmh in #10743
Other
- 🏁 chore(syncthing): open URLs via Windows API instead via cmd.exe by @Shablone in #10712
- 🔀 chore(db, model): separate methods to drop a device vs its files by @imsodin in #10480
- ⚡️ build(deps): update dependencies by @calmh in #10740
🆕 New Contributors
- 🔀 @Shablone made their first contribution in #10712
Full Changelog : v2.1.1...v2.1.2-rc.2
v2.1.2-rc.1 Changes
June 12, 2026
Major changes in 2.1
- Devices and folders can now be grouped in the GUI by setting the new
  group attribute.
- 👍 HTTP and HTTPS proxies with support for CONNECT can now be used, in
  ➕ addition to the existing support for SOCKS proxies (the environment
  variable all_proxy=https://...).
- Block indexing can be turned off for folders where it's more desirable to
  optimise for reduced database size and overhead than minimal transfer
  🔧 size (the blockIndexing attribute on folder configuration).
- 🔧 GUI login session duration can be configured to be longer or shorter than
  0️⃣ the default one week, or set to infinitely long. The cookie path can also
  be adjusted. (The sessionCookieDurationS and sessionCookiePath
  🔧 attributes in the GUI configuration.)
🚀 This release is also available as:
- 🔀 APT repository: https://apt.syncthing.net/
- 🐳 Docker image: docker.io/syncthing/syncthing:2.1.2-rc.1 or ghcr.io/syncthing/syncthing:2.1.2-rc.1
  🐳 ({docker,ghcr}.io/syncthing/syncthing:2 to follow just the major version)
What's Changed
🛠 Fixes
- 🛠 fix: on Windows don't allocate console if not opened inside one by @Shablone in #10726
- 🛠 fix(connections): do not report connection metrics for self (ref #10509) by @calmh in #10724
- 🛠 fix: let umask do the thing by @calmh in #10723
- 🛠 fix(fs, model): improve symlink resilience in file shortcut by @calmh in #10739
- 🛠 fix(protocol): always expect & validate block hash in requests by @calmh in #10738
- 🛠 fix(protocol): be more stringent about blocks in non-file entries by @calmh in #10737
Other
- 🏁 chore(syncthing): open URLs via Windows API instead via cmd.exe by @Shablone in #10712
- 🔀 chore(db, model): separate methods to drop a device vs its files by @imsodin in #10480
- ⚡️ build(deps): update dependencies by @calmh in #10740
🆕 New Contributors
- 🔀 @Shablone made their first contribution in #10712
Full Changelog : v2.1.1...v2.1.2-rc.1
v2.1.1 Changes
June 02, 2026
Major changes in 2.1
- Devices and folders can now be grouped in the GUI by setting the new
  group attribute.
- 👍 HTTP and HTTPS proxies with support for CONNECT can now be used, in
  ➕ addition to the existing support for SOCKS proxies (the environment
  variable all_proxy=https://...).
- Block indexing can be turned off for folders where it's more desirable to
  optimise for reduced database size and overhead than minimal transfer
  🔧 size (the blockIndexing attribute on folder configuration).
- 🔧 GUI login session duration can be configured to be longer or shorter than
  0️⃣ the default one week, or set to infinitely long. The cookie path can also
  be adjusted. (The sessionCookieDurationS and sessionCookiePath
  🔧 attributes in the GUI configuration.)
🚀 This release is also available as:
- 🔀 APT repository: https://apt.syncthing.net/
- 🐳 Docker image: docker.io/syncthing/syncthing:2.1.1 or ghcr.io/syncthing/syncthing:2.1.1
  🐳 ({docker,ghcr}.io/syncthing/syncthing:2 to follow just the major version)
What's Changed
🛠 Fixes
- 🛠 fix(syncthing): properly upgrade via REST when Syncthing is running (fixes #10697) by @calmh in #10699
- 🛠 fix(versioner): ensure user read/write/execute on archived dirs (fixes #10532) by @calmh in #10696
- 🛠 fix(discover): only announce wildcard for TCP punching when listening on wildcard address (fixes #10503) by @calmh in #10691
- 🛠 fix(stcrashreceiver): close source loader responses on errors by @mattn in #10704
- 🛠 fix(protocol): handle zero-size requests (fixes #10709) by @calmh in #10710
Other
- 🏗 build: be explicit about workflow permissions by @calmh in #10690
- 🔀 chore(syncthing): include runtime context in GC crashes by @calmh in #10702
- 🏗 build(deps): x/net for govulncheck by @calmh in #10703
- 🔀 chore: use path/filepath for local file system paths by @mattn in #10705
🆕 New Contributors
- 🔀 @mattn made their first contribution in #10704
Full Changelog : v2.1.0...v2.1.1
v2.1.1-rc.1 Changes
May 25, 2026
Major changes in 2.1
- Devices and folders can now be grouped in the GUI by setting the new
  group attribute.
- 👍 HTTP and HTTPS proxies with support for CONNECT can now be used, in
  ➕ addition to the existing support for SOCKS proxies (the environment
  variable all_proxy=https://...).
- Block indexing can be turned off for folders where it's more desirable to
  optimise for reduced database size and overhead than minimal transfer
  🔧 size (the blockIndexing attribute on folder configuration).
- 🔧 GUI login session duration can be configured to be longer or shorter than
  0️⃣ the default one week, or set to infinitely long. The cookie path can also
  be adjusted. (The sessionCookieDurationS and sessionCookiePath
  🔧 attributes in the GUI configuration.)
🚀 This release is also available as:
- 🔀 APT repository: https://apt.syncthing.net/
- 🐳 Docker image: docker.io/syncthing/syncthing:2.1.1-rc.1 or ghcr.io/syncthing/syncthing:2.1.1-rc.1
  🐳 ({docker,ghcr}.io/syncthing/syncthing:2 to follow just the major version)
What's Changed
🛠 Fixes
- 🛠 fix(syncthing): properly upgrade via REST when Syncthing is running (fixes #10697) by @calmh in #10699
- 🛠 fix(versioner): ensure user read/write/execute on archived dirs (fixes #10532) by @calmh in #10696
- 🛠 fix(discover): only announce wildcard for TCP punching when listening on wildcard address (fixes #10503) by @calmh in #10691
- 🛠 fix(stcrashreceiver): close source loader responses on errors by @mattn in #10704
- 🛠 fix(protocol): handle zero-size requests (fixes #10709) by @calmh in #10710
Other
- 🏗 build: be explicit about workflow permissions by @calmh in #10690
- 🔀 chore(syncthing): include runtime context in GC crashes by @calmh in #10702
- 🏗 build(deps): x/net for govulncheck by @calmh in #10703
- 🔀 chore: use path/filepath for local file system paths by @mattn in #10705
🆕 New Contributors
- 🔀 @mattn made their first contribution in #10704
Full Changelog : v2.1.0...v2.1.1-rc.1
v2.1.0 Changes
May 12, 2026
Major changes in 2.1
- Devices and folders can now be grouped in the GUI by setting the new
  group attribute.
- 👍 HTTP and HTTPS proxies with support for CONNECT can now be used, in
  ➕ addition to the existing support for SOCKS proxies (the environment
  variable all_proxy=https://...).
- Block indexing can be turned off for folders where it's more desirable to
  optimise for reduced database size and overhead than minimal transfer
  🔧 size (the blockIndexing attribute on folder configuration).
- 🔧 GUI login session duration can be configured to be longer or shorter than
  0️⃣ the default one week, or set to infinitely long. The cookie path can also
  be adjusted. (The sessionCookieDurationS and sessionCookiePath
  🔧 attributes in the GUI configuration.)
🚀 This release is also available as:
- 🔀 APT repository: https://apt.syncthing.net/
- 🐳 Docker image: docker.io/syncthing/syncthing:2.1.0 or ghcr.io/syncthing/syncthing:2.1.0
  🐳 ({docker,ghcr}.io/syncthing/syncthing:2 to follow just the major version)
What's Changed
🛠 Fixes
- 🛠 fix(stdiscosrv): close file descriptor on flush error in write by @cuiweixie in #10615
- 🛠 fix(gui): disable autocomplete for folder password by @bt90 in #10342
- 🛠 fix(protocol): limit size of incoming request messages by @calmh in #10629
- 🛠 fix(gui): don't show local device under remote devices (ref #10563) by @maen-bn in #10631
- 🛠 fix(gui): order folders alphabetically and ensure local device stays hidden (ref #10563, ref #10631) by @maen-bn in #10637
- 🛠 fix(gui): fallback to folder ID when label is empty in remove dialog by @RealCharlesChia in #10657
- 🛠 fix(gui): fix tabs visually disabled but still clickable during ignore patterns setup (fixes #10634) by @JRNitre in #10651
- 🛠 fix(strelaysrv): properly use bind address for outgoing requests (fixes #10658) by @calmh in #10659
- 🛠 fix(stdiscosrv): only read certificate proxy headers with --http by @calmh in #10674
🔋 Features
- 🔀 feat(gui, config): support simple folder grouping (fixes #2070) by @maen-bn in #10563
- 🔧 feat: make http session cookie path & duration configurable by @vvaswani in #10632
- 🔀 feat(dialer): add HTTP/HTTPS proxy support via CONNECT by @luizluca in #10572
- 🔧 feat: make block indexing configurable by @calmh in #10608
Other
- 🔀 chore: remove tracking inode change time by @calmh in #10579
- 🏗 build(deps): temporarily switch to fork of gateway discovery library (fixes #10593) by @marbens-arch in #10594
- 🏗 build: extract github.ref_name expression to env mapping by @dagecko in #10624
- 🏗 build: pin 20 third-party actions to immutable commit SHAs by @dagecko in #10625
- 🏗 build: have dependabot group PRs and use cooldown by @calmh in #10630
- 🔀 chore: trivial fixes by @calmh in #10650
- 🔀 chore(model): more efficient tracking of renames during scan by @calmh in #10653
- 🔀 chore(model): deflake cluster config tests by @calmh in #10662
- 🔀 chore(model): deflake TestCompletionEmptyGlobal by @calmh in #10663
- 🔀 chore(scanner): deflake TestStopWalk by @calmh in #10664
- 🐧 build: parallelise linux builds slightly by @calmh in #10666
- 🏁 chore(api): deflake TestHTTPLogin on Windows by @calmh in #10667
- 📦 chore(api): use ldap package escape functions by @calmh in #10672
- 🏗 build: only run the periodic build jobs in the syncthing org by @calmh in #10675
- ⚡️ build(deps): update dependencies by @calmh in #10683
- 🔀 chore(model): slightly improve handling of pulling empty blocks by @calmh in #10679
- ⬆️ chore(gui): upgrade jQuery to 3.7.1 to fix CVE-2020-11022, CVE-2020-11023, CVE-2015-9251 by @Umer-Azaz in #10673
- 🔀 chore(fs): remove unused SymlinksSupported() method by @calmh in #10684
🆕 New Contributors
- 🔀 @cuiweixie made their first contribution in #10615
- 🔀 @dagecko made their first contribution in #10624
- 🔀 @maen-bn made their first contribution in #10563
- 🔀 @RealCharlesChia made their first contribution in #10657
- 🔀 @JRNitre made their first contribution in #10651
- 🔀 @vvaswani made their first contribution in #10632
- 🔀 @luizluca made their first contribution in #10572
- 🔀 @Umer-Azaz made their first contribution in #10673
Full Changelog : v2.0.16...v2.1.0
v2.1.0-rc.2 Changes
May 09, 2026
Major changes in 2.1
- Devices and folders can now be grouped in the GUI by setting the new
  group attribute.
- 👍 HTTP and HTTPS proxies with support for CONNECT can now be used, in
  ➕ addition to the existing support for SOCKS proxies (the environment
  variable all_proxy=https://...).
- Block indexing can be turned off for folders where it's more desirable to
  optimise for reduced database size and overhead than minimal transfer
  🔧 size (the blockIndexing attribute on folder configuration).
- 🔧 GUI login session duration can be configured to be longer or shorter than
  0️⃣ the default one week, or set to infinitely long. The cookie path can also
  be adjusted. (The sessionCookieDurationS and sessionCookiePath
  🔧 attributes in the GUI configuration.)
🚀 This release is also available as:
- 🔀 APT repository: https://apt.syncthing.net/
- 🐳 Docker image: docker.io/syncthing/syncthing:2.1.0-rc.2 or ghcr.io/syncthing/syncthing:2.1.0-rc.2
  🐳 ({docker,ghcr}.io/syncthing/syncthing:2 to follow just the major version)
What's Changed
🛠 Fixes
- 🛠 fix(stdiscosrv): close file descriptor on flush error in write by @cuiweixie in #10615
- 🛠 fix(gui): disable autocomplete for folder password by @bt90 in #10342
- 🛠 fix(protocol): limit size of incoming request messages by @calmh in #10629
- 🛠 fix(gui): don't show local device under remote devices (ref #10563) by @maen-bn in #10631
- 🛠 fix(gui): order folders alphabetically and ensure local device stays hidden (ref #10563, ref #10631) by @maen-bn in #10637
- 🛠 fix(gui): fallback to folder ID when label is empty in remove dialog by @RealCharlesChia in #10657
- 🛠 fix(gui): fix tabs visually disabled but still clickable during ignore patterns setup (fixes #10634) by @JRNitre in #10651
- 🛠 fix(strelaysrv): properly use bind address for outgoing requests (fixes #10658) by @calmh in #10659
- 🛠 fix(stdiscosrv): only read certificate proxy headers with --http by @calmh in #10674
🔋 Features
- 🔀 feat(gui, config): support simple folder grouping (fixes #2070) by @maen-bn in #10563
- 🔧 feat: make http session cookie path & duration configurable by @vvaswani in #10632
- 🔀 feat(dialer): add HTTP/HTTPS proxy support via CONNECT by @luizluca in #10572
- 🔧 feat: make block indexing configurable by @calmh in #10608
Other
- 🔀 chore: remove tracking inode change time by @calmh in #10579
- 🏗 build(deps): temporarily switch to fork of gateway discovery library (fixes #10593) by @marbens-arch in #10594
- 🏗 build: extract github.ref_name expression to env mapping by @dagecko in #10624
- 🏗 build: pin 20 third-party actions to immutable commit SHAs by @dagecko in #10625
- 🏗 build: have dependabot group PRs and use cooldown by @calmh in #10630
- 🔀 chore: trivial fixes by @calmh in #10650
- 🔀 chore(model): more efficient tracking of renames during scan by @calmh in #10653
- 🔀 chore(model): deflake cluster config tests by @calmh in #10662
- 🔀 chore(model): deflake TestCompletionEmptyGlobal by @calmh in #10663
- 🔀 chore(scanner): deflake TestStopWalk by @calmh in #10664
- 🐧 build: parallelise linux builds slightly by @calmh in #10666
- 🏁 chore(api): deflake TestHTTPLogin on Windows by @calmh in #10667
- 📦 chore(api): use ldap package escape functions by @calmh in #10672
- 🏗 build: only run the periodic build jobs in the syncthing org by @calmh in #10675
- ⚡️ build(deps): update dependencies by @calmh in #10683
- 🔀 chore(model): slightly improve handling of pulling empty blocks by @calmh in #10679
- ⬆️ chore(gui): upgrade jQuery to 3.7.1 to fix CVE-2020-11022, CVE-2020-11023, CVE-2015-9251 by @Umer-Azaz in #10673
- 🔀 chore(fs): remove unused SymlinksSupported() method by @calmh in #10684
🆕 New Contributors
- 🔀 @cuiweixie made their first contribution in #10615
- 🔀 @dagecko made their first contribution in #10624
- 🔀 @maen-bn made their first contribution in #10563
- 🔀 @RealCharlesChia made their first contribution in #10657
- 🔀 @JRNitre made their first contribution in #10651
- 🔀 @vvaswani made their first contribution in #10632
- 🔀 @luizluca made their first contribution in #10572
- 🔀 @Umer-Azaz made their first contribution in #10673
Full Changelog : v2.0.16...v2.1.0-rc.2
v2.1.0-rc.1 Changes
April 26, 2026
Major changes in 2.1
- Devices and folders can now be grouped in the GUI by setting the new
  group attribute.
- 👍 HTTP and HTTPS proxies with support for CONNECT can now be used, in
  ➕ addition to the existing support for SOCKS proxies (the environment
  variable all_proxy=https://...).
- Block indexing can be turned off for folders where it's more desirable to
  optimise for reduced database size and overhead than minimal transfer
  🔧 size (the blockIndexing attribute on folder configuration).
- 🔧 GUI login session duration can be configured to be longer or shorter than
  0️⃣ the default one week, or set to infinitely long. The cookie path can also
  be adjusted. (The sessionCookieDurationS and sessionCookiePath
  🔧 attributes in the GUI configuration.)
🚀 This release is also available as:
- 🔀 APT repository: https://apt.syncthing.net/
- 🐳 Docker image: docker.io/syncthing/syncthing:2.1.0-rc.1 or ghcr.io/syncthing/syncthing:2.1.0-rc.1
  🐳 ({docker,ghcr}.io/syncthing/syncthing:2 to follow just the major version)
What's Changed
🛠 Fixes
- 🛠 fix(stdiscosrv): close file descriptor on flush error in write by @cuiweixie in #10615
- 🛠 fix(gui): disable autocomplete for folder password by @bt90 in #10342
- 🛠 fix(protocol): limit size of incoming request messages by @calmh in #10629
- 🛠 fix(gui): don't show local device under remote devices (ref #10563) by @maen-bn in #10631
- 🛠 fix(gui): order folders alphabetically and ensure local device stays hidden (ref #10563, ref #10631) by @maen-bn in #10637
- 🛠 fix(gui): fallback to folder ID when label is empty in remove dialog by @RealCharlesChia in #10657
- 🛠 fix(gui): fix tabs visually disabled but still clickable during ignore patterns setup (fixes #10634) by @JRNitre in #10651
- 🛠 fix(strelaysrv): properly use bind address for outgoing requests (fixes #10658) by @calmh in #10659
🔋 Features
- 🔀 feat(gui, config): support simple folder grouping (fixes #2070) by @maen-bn in #10563
- 🔧 feat: make http session cookie path & duration configurable by @vvaswani in #10632
- 🔀 feat(dialer): add HTTP/HTTPS proxy support via CONNECT by @luizluca in #10572
- 🔧 feat: make block indexing configurable by @calmh in #10608
Other
- 🔀 chore: remove tracking inode change time by @calmh in #10579
- 🏗 build(deps): temporarily switch to fork of gateway discovery library (fixes #10593) by @marbens-arch in #10594
- 🏗 build: extract github.ref_name expression to env mapping by @dagecko in #10624
- 🏗 build: pin 20 third-party actions to immutable commit SHAs by @dagecko in #10625
- 🏗 build: have dependabot group PRs and use cooldown by @calmh in #10630
- 🔀 chore: trivial fixes by @calmh in #10650
- 🔀 chore(model): more efficient tracking of renames during scan by @calmh in #10653
- 🔀 chore(model): deflake cluster config tests by @calmh in #10662
- 🔀 chore(model): deflake TestCompletionEmptyGlobal by @calmh in #10663
- 🔀 chore(scanner): deflake TestStopWalk by @calmh in #10664
- 🐧 build: parallelise linux builds slightly by @calmh in #10666
- 🏁 chore(api): deflake TestHTTPLogin on Windows by @calmh in #10667
🆕 New Contributors
- 🔀 @cuiweixie made their first contribution in #10615
- 🔀 @dagecko made their first contribution in #10624
- 🔀 @maen-bn made their first contribution in #10563
- 🔀 @RealCharlesChia made their first contribution in #10657
- 🔀 @JRNitre made their first contribution in #10651
- 🔀 @vvaswani made their first contribution in #10632
- 🔀 @luizluca made their first contribution in #10572
Full Changelog : v2.0.16...v2.1.0-rc.1
v2.0.16 Changes
April 07, 2026
Major changes in 2.0
- Database backend switched from LevelDB to SQLite. There is a migration on
  first launch which can be lengthy for larger setups. The new database is
  easier to understand and maintain and, hopefully, less buggy.
- 🌲 The logging format has changed to use structured log entries (a message
  🌲 plus several key-value pairs). Additionally, we can now control the log
  📦 level per package, and a new log level WARNING has been inserted between
  ⚠ INFO and ERROR (which was previously known as WARNING...). The INFO level
  🔀 has become more verbose, indicating the sync actions taken by Syncthing. A
  🆕 new command line flag --log-level sets the default log level for all
  ⚡️ packages, and the STTRACE environment variable and GUI has been updated
  📦 to set log levels per package. The --verbose and --logflags command
  🚚 line options have been removed and will be ignored if given.
- ✂ Deleted items are no longer kept forever in the database, instead they are
  forgotten after fifteen months. If your use case require deletes to take
  effect after more than a fifteen month delay, set the
  💻 --db-delete-retention-interval command line option or corresponding
  environment variable to zero, or a longer time interval of your choosing.
- 📜 Modernised command line options parsing. Old single-dash long options are
  👍 no longer supported, e.g. -home must be given as --home. Some options
  have been renamed, others have become subcommands. All serve options are
  👀 now also accepted as environment variables. See syncthing --help and
  🔀 syncthing serve --help for details.
- 👍 Rolling hash detection of shifted data is no longer supported as this
  🔀 effectively never helped. Instead, scanning and syncing is faster and more
  efficient without it.
- 0️⃣ A "default folder" is no longer created on first startup.
- 0️⃣ Multiple connections are now used by default between v2 devices. The new
  📇 default value is to use three connections: one for index metadata and two
  for data exchange.
- The following platforms unfortunately no longer get prebuilt binaries for
  🔀 download at syncthing.net and on GitHub, due to complexities related to
  cross compilation with SQLite:
- The handling of conflict resolution involving deleted files has changed. A
  ✂ delete can now be the winning outcome of conflict resolution, resulting in
  🚚 the deleted file being moved to a conflict copy.
🚀 This release is also available as:
- 🔀 APT repository: https://apt.syncthing.net/
- 🐳 Docker image: docker.io/syncthing/syncthing:2.0.16 or ghcr.io/syncthing/syncthing:2.0.16
  🐳 ({docker,ghcr}.io/syncthing/syncthing:2 to follow just the major version)
What's Changed
🛠 Fixes
- 🛠 fix(protocol): verify compressed message length before decompression by @calmh in #10595
- 🛠 fix(systemd): support overrides for syncOwnership by @Valloric in #10602
- 🛠 fix(systemd): add back chown allowed syscalls by @Valloric in #10605
Other
- 🔀 chore(config, connections): use same reconnection interval for QUIC and TCP (fixes #10507) by @marbens-arch in #10573
- ⚡️ build(deps): update dependencies by @calmh in #10588
- 🔀 chore(sqlite): reduce max open connections, keep them open permanently (fixes #10592) by @calmh in #10596
Full Changelog : v2.0.15...v2.0.16
v2.0.16-rc.2 Changes
March 13, 2026
Major changes in 2.0
- Database backend switched from LevelDB to SQLite. There is a migration on
  first launch which can be lengthy for larger setups. The new database is
  easier to understand and maintain and, hopefully, less buggy.
- 🌲 The logging format has changed to use structured log entries (a message
  🌲 plus several key-value pairs). Additionally, we can now control the log
  📦 level per package, and a new log level WARNING has been inserted between
  ⚠ INFO and ERROR (which was previously known as WARNING...). The INFO level
  🔀 has become more verbose, indicating the sync actions taken by Syncthing. A
  🆕 new command line flag --log-level sets the default log level for all
  ⚡️ packages, and the STTRACE environment variable and GUI has been updated
  📦 to set log levels per package. The --verbose and --logflags command
  🚚 line options have been removed and will be ignored if given.
- ✂ Deleted items are no longer kept forever in the database, instead they are
  forgotten after fifteen months. If your use case require deletes to take
  effect after more than a fifteen month delay, set the
  💻 --db-delete-retention-interval command line option or corresponding
  environment variable to zero, or a longer time interval of your choosing.
- 📜 Modernised command line options parsing. Old single-dash long options are
  👍 no longer supported, e.g. -home must be given as --home. Some options
  have been renamed, others have become subcommands. All serve options are
  👀 now also accepted as environment variables. See syncthing --help and
  🔀 syncthing serve --help for details.
- 👍 Rolling hash detection of shifted data is no longer supported as this
  🔀 effectively never helped. Instead, scanning and syncing is faster and more
  efficient without it.
- 0️⃣ A "default folder" is no longer created on first startup.
- 0️⃣ Multiple connections are now used by default between v2 devices. The new
  📇 default value is to use three connections: one for index metadata and two
  for data exchange.
- The following platforms unfortunately no longer get prebuilt binaries for
  🔀 download at syncthing.net and on GitHub, due to complexities related to
  cross compilation with SQLite:
- The handling of conflict resolution involving deleted files has changed. A
  ✂ delete can now be the winning outcome of conflict resolution, resulting in
  🚚 the deleted file being moved to a conflict copy.
🚀 This release is also available as:
- 🔀 APT repository: https://apt.syncthing.net/
- 🐳 Docker image: docker.io/syncthing/syncthing:2.0.16-rc.2 or ghcr.io/syncthing/syncthing:2.0.16-rc.2
  🐳 ({docker,ghcr}.io/syncthing/syncthing:2 to follow just the major version)
What's Changed
🛠 Fixes
- 🛠 fix(protocol): verify compressed message length before decompression by @calmh in #10595
- 🛠 fix(systemd): support overrides for syncOwnership by @Valloric in #10602
- 🛠 fix(systemd): add back chown allowed syscalls by @Valloric in #10605
Other
- 🔀 chore(config, connections): use same reconnection interval for QUIC and TCP (fixes #10507) by @marbens-arch in #10573
- ⚡️ build(deps): update dependencies by @calmh in #10588
- 🔀 chore(sqlite): reduce max open connections, keep them open permanently (fixes #10592) by @calmh in #10596
Full Changelog : v2.0.15...v2.0.16-rc.2
v2.0.16-rc.1 Changes
March 03, 2026
Major changes in 2.0
- Database backend switched from LevelDB to SQLite. There is a migration on
  first launch which can be lengthy for larger setups. The new database is
  easier to understand and maintain and, hopefully, less buggy.
- 🌲 The logging format has changed to use structured log entries (a message
  🌲 plus several key-value pairs). Additionally, we can now control the log
  📦 level per package, and a new log level WARNING has been inserted between
  ⚠ INFO and ERROR (which was previously known as WARNING...). The INFO level
  🔀 has become more verbose, indicating the sync actions taken by Syncthing. A
  🆕 new command line flag --log-level sets the default log level for all
  ⚡️ packages, and the STTRACE environment variable and GUI has been updated
  📦 to set log levels per package. The --verbose and --logflags command
  🚚 line options have been removed and will be ignored if given.
- ✂ Deleted items are no longer kept forever in the database, instead they are
  forgotten after fifteen months. If your use case require deletes to take
  effect after more than a fifteen month delay, set the
  💻 --db-delete-retention-interval command line option or corresponding
  environment variable to zero, or a longer time interval of your choosing.
- 📜 Modernised command line options parsing. Old single-dash long options are
  👍 no longer supported, e.g. -home must be given as --home. Some options
  have been renamed, others have become subcommands. All serve options are
  👀 now also accepted as environment variables. See syncthing --help and
  🔀 syncthing serve --help for details.
- 👍 Rolling hash detection of shifted data is no longer supported as this
  🔀 effectively never helped. Instead, scanning and syncing is faster and more
  efficient without it.
- 0️⃣ A "default folder" is no longer created on first startup.
- 0️⃣ Multiple connections are now used by default between v2 devices. The new
  📇 default value is to use three connections: one for index metadata and two
  for data exchange.
- The following platforms unfortunately no longer get prebuilt binaries for
  🔀 download at syncthing.net and on GitHub, due to complexities related to
  cross compilation with SQLite:
- The handling of conflict resolution involving deleted files has changed. A
  ✂ delete can now be the winning outcome of conflict resolution, resulting in
  🚚 the deleted file being moved to a conflict copy.
🚀 This release is also available as:
- 🔀 APT repository: https://apt.syncthing.net/
- 🐳 Docker image: docker.io/syncthing/syncthing:2.0.16-rc.1 or ghcr.io/syncthing/syncthing:2.0.16-rc.1
  🐳 ({docker,ghcr}.io/syncthing/syncthing:2 to follow just the major version)
What's Changed
Other
- 🔀 chore(config, connections): use same reconnection interval for QUIC and TCP (fixes #10507) by @marbens-arch in #10573
Full Changelog : v2.0.15...v2.0.16-rc.1

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syncthing changelog

Open Source Continuous File Synchronization

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Major changes in 2.1

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Other

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Major changes in 2.0

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Major changes in 2.0

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Major changes in 2.0

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Other

Changelog History

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