What's Changed

Security

• Fix CVE-2026-26127: bump .NET runtime from 10.0.0 to 10.0.4 by Ben Hillis (@benhillis) in #14421

Bug Fixes

• virtiofs: fix elevated virtiofs access when VM is launched by an elevated user by Ben Hillis (@benhillis) in #13877
• Resolve issue with config file writing sections outside of their expected header by Ben Hillis (@benhillis) in #13898
• Resolve issue with buttons on notifications not working correctly by Ben Hillis (@benhillis) in #13921
• [GH 13837] Remove trailing slash from $XDG_RUNTIME_DIR by Ben Hillis (@benhillis) in #13929
• Fix issue with svccommio incorrectly resetting console state in the move operator by Ben Hillis (@benhillis) in #14083
• Fix excessive screen updates in progress indicators by @Copilot in #14206
• Fix 4 code bugs: substr off-by-one, HANDLE* cast, TOCTOU GetLastError, sun_path overflow by Ben Hillis (@benhillis) in #14297
• Fix wsl stuck when misconfigured cifs mount presents by Feng Wang (@chemwolf6922) in #14466
• Accessibility: After selecting from the navigation list, keyboard focus is now transferred to page content by ssparach in #14289

Features & Improvements

• virtiofs: add support for statx syscall by Ben Hillis (@benhillis) in #14087
• virtiofs: add support for mounting directories (not just full volumes) by Ben Hillis (@benhillis) in #14073
• virtio networking: add support for ipv6 by Ben Hillis (@benhillis) in #14350
• Enable DNS tunneling for VirtioProxy networking mode by Ben Hillis (@benhillis) in #14461
• DNS: switch to using 'search' instead of obsolete 'domain' by Ben Hillis (@benhillis) in #14133
• Track bind syscall when port is 0 by Daman Mulye (@damanm24) in #14333
• Add WindowsTerminal.enabled to the list of config keys for wsl-distribution.conf by Blue (@OneBlue) in #14021
• Disable the process creation cursor animation by default by Blue (@OneBlue) in #14293
• Improved VirtioProxy networking and VirtioFS posix compatibility by Ben Hillis (@benhillis) in #14198
• Updated enable virtualization error message by Craig Loewen (@craigloewen-msft) in #14110
• Mask NetworkManager-wait-online.service during boot by Dimitris Chatzis (@dhtzs) in #14272
• Add iptables to list of apps to install in WSL by Andre Muezerie (@andremueiot) in #14459

Developer Experience

• Enable VS 2026 solution generation and improve ARM64 developer experience by Ben Hillis (@benhillis) in #14283
• Refactor: Use TryParse in view models for safer numeric input parsing by Dimitris Chatzis (@dhtzs) in #14323

New Contributors

• Salman Muin Kayser Chishti (@salmanmkc) made their first contribution in #13896
• Masanari Mizuno (@mznms) made their first contribution in #13950
• rfu-cn made their first contribution in #14022
• Andy Sterland (@andysterland) made their first contribution in #14160
• Dimitris Chatzis (@dhtzs) made their first contribution in #14272
• ssparach made their first contribution in #14289
• Daman Mulye (@damanm24) made their first contribution in #14333
• Andre Muezerie (@andremueiot) made their first contribution in #14459
• Feng Wang (@chemwolf6922) made their first contribution in #14466

Full Changelog: 2.7.0...2.7.1

• Fix an issue causing wslg shortcut generation to fail (solves: #1388)

What's Changed

• Remove unused LXSS_DISTRO_FLAGS_WSLCORE_MODE by Blue (@OneBlue) in #13603
• Add logic to handle partial hvsocket writes and additional logging by Blue (@OneBlue) in #13602
• Update Microsoft.NETCore.App.Runtime packages version with fix for CVE-2025-55248 by Ben Hillis (@benhillis) in #13607
• Update Microsoft.WSL.DeviceHost package to version 1.0.0-20251015.1 by Ben Hillis (@benhillis) in #13606
• Fix edge cases around .vhd support by Ben Hillis (@benhillis) in #13061
• Fix WslDistributionConfig to not default-initialize optional fields by Ben Hillis (@benhillis) in #13629
• Make the sample WSL_POST_BUILD_COMMAND more resilient by Blue (@OneBlue) in #13652
• wslsettings: allow OOBE window to close with escape key by Ben Hillis (@benhillis) in #13686
• wslsettings: fix OOBE text truncation at 200% text scaling by Ben Hillis (@benhillis) in #13693
• wslsettings: add underlines to links in about page by Ben Hillis (@benhillis) in #13703
• .clang-format: add InsertBraces: true and minor fix to FormatSource.ps1 by Ben Hillis (@benhillis) in #13712
• wslsettings: ensure selected setting is auto-expanded and selected by Ben Hillis (@benhillis) in #13689
• build: fix minor compiler errors when building with VS2026 by Ben Hillis (@benhillis) in #13744
• Mask systemd-networkd-wait-online.service during boot by Blue (@OneBlue) in #13611
• deps: update a number of NuGet packages to the latest available versions by Ben Hillis (@benhillis) in #13728
• Add *.slnx to .gitignore by Blue (@OneBlue) in #13754
• Fix service crash when collecting a linux crash dump when maxCrashDumpCount is set to 0 by Blue (@OneBlue) in #13755
• cleanup: VirtioNetworking refactoring by Ben Hillis (@benhillis) in #13760
• cleanup: switch from Microsoft::WRL::ComPtr to wil::com_ptr by Ben Hillis (@benhillis) in #13767
• cleanup: VirtioNetworking refactoring to be more portable by Ben Hillis (@benhillis) in #13783
• cleanup: remove invalid m_deviceHostSupport checks by Ben Hillis (@benhillis) in #13787
• cleanup: move common functionality out of service exe by Ben Hillis (@benhillis) in #13788
• test: improve test logging infra by Ben Hillis (@benhillis) in #13811
• virtio networking: fix two minor issues by Ben Hillis (@benhillis) in #13810
• Update Microsoft.WSL.Kernel to 6.6.114.1 by Mitchell Levy (@chessturo) in #13812
• test: minor updates to improve virtiofs pass rate by Ben Hillis (@benhillis) in #13815
• Update Microsoft.WSL.DeviceHost to remove lxutil.dll dependency by Ben Hillis (@benhillis) in #13633
• cleanup: add handling for product-specific virtio networking class IDs. by Ben Hillis (@benhillis) in #13822
• wslsettings: ensure text in the oobe window properly wraps by Ben Hillis (@benhillis) in #13823
• Add back WSL2_VM_ID environment variable to the system distro. by Ben Hillis (@benhillis) in #13835
• CI: Switch away from -dev versions of MS-RDX-MRO.windows-store-publish tasks by Ben Hillis (@benhillis) in #13841
• Fix typo in Dutch translations by Fabio Ros (@frosit) in #13853
• test: add simple virtio proxy networking tests and move mirrored tests to their own class by Ben Hillis (@benhillis) in #13838
• CI: update issue for wslsettings being rebuilt and signature being overwritten by Ben Hillis (@benhillis) in #13855

New Contributors

• AlmaLinux Autobot (@almalinuxautobot) made their first contribution in #13653
• Fabio Ros (@frosit) made their first contribution in #13853

Full Changelog: 2.6.2...2.7.0

What's Changed

• Add comprehensive GitHub Copilot instructions for WSL development by @Copilot in #13352
• wslg: update to latest version which uses wslinfo --vm-id instead of env var by Ben Hillis (@benhillis) in #13361
• Remove hardcoded --cd ~ from WSL terminal fragment profiles to support Terminal's startingDirectory by @Copilot in #13350
• Disable HTTP cache when reading the distribution manifest over HTTP by Blue (@OneBlue) in #13383
• Relaunch the debug shell if user exits it. by Ben Hillis (@benhillis) in #13379
• Update Microsoft .NET and AppSDK nuget packages. by Ben Hillis (@benhillis) in #13450
• logging: add more settings to vm create begin / end events. by Ben Hillis (@benhillis) in #13412
• Fix: Always use 'WSLInterop` as the binfmt name by Ben Hillis (@benhillis) in #13467
• Notice change from build: 129899373 by Ben Hillis (@benhillis) in #13475
• Set TargetLatestRuntimePatch to false to prevent automatic framework version increases by Blue (@OneBlue) in #13483
• Add WININET_E_TIMEOUT to g_commonErrors by Blue (@OneBlue) in #13506
• fix: UnboundLocalError in create-release.py by rodeka (@rodeka) in #13499
• Add logic to force terminate the VM if the session lock can't be acquired for 30 seconds when the service stops by Blue (@OneBlue) in #13493
• Fix incorrect timeout causing WSL1 OOBE to fail if the OOBE process takes longer than 30 seconds by Blue (@OneBlue) in #13517
• Create a persistent install log file to help root cause package upgrade issues by Blue (@OneBlue) in #13500
• fix: correct sparse VHD command to include true by Junhao Liao (@junhaoliao) in #13512
• Introduce a new wsl.conf config value to allow distributions to opt-in to cgroupv1 mounts by Blue (@OneBlue) in #13546
• Add more verbose output to bsdtar to help root cause 'ImportExportStdout' test failures by Blue (@OneBlue) in #13555
• Respect the distribution manifest ordering when listing distributions by Blue (@OneBlue) in #13561
• Update the initramfs generation logic to set 755 permissions on /init by Blue (@OneBlue) in #13567
• Update WSLg to 1.0.71 by Hideyuki Nagase (@hideyukn88) in #13570
• Implement clean instance terminate when using systemd by Ben Hillis (@benhillis) in #13552
• Fix potential service deadlock when plugin returns an error from OnVmStarted by Blue (@OneBlue) in #13569
• Improve logging when socket operations fail by Blue (@OneBlue) in #13579

New Contributors

• Kevin Jagodic (@jkvn) made their first contribution in #13355
• @Copilot made their first contribution in #13352
• rodeka (@rodeka) made their first contribution in #13499
• Junhao Liao (@junhaoliao) made their first contribution in #13512
• Hideyuki Nagase (@hideyukn88) made their first contribution in #13570

Full Changelog: 2.5.10...2.6.2

What's Changed

• Fix json invalid utf-8 from IconPath by Carlos Nihelton (@CarlosNihelton) in #13340
• Switch wslinfo --vm-id to not rely on presence of VM ID environment variable by Ben Hillis (@benhillis) in #13318
• Fixed CVE-2025-53788 (Details to be published on Aug 12th)
• install: do not attempt to install distros if a reboot is required by Ben Hillis (@benhillis) in #13298
• wslsettings: appropriately set heading level for PageHeaderTextBlockStyle by Ben Hillis (@benhillis) in #13257
• Expose the VM ID inside user distros by Craig Gumbley (@chelnak) in #13212
• Don't display a warning when the binfmt process doesn't have a controlling terminal by Blue (@OneBlue) in #13176
• Fix C1010070 compilation error in wslsettings by Mlekow (@Mlekow) in #12928
• Look up systemctl from $PATH for user session checks by K900 in #13157
• Update Microsoft.RemoteDesktop.Client.MSRDC.SessionHost to version 1.2.6353 by Ben Hillis (@benhillis) in #13271

New Contributors

• Mlekow (@Mlekow) made their first contribution in #12928
• K900 made their first contribution in #13157
• g0tmi1k (@g0tmi1k) made their first contribution in #13182
• Craig Gumbley (@chelnak) made their first contribution in #13212
• Kiran Cheparthi (@kirancheparthi) made their first contribution in #13240
• S. M. Mohiuddin Khan Shiam (@mohiuddin-khan-shiam) made their first contribution in #13201
• Jerry Jones (@stratusjerry) made their first contribution in #13314
• Carlos Nihelton (@CarlosNihelton) made their first contribution in #13340

Full Changelog: 2.6.0...2.6.1

• Fixed CVE-2025-53788 (Details to be published on Aug 12th)

• First open source release of WSL
• Various stability improvements
• Update localized strings
• Don't throw when unregistering a distro that has a BasePath that doesn't exist (solves #13004)
• Fix distribution download failing if the URL contains parameters
• Fix various issues with systemd user sessions (solves #13053)
• Fix wslsettings crash when invoked from wslservice
• Set MOVEFILE_WRITE_THROUGH when moving distribution VHD's (solves #13055)
• Discard BOM header when parsing the Windows 'hosts' file (solves #9642)
• Correctly report corrupted disks when mount() fails with EUCLEAN (solves #13074)
• Don't use a ? prefix when resolving the distribution location (solves #13064)
• Solve potential failure while downloading a distribution if LastError is non zero

• Update to WSL Kernel 6.6.87.2 (solves #12987, #12983, #13031)
• Merged PR 13054145: Make the post import distribution checks less strict (Solves #13036)

• Reduce file descriptor soft limit to 10240 (solves #12985)
• Add a systemd override binfmt-support.service to protect wsl's interop entry (solves #13000)

• Update Linux kernel to 6.6.87.1-1
• Update WindowsAppSDK to version 1.7.250401001
• Increase the soft file descriptor limit to 1024 * 1024 (solves #12837)
• Add logic to detect when an imported distribution is invalid
• Move Linux side warnings to new warning infrastructure
• Fix potential deadlock when converting a distribution to WSL1 or WSL2
• Fix download logic to download to a file instead of in memory (solves #12805)
• Use a systemd-generator to create the wslg and binfmt units