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What's new

These are the most important features you'll get by upgrading from 2026.3.15878 to 2026.4.6298

Octopus 2026.4 2 breaking changes

No highlights for 2026.4

Breaking changes
  • 10262 - Tag set scope of Feature Toggle has been renamed to Feature Flag
  • 10261 - Tentacle communication timeouts in Machine Policies are limited to 30 minutes

Release notes

These are the features and fixes you'll get by upgrading from 2026.3.15878 to 2026.4.6298.

Changes in Octopus Server 2026.4.6298

  • 10289 - Fixed an issue where the GitCredentialView permission was erroneously required in Platform Hub process & project templates

Changes in Octopus Server 2026.4.6245

  • 10288 - Users with only space-scoped EventView permission can now always access the Audit Page
  • 10287 - Fix pipe character splitting file paths in process editor
  • 10285 - Multi-node support for polling tentacles
  • 10284 - Capture Actor and ActorType for manual interventions submitted by AI agents

Changes in Octopus Server 2026.4.6079

  • 10281 - Fixed issue with account/certificate/workerpool selection showing empty lists when running a step template outside of a project

Changes in Octopus Server 2026.4.6001

  • 10280 - Updated Certificate forms to use our new modern components

Changes in Octopus Server 2026.4.5416

  • 10274 - Fixes a permission issue with webhook trigger with runbooks in git using a shared secret

Changes in Octopus Server 2026.4.5335

  • 10273 - Added Actor details to the input policy, exposing Id, Username and Type

Changes in Octopus Server 2026.4.5217

  • 10270 - Remove misleading "Step injection is not supported for child actions" error when Kubernetes steps run as child steps
  • 10271 - Don't allow Commit to Git and Wait for Argo CD Applications steps to be configured as child steps

Changes in Octopus Server 2026.4.5100

  • 10260 - Remove experimental configuration feature 'Dashboard performance optimization'

Changes in Octopus Server 2026.4.5070

  • 10268 - Updated Argo CD Instances API and page to include pagination. Note that by default now, the API endpoint will return the first 30 instances
  • 10253 - Apply automatic deprovisioning rules task is only run for spaces where there are ephemeral environments, reducing the noise in task views when this feature is not used
  • 10266 - Block client-side telemetry calls when telemetry disabled
  • 10267 - Tasks pages now feature a refreshed UI
  • 10265 - Fix deferred package references being dropped in process template steps. This reverts a breaking change introduced in https://github.com/OctopusDeploy/Issues/issues/10177|github.com/OctopusDeploy/Issues/issues/10177

Changes in Octopus Server 2026.4.4625

Breaking Changes
  • 10262 - Tag set scope of Feature Toggle has been renamed to Feature Flag
  • 10261 - Tentacle communication timeouts in Machine Policies are limited to 30 minutes
Other Changes
  • 10257 - Project templates in Platform Hub now support channels and lifecycles. Existing Project templates will need to be updated to include channels & lifecycles, project provided configurations are no longer supported
  • 10234 - Fixed an issue where scrolling the navigation panel on smaller screen sizes wouldn't show all navigation items

Changes in Octopus Server 2026.4.3546

  • 10256 - System URL's no longer contain a space Id. Existing links will continue to work and redirect to the correct page

Changes in Octopus Server 2026.4.3390

  • 10255 - Upgrade Octopus Server's Microsoft.Data.SqlClient dependency to 7.10
  • 10252 - Fixed issue preventing variable binding on the Commit to Git step's input source repository URL

Changes in Octopus Server 2026.4.3244

  • 10259 - Enhancement: See the remote timestamp of task log output
  • 10246 - Update Entity Framework dependency to 10.0.12
  • 10249 - Octopus Server more efficiently handles secretes when running many concurrent deployments, preventing Out Of Memory Exceptions
  • 10245 - Update Microsoft.Data.SqlClient dependency to 7.0.3
  • 10228 - Introduce platform hub external feeds
  • 10242 - Fixed issue in Calamari on Windows where a crashed or closed process might result in locks not being released

Changes in Octopus Server 2026.4.2818

  • 10248 - Deployments will no longer be blocked by a hung Clean Package package phase of a deployment

Changes in Octopus Server 2026.4.2760

  • 10230 - Deployments and runbook runs stuck in the Cancelling state can now be abandoned

Changes in Octopus Server 2026.4.2675

  • 10237 - Script steps can now reference a Git repository without cloning it

Changes in Octopus Server 2026.4.2581

  • 10240 - Updated the Audit and Subscription configuration pages to be current space agnostic

Changes in Octopus Server 2026.4.2395

  • 10232 - Octopus can now post deployment and event notifications to Microsoft Teams channels, either through a per-channel webhook URL or the Octopus Teams app
  • 10231 - Fix excessive JIT compilation sometimes resulting in a crash

Changes in Octopus Server 2026.4.1761

  • 10227 - Improve handling of ExtensionSettings on Project and Environment

Changes in Octopus Server 2026.4.1480

  • 10222 - Add API support for configuring steps in process and project templates to select multiple environment or tenant tag scopes
  • 10225 - Fix an issue with process and project templates using newer versions than intended in some cases
  • 10224 - Moved LLMs.txt to the server root at /llms.txt
  • 10218 - Fix: Using variables as container names in Update Amazon ECS Service step fails validation
  • 10216 - Fixed the total number of versions reported when listing package versions from container registry and Artifactory feeds. The total previously reflected the size of the page returned rather than the number of matching versions, so paging through the API could stop before all versions were seen
  • 10221 - Enabled Wait for Argo CD Applications step for self hosted release
  • 10232 - Octopus can now post deployment and event notifications to Microsoft Teams channels, either through a per-channel webhook URL or the Octopus Teams app
  • 10220 - Disable the ability to execute 'Deploy a VHD' steps. If you required VHD deployments, please contact support@octopus.com
  • 10215 - Adds bulk paste selection facility to tenant multi-select for Deployments and Runbook runs

Changes in Octopus Server 2026.4.243

  • 10212 - Fixed a bug where the visibility of the Edit State button on a Task might be incorrect
  • 10206 - Add support for sourcing from GitHub Connections in Process and Project Templates