Changelog

Major enhancement

Stop supporting .NET Framework 2.0 for launching Jenkins server and agents as a Windows service. .NET Framework 4.0 or above is now required. announcement, upgrade guidelines, JENKINS-60005 , JENKINS-61862 , Windows support policy
Update Windows Service Wrapper (WinSW) from 2.3.0 executable for .NET Framework 2.0 to 2.9.0 for .NET Framework 4.0. Includes numerous improvements and bugfixes. Most notably, the service installer will now ask for permission elevation if the required. changes summary, full WinSW changelog, Windows Agent Installer 2.0 changelog

Enhancement

Reorder configuration and delete buttons in the left sidepanel. pull 4852
Add the ability to filter out environment variables for Shell and Windows batch build steps. JENKINS-62014
Revamp the tabs and tables with better spacing and a consistent color palette. JENKINS-63002
Remove page generation timestamp from the footer. JENKINS-61806
Add sorting to Old Data management tables. JENKINS-25259
Allow fingerprint storage engine to be selected from the configuration page. JENKINS-63022 , JEP-226
Show warnings for deprecated plugins in the update manager and administrative monitors. JENKINS-59136
Update Jenkins form styling in preparation for changing form layout. JENKINS-56109 , Configuration UI Accessibility: Tables to Divs migration
Show hints about the current time on the server’s zone when configuring your User Defined Time Zone. JENKINS-61806
Developer: Add new extension points to define build step environment filters (currently in beta). JENKINS-62014
Developer: Add theming support for alert-* classes. Dark Theme repository
Developer: Add alert-success banner. JENKINS-62747
Developer: Allow theming the text area handle. Dark Theme repository
Developer: Require FingerprintStorage descriptors so they can be configured from the configuration page. JENKINS-63022
Developer: Remove method BeanBuilder.loadBeans(String). pull 4838
Internal: Allow JUnit 5 tests in the Jenkins core unit tests. Jenkins Test Harness-based integration tests still require JUnit 4. pull 4699
Internal: Use built-in WinSW features for permission elevation and strong cryptography. pull 4823, Windows Agent Installer 2.0 changelog
Internal: Upgrade to Remoting 4.5. This switches agent.jar and remoting.jar to a code-signing certificate owned by the CDF. pull 4832, Remoting 4.4 changelog, Remoting 4.5 changelog
Internal: Remove inline resources from layouts. JENKINS-60866
Internal: Document the Jenkins core issue triage guidelines. documentation

Bug fix

Fix IllegalArgumentException: Method not found error caused by misbehaviour in Util.isOverridden() (regression in 2.241). JENKINS-62723
Avoid a stack trace when an older version of glibc was used by an agent. pull 4830
Remove the fallback Jenkins URL from the JNLP launch file so that WebSocket agents can be connected over Java Web Start. JENKINS-63014
Fix the default domain name in Windows service serviceaccount configurations. JENKINS-12660 , Windows Service Wrapper 2.7.0 changelog

Changelog for 2.248