pen tail button

The pen tail button is a hardware feature on certain stylus pens used with Windows devices. In Windows 11 Canary Build 28020.1803, Microsoft addressed pen-tail-button behavior as part of a broader set of stability and usability fixes. This build, released in April 2026, includes improvements to how the pen tail button interacts with the system, alongside enhancements to voice typing reliability, Developer Mode polish, and the sfc /scannow tool. For users of pen-enabled devices, these refinements aim to make the pen tail button more responsive and predictable, contributing to a smoother overall experience in the latest Windows 11 preview builds.