Note: Microsoft has recently reorganized the Insider program. The Fast ring is now known as the Dev Channel. The Slow ring is now known as the Beta Channel and Release Preview ring is now known as the Release Preview Channel.

Windows 10 Preview Build 20155

Here is the list of fixes contained in today’s new build:

We fixed an issue that could result in Notepad unexpectedly being removed after resetting your PC. If you were impacted by this, you can reinstall Notepad via Optional Features in Settings.We fixed an issue where the “Windows needs space to continue” dialog might have told you to select Continue but no Continue button was displayed.We fixed an issue that could result in the Windows Update icon unexpectedly not appearing in the notification area of the taskbar when an update was ready for reboot.We fixed an issue that could result in an IME typing as if it was ON, when it was actually in OFF state, and tapping the IME mode indicator in the taskbar wouldn’t change the mode.

Remember that Insider builds are meant for coders, IT admins, and Windows 10 enthusiasts who want to test new features and submit feedback to Microsoft. These builds are not meant for inexperienced users. They are also not meant to run on your primary production machine. Insider builds contain many known stability issues that can cause your system to become unstable or even crash. For more on this build’s full list of changes, known issues, and workarounds make sure to read Microsoft’s full blog post.