By Dona Sarkar and Brandon LeBlancHello Windows Insiders, today we are releasing Windows 10 Insider Preview Build 18290 (19H1) to Windows Insiders in the Fast ring.
REMINDER: As is normal with builds early in the development cycle, builds may contain bugs that might be painful for some. If this makes you uncomfortable, you may want to consider switching to the Slow ring. Slow ring builds will continue to be higher quality.
If you are. looking for a complete look at what build is in which Insider ring – head on over to Flight Hub. You can also check out the rest of our documentation here including a complete list of new features and updates that have gone out as part of Insider flights for the current development cycle (which currently is 19H1).
Builds expiring soon – update now!As pre-release software, Insider Preview builds have a built-in expiration date that we call a “timebomb”. This has been included ever since the first Windows 10 Insider Preview build and helps ensure Insiders stay up to date with the latest features and quality updates. Once a build expires, Insiders will be provided a warning that the build has expired and will get that warning once a day. In addition to that, Insiders will also see User Access Control (UAC) warnings as well. Insiders in both the Fast and Slow rings need to make sure they are running the latest builds offered to those rings. Insiders in the Fast ring need to make sure they take the update to 19H1 Build 18290 (today’s flight) in order to avoid hitting the timebomb set to Dec. 14th . Additionally, Insiders who used ISO for Build 18272 also need to take the Build 18290 flight to avoid hitting the timebomb. We will be removing these ISOs from the download page shortly. Insiders in the Slow ring running older builds need to update to Build 17763 (the final build for the October 2018 Update) to avoid hitting the timebomb in older RS5 builds. Insiders can check their flight settings and verify they have the latest builds by going to Settings > Update & Security > Windows Insider Program.