Forum Discussion
ABOUT WINDOWS INSIDER BUILD
This is not correct. You device will continue to boot after the date. You do need to update to the latest build to receive the new expiry date. Build 20170 or higher in the Dev Channel. If you moved from Dev to Beta Channel, you will need to reinstall Windows.
-Eddie
Hello SUHAS1523
This message means the build you're currently on is quite old and will no longer work as usual, after date specified. You should download the latest build (atm i.e. build 20170 on Dev channel) from Settings > Update & Security > Windows Update.
Or you can download the ISO file for previous build (atm i.e. build 20150 on Dev channel) from here:
https://www.microsoft.com/en-us/software-download/windowsinsiderpreviewadvanced
Then you can perform in-place upgrade with ISO file.
Hope this helps!