for Live OS installation, the following updates must be installed and ready before using BypassESU:
- KB4490628: Servicing stack update, March 2019
- KB4474419: SHA-2 code signing support update, September 2019
- Latest Extended Servicing Stack Update, KB4555449 (May 2020) or later
- KB4575903: ESU Licensing Preparation Package (only required to get updates via WU)
- Updated Windows Update Client, at least KB3138612
if you installed any Monthly Quality Rollup, or July 2016 update rollup KB3172605, both already have updated WUC
if you installed January 2020 Security Only update KB4534314, or the fix update KB4539602, both already have updated WUC