We have identified a problem when upgrading a Windows 10 system with ESET Endpoint Encryption installed to the 1903 feature update. Installing the update can cause the system to crash (blue screen) when booting.
We are currently investigating the cause and recommend not upgrading an encrypted system to 1903 until further notice.
Systems that have been affected will need to be decrypted using our recovery tool (if full disk encryption was enabled) and then repaired using the Windows recovery console. See this knowledgebase article for more details: https://support.eset.com/kb7309/