Minecraft for Windows 10 was updated to 1.14.60, and no longer is able to log in to the current Bedrock Server at 1.14.32. 

Contacted Microsoft Support and they are unable to help, and forwarded me to Mojang for help. Needless to day there is no easy way for end users to block the Windows Store update or downgrade to previous version. As a result nobody can log into the server any longer as of today.