Hallo, i tried to update the standard distribution of Indy with the github version (ssl-oauth + PR), like for 12.0 version and all is working, also for LivePreview for FMX. The only exception is the package "Embarcadero RAD Server Edge Components" that which causes an AV closing the RAD STUDIO. By disabling this package (which I don't use) the problem does not arise.   I recompile a bunch of working project with Indy and all is OK