Since you can no longer "buy" a license, here is what you need to know about accessing or replacing this tool: Current Availability
Microsoft Expression Encoder 4 is a and is no longer available for purchase from Microsoft or official retailers. Mainstream support for the software ended in 2015, and all extended support concluded on July 14, 2020. buy microsoft expression encoder 4
Despite its age, some users still look for it for specific legacy tasks: Review: Microsoft Expression Encoder 4 - Streaming Media Since you can no longer "buy" a license,
The paid "Pro" version was required for H.264 encoding and live streaming . These features are generally unavailable in the free version unless you already own a legacy product key. Why People Used It 2020. Despite its age