If you have lost your key, Microsoft Community suggests reaching out directly to ArcSoft support, as Microsoft does not host these third-party keys.
Licensing and Installation Procedures for ArcSoft MediaImpression 2 Version: 2.0 Last Updated: October 2023 arcsoft mediaimpression 2 license key install
During or immediately after installation, a prompt will appear asking for a Username and License Key . Activation Mode: If you have lost your key, Microsoft Community
As MediaImpression 2 relies on older code libraries: If you have lost your key