If you have an active or expired license that included v15.2, you can find the installer (e.g., DevExpressComponents-15.2.x.exe ) by logging into the DevExpress Download Manager .
Modern subscriptions (like Universal or DXperience) grant "downgrade rights," allowing you to download any previous version, including 15.2, for free from your account portal. devexpress 15.2 download
Before installing, ensure your development environment matches these specifications: New in v15.2 | DevExpress If you have an active or expired license that included v15