I have structured this into depending on your use case: 1) Official Documentation, 2) FAQ/Knowledge Base, or 3) Internal DevOps notes.
Check the tab. If 5.15.2 isn't listed, click "Add" and browse to the qmake.exe file inside your installation's bin folder.
At the component selection screen, check the Archive box on the right-hand side and click Filter .
However, if you are an open-source user, you can still access Qt 5.15.2 by following these alternative methods: 1. Using the Online Installer "Archive" Feature
Official offline installers for version 5.15 and later are generally not provided for free. You may find older versions (like 5.12) on the Qt Archive, but for 5.15.2, you typically must use the Online Installer and select the specific version during the "Select Components" step. 2. Installation Steps
: get all 5.15.x patch releases via maintenance tool.