: Avoid long wait times associated with the online installer fetching thousands of small files.
If the official server is slow, trusted mirrors include: download qt 5.15.2 offline installer
Official offline installers for are strictly reserved for commercial license holders . For open-source users, the Qt Group discontinued official binary offline installers starting with version 5.15. How to Access Qt 5.15.2 : Avoid long wait times associated with the
However, you still have several ways to get this specific version depending on your needs. 1. The "Archive" Trick (Official Online Installer) download qt 5.15.2 offline installer
Download the Qt Online Installer from the official site. During installation, select the Archive checkbox. Click Filter to see historical versions. Select Qt 5.15.2 from the list.