. Because this version is now an older release, it is found in the archives rather than on the main homepage, which currently features QGIS 3.44 LTR Quick Download Links Direct Archive Access:
QGIS relies heavily on Python. If you get a Python error on launch, it usually means a previous installation left messy registry files behind. Try uninstalling all previous versions and reinstalling 3.28 from scratch. qgis 328 link download
Depending on your needs, you can find the correct installer through the following official channels: qgis 328 link download
28 specifically to maintain with a certain plugin or tutorial ? Download - QGIS qgis 328 link download
: QGIS-OSGeo4W-3.28.x-Setup-x86_64.msi (Select the 3.28 version from the directory).