<div dir="ltr"><div>I'm having a problem when trying to install a former version of QGIS (I need Python 3.7 as I'm working on a Win7 PC) where QGIS won't load correctly after installation. It's complaining that `icuuc56.dll` is missing or that qgis-bin.exe is not a valid Win32 application although I'm positive I am using a 64 bits PC.</div><div><br></div><div>I have posted a question here: <a href="https://gis.stackexchange.com/questions/429574/osgeo4w-install-from-local-directory-seems-to-expect-win32-applications" target="_blank">https://gis.stackexchange.com/questions/429574/osgeo4w-install-from-local-directory-seems-to-expect-win32-applications</a></div><div><br></div><div>As explained in the question, I have manually downloaded all required files (listed in <a href="https://download.osgeo.org/osgeo4w/v1/x86_64/setup.ini" target="_blank">https://download.osgeo.org/osgeo4w/v1/x86_64/setup.ini</a>) from <a href="https://download.osgeo.org/osgeo4w/v1/x86_64/release/" target="_blank">https://download.osgeo.org/osgeo4w/v1/x86_64/release/</a></div><div><br></div><div>Any help would be greatly appreciated.<br>Thanks,</div><div>Yannick</div><div><br></div><div>Here is the full list of the files I downloaded and tried the installation from:</div><div><pre style="box-sizing:unset;border:none;margin-top:0px;margin-bottom:0px;padding:0px;overflow:auto;word-break:break-all;white-space:pre-wrap"><span style="background-color:rgb(255,255,255)">C:\x86_64\release\_obsolete\python3-psycopg2\python3-psycopg2-2.8.4-1.tar.bz2
C:\x86_64\release\exiv2\exiv2-0.26-1.tar.bz2
C:\x86_64\release\expat\expat-2.1.0-1.tar.bz2
C:\x86_64\release\gdal\gdal-3.1.4-3.tar.bz2
C:\x86_64\release\gdal\python3-gdal\python3-gdal-3.1.4-3.tar.bz2
C:\x86_64\release\geos\geos-3.8.1-1.tar.bz2
C:\x86_64\release\gpsbabel\gpsbabel-1.4.4-2.tar.bz2
C:\x86_64\release\gsl\gsl-libs\gsl-libs-1.15-1.tar.bz2
C:\x86_64\release\hdf5\hdf5-1.10.5-5.tar.bz2
C:\x86_64\release\iconv\iconv-1.14-1.tar.bz2
C:\x86_64\release\libpq\libpq-11.5-1.tar.bz2
C:\x86_64\release\libspatialindex\libspatialindex-1.9.0-1.tar.bz2
C:\x86_64\release\libzip\libzip-libs\libzip-libs-1.2.0-2.tar.bz2
C:\x86_64\release\msvcrt\msvcrt-1.0.3-1.tar.bz2
C:\x86_64\release\msvcrt\msvcrt2015\msvcrt2015-2.0-2.tar.bz2
C:\x86_64\release\opencl\opencl-2.0.10-5.tar.bz2
C:\x86_64\release\openssl\openssl-1.1.1d-2.tar.bz2
C:\x86_64\release\proj\proj-6.3.2-1.tar.bz2
C:\x86_64\release\protobuf\protobuf-3.11.4-2.tar.bz2
C:\x86_64\release\python3\pyqt5\pyqt5-5.11.3-2.tar.bz2
C:\x86_64\release\python3\python3-certifi\python3-certifi-2020.4.5.2-1.tar.bz2
C:\x86_64\release\python3\python3-chardet\python3-chardet-3.0.4-2.tar.bz2
C:\x86_64\release\python3\python3-core\python3-core-3.7.0-4.tar.bz2
C:\x86_64\release\python3\python3-coverage\python3-coverage-4.5.1-1.tar.bz2
C:\x86_64\release\python3\python3-future\python3-future-0.16.0-2.tar.bz2
C:\x86_64\release\python3\python3-httplib2\python3-httplib2-0.11.3-1.tar.bz2
C:\x86_64\release\python3\python3-idna\python3-idna-2.9-1.tar.bz2
C:\x86_64\release\python3\python3-jinja2\python3-jinja2-2.11.1-1.tar.bz2
C:\x86_64\release\python3\python3-markupsafe\python3-markupsafe-1.1.1-1.tar.bz2
C:\x86_64\release\python3\python3-mock\python3-mock-2.0.0-2.tar.bz2
C:\x86_64\release\python3\python3-nose2\python3-nose2-0.8.0-1.tar.bz2
C:\x86_64\release\python3\python3-numpy\python3-numpy-1.19.1-1.tar.bz2
C:\x86_64\release\python3\python3-owslib\python3-owslib-0.20.0-1.tar.bz2
C:\x86_64\release\python3\python3-pbr\python3-pbr-4.3.0-1.tar.bz2
C:\x86_64\release\python3\python3-plotly\python3-plotly-4.8.2-1.tar.bz2
C:\x86_64\release\python3\python3-psycopg2-binary\python3-psycopg2-binary-2.8.4-1.tar.bz2
C:\x86_64\release\python3\python3-pygments\python3-pygments-2.5.2-1.tar.bz2
C:\x86_64\release\python3\python3-pyproj\python3-pyproj-2.6.1.post1-1.tar.bz2
C:\x86_64\release\python3\python3-python-dateutil\python3-python-dateutil-2.8.1-1.tar.bz2
C:\x86_64\release\python3\python3-pytz\python3-pytz-2020.1-1.tar.bz2
C:\x86_64\release\python3\python3-pyyaml\python3-pyyaml-5.3.1-1.tar.bz2
C:\x86_64\release\python3\python3-qscintilla\python3-qscintilla-2.10.8-1.tar.bz2
C:\x86_64\release\python3\python3-requests\python3-requests-2.23.0-1.tar.bz2
C:\x86_64\release\python3\python3-retrying\python3-retrying-1.3.3-1.tar.bz2
C:\x86_64\release\python3\python3-six\python3-six-1.15.0-1.tar.bz2
C:\x86_64\release\python3\python3-urllib3\python3-urllib3-1.25.9-1.tar.bz2
C:\x86_64\release\python3\sip-qt5\sip-qt5-4.19.14-1.tar.bz2
C:\x86_64\release\qgis\qgis-common\qgis-common-3.18.3-1.tar.bz2
C:\x86_64\release\qt5\qca-qt5\qca-qt5-libs\qca-qt5-libs-2.1.3-1.tar.bz2
C:\x86_64\release\qt5\qscintilla-qt5\qscintilla-qt5-2.10.8-1.tar.bz2
C:\x86_64\release\qt5\qt5-libs\qt5-libs-5.11.2-1.tar.bz2
C:\x86_64\release\qt5\qt5-qml\qt5-qml-5.11.2-1.tar.bz2
C:\x86_64\release\qt5\qt5-tools\qt5-tools-5.11.2-1.tar.bz2
C:\x86_64\release\qt5\qtkeychain-qt5\qtkeychain-qt5-libs\qtkeychain-qt5-libs-0.9-1.tar.bz2
C:\x86_64\release\qt5\qtwebengine-qt5\qtwebengine-qt5-libs\qtwebengine-qt5-libs-5.10.1-1.tar.bz2
C:\x86_64\release\qt5\qtwebkit-qt5\qtwebkit-qt5-libs\qtwebkit-qt5-libs-5.212-1.tar.bz2
C:\x86_64\release\qt5\qwt\qwt-libs-qt5\qwt-libs-qt5-6.1.3-5.tar.bz2
C:\x86_64\release\shell\shell-1.0.2-4.tar.bz2
C:\x86_64\release\spatialite\spatialite-4.3.0a-6.tar.bz2
C:\x86_64\release\sqlite3\sqlite3-3.29.0-1.tar.bz2
C:\x86_64\release\zlib\zlib-1.2.8-1.tar.bz2<br></span></pre></div></div>