I used to have QGIS installed on my computer (functioning) but I decided recently to upgrade. However, attempts to install QGIS have failed. My computer is running Windows Vista (upgrading my operating system is not an option in my case) with 32-bit operating system.
During installation (which I have tried with both QGIS 2.18 and QGIS 2.14 several times now), the following error shows up: "Could not find C:/Program Files/QGIS 2.18/postinstall.log" but I can find a postinstall.txt file when I look manually When I try to open QGIS, I get the following error message: "This application failed to start because api.ms.wind.crt.runtime-l1-1-0.dll was not found. Re-installing the application may fix this problem."
If there is a known problem with the latest QGIS and older operating systems, what is the last version of QGIS that is known to work correctly with Windows Vista? [edit: I have successfully installed QGIS 2.10.1 on Windows Vista]
Additional issue: QGIS 2.18.14 (latest release in December 2017) nor QGIS 2.14 (long-term repository release) nor OSGeo4W does not install on my Windows 7 64-bit computer. No error messages were given during the Stand-alone installation but the same error message when I attempt to open QGIS pops up: