When I tried to install Minecraft on a Microsoft Windows system using the Windows Installer file I had downloaded, I saw the error message "These libraries failed to download. Try again. org.ow2.asm:asm-all:5.2."
I then clicked on the link for "Installer" rather than "Windows Installer on the website from which I had downloaded the installation file, which resulted in a .jar file being downloaded. I right-clicked on the .jar file, forge-1.12.2-188.8.131.5268-installer.jar, and chose "Open with" then "Java(TM) Platform SE binary". I was then able to install the Minecraft client. When the client was successfully installed, I saw the message "Successfully installed client profile forger for version forge 1.12.2-184.108.40.20668 into launcher and grabbed 1 required libraries."
Note: These are notes from an October 12, 2019 installation that I hadn't posted, but I am posting now in case I encounter a similar error again.