I've searched around but none of the "fixes" I've found have worked (running installer .bat manually, alternate mirrors, etc). Any help or other resources would be greatly appreciated. Every time I run the installer I get the normal fluff log output with this at the end before it crashes:
Loading http://mirrors.concertpass.com/tex-archive/systems/texlive/tlnet/tlpkg/texlive.tlpdb xz: (stdin): Compressed data is corrupt Installing TeX Live 2018 from: http://mirrors.concertpass.com/tex-archive/systems/texlive/tlnet (verified) Platform: win32 => 'Windows' Distribution: net (downloading) Using URL: http://mirrors.concertpass.com/tex-archive/systems/texlive/tlnet Directory for temporary files: C:\Users\fewr\AppData\Local\Temp\NzH1K9lEZQ Installing to: C:/texlive/2018 Installing [0001/3638, time/total: ??:??/??:??]: 12many [376k] tar: Skipping to next file header untar: untarring C:\Users\fewr\AppData\Local\Temp\NzH1K9lEZQ\IZqygHcgBk/12many.tar failed (in C:/texlive/2018/texmf-dist) TLPDB::_install_package: untar failed Installation failed.
EDIT: I tried using basic, advanced, custom, exe, zip download, and everything in between. I tried multiple mirrors and even making a portable install. Everything crashes with this exact error message.