The return value of -5 means that signature verification for a repository has failed. There is currently a bug in tlmgr that prevents a sensible error message from being printed, but this is being worked on and should be fixed soon:
The most recent incarnation of this problem stems from the ...
Thank you for your useful comments! Indeed, the problem was due to an old dirty hack I forgot I made on environment variables. From older TeX installations, I did not use TEXMFHOME and used a custom TEXINPUTS that was not set properly and had :/usr/share/texlive/texmf-dist//: as a substring.
I unset TEXINPUTS, moved my TeX stuff to $MYDEVPATH/texmf and set ...
The TeX Live distribution already contains compressed archives (.tar.xz) and these are used for installation. The reason why it is slow is that there are a lot packages, and for each there are between 1 and 4 archives to be downloaded, decompressed (xz), and unpackaged (tar).
Furthermore, there is no multi-threaded installation, so the packages are done one-...
I solve this by updating all. I find there is not a lot info on how to update TeX Live on a Windows machine. So I'd like to give more details here.
Find the tl-tray-menu.exe. If you don't custom-install TeXLive, it's usually located in C:\Program Files (x86)\texlive\2019
Right click the icon on the right corner, choose Package Manager
Open Repositories, ...
You can search for the Debian/Ubuntu package that contains a given file with apt-file. For example,
apt-file find "t1qpl.fd"
If you’re not sure about the exact filename, you can do a full-text keyword search with apt search, or a ...