Hey,

I am Aaditya Purani (@aaditya_purani), so many of my friends experienced issues that they get error while installing qtox when they use command. It is a case study + solution .

sudo apt-get install apt-transport-https

and you will get

E: Unable to locate package apt-transport-https

The first traditional way is to look in /etc/apt/sources.list

leafpad /etc/apt/sources.list

After going that, i found out the links for apt were in “http” rather than https . So it wasn’t properly Installed (Clue 1)

So, i went trying on

sudo apt-get install apt-transport-https

apt-get update

The Error was

E: The method driver /usr/lib/apt/methods/https could not be found

So, I thought maybe apt was pointing me to an obsolete package. I found that the version  did not exist and hence apt failed to fetch the package. 🙂 (Clue 2)

So, i went to Mirrors for kali linux and downloaded a Kali Linux apt-transport-https (The latest one 1.0.9.10)

http://http.kali.org/pool/main/a/apt/

Find appropriate deb package from the list, If you are on 64-bit Machine, download amd64 file. If you are on 32 Bit Machine, download i386 file. If you are running on Mobile device, download armhf file.

And then the commands are

cd Downloads/

dpkg -i apt-transport-https_*.deb

Obviously, it had to be work

If in case the source file is fine but apt fails to fetch a package, manually tracking the package might provide a solution. This is a kind of case study, many of you won’t get this particular error, but manually tracking of error is the best way.

Thanks a lot for reading. Comments are welcomed