microsoft package - Skipping acquire of configured file 'main/binary-i386/Packages' - ubuntu-18.04

Question

I am trying to install azure kinect on Ubuntu 18.04 following the instructions here https://scazlab.github.io/azure_setup_guide.html. I ran these lines of code
curl -sSL https://packages.microsoft.com/keys/microsoft.asc | sudo apt-key add -
sudo apt-add-repository https://packages.microsoft.com/ubuntu/18.04/prod
sudo apt-get update
and got the error message below
(base) kong#kong-Standard:~$ sudo apt-get update
Hit:1 http://ppa.launchpad.net/lutris-team/lutris/ubuntu bionic InRelease
Hit:2 http://packages.humanoids.kit.edu/bionic/main bionic InRelease
Hit:3 http://deb.anydesk.com all InRelease
Hit:4 http://packages.humanoids.kit.edu/bionic/testing bionic InRelease
Hit:5 https://packages.microsoft.com/ubuntu/18.04/prod bionic InRelease
Hit:6 http://gb.archive.ubuntu.com/ubuntu bionic InRelease
Hit:7 http://dl.google.com/linux/chrome/deb stable InRelease
Get:8 http://gb.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Get:9 http://gb.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Get:10 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]
Hit:11 http://packages.ros.org/ros/ubuntu bionic InRelease
Fetched 252 kB in 1s (220 kB/s)
Reading package lists... Done
N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'https://packages.microsoft.com/ubuntu/18.04/prod bionic InRelease' doesn't support architecture 'i386'
I found the solution to similar problem at this thread Skipping acquire of configured file 'main/binary-i386/Packages'
but in my case, I am not able to find the file /etc/apt/sources.list.d/bionic.list

Answer 1

In the folder /etc/apt/, where you have the folder source.list.d, you should also have a file called source.list.
Check if your package is there, and modify the corresponding line as needed.
cd /etc/apt/
cat sources.list
You should have a line like
https://packages.microsoft.com/ubuntu/18.04/prod bionic main somewhere probably towards the end.
Modify the file, using nano for example :
sudo nano sources.list
and add the mention [arch=amd64]:
deb [arch=amd64] https://packages.microsoft.com/ubuntu/18.04/prod bionic main