I have problem with polkit since install. I run it on VM and it was install by the service provider. I do not have out-of-band access to it. So I install xrdp via ssh. When I try to “Add or Remove” program in the xfce, it gets failed to authenticate error. It did not prompt me for password. I saw a few posts about polkit problem. I tried to install additional polkit but no effect. I decided to switch to KDE environment and I still get errors trying to authenticate in GUI.
Any idea where I should be looking? I only recently start to use Manjaro.