@ramkumar-kr I tried to use the latest version of your add on (version 1.1.2) and I see that the containers of Machine A (OSX 10.15.3 / FF 71.0) are showing up in the synced containers side bar of machine B (Win 10 / FF 71.0 64 bit) but they are not showing up in the Multi-Account containers tab. So I am not sure how do I use the container functionality on machine B