macos10.15

Hi, I have a mid-2014 MacBook Pro running macOS 10.15. I downloaded Parallels Desktop 20 from the official website, but during installation, the installer icon shows a gray prohibited symbol, and I cannot install it. Is this because my macOS version is too old or because my Mac’s hardware is...

After a MacOS upgrade, I am getting PRL_ERR_VM_UNABLE_ALLOC_MEM whenever I try to open my Suspended VMs. (one is Windows 7, one is Ubuntu 18). I have tried to "Stop" these VMs - and get a message about losing data etc. - but it doesn't force the VMs to really shutdown. They just keep their...