20.04 (well, modern glibc) is not compatible with WSL 1 due to missing bridges for a realtime-clock system call! Microsoft is working on a patch, but until the

20.04 (well, modern glibc) is not compatible with WSL 1 due to missing bridges for a realtime-clock system call! Microsoft is working on a patch, but until then, you need WSL 2 or stay on the previous release.