ContributionsMost RecentMost LikesSolutionsRe: SoapUI 5.6.0 on Mac OS Big Sur doesn't work, hangs on I have found the solution. Mac OS Big Sur prefers tabs instead of new window. So the solution is below, in "prefer tabs" section, choose "never". SoapUI 5.6.0 on Mac OS Big Sur doesn't work, hangs on I have upgraded my Mac OS to Big Sur today. I have tried to open my SoapUI 5.6.0, although it works before, however it doesn't work, it hangs on. Endpoint Explorer windows is opening and nothing gives any feedback then.