Echo sounding, echolocation - pinpointing The placement of some thing by measuring the time it will require for an echo to return from it Test the Add-Ins set up as part of your Microsoft 365 apps. These insert-ins may cause difficulties for example app crashes or considerable overall performance degradation. https://worldlistpro.com/story21970834/how-to-fix-microsoft-365-issues-on-windows-10-11