I lost my schedule after switching to Windows 10.
I lost my schedule after switching to Windows 10.
By agenda do you refer to the calendar? Probably not—the Windows 10 Calendar is a distinct application from the Windows 8 version. If you revert to Windows 8.1, your files might remain there, though it's uncertain. You might attempt a simple reinstall of Windows 8 inside a VM or VirtualBox and check if the Calendar loads your details when logging in via your Microsoft account—provided the Windows 8 setup was synced.