I had problems with 17 not being able to install guest editions in windows I tried to delete the dualboot partition and lost the loot so I reinstalled 16.3 all is ok works fine I did notice that while updating virtualbox is now 6.1.50 not 6.1.38 as original 17 used 6.1.48 was this a buggy edition does any one know also what edition of virtualbox does 17.1 have thanks Sandy