One was in general Comp Sci., the other focused on Statistics and Data Science, which was a brand new (basically unknown) field at the time. Good thing was, I was able to transfer more than half my credits to this program, so I only had to do the few math/statistics focused ones (and a second thesis).
That is highly dependent on your University / program. I went to a German Uni where you can often show Professors your transcript of classes and they can acknowledge them for the program.
It helped that both Masters were at the same department and many courses / Professors overlapped.
Why did you do two M.Sc. ?
One was in general Comp Sci., the other focused on Statistics and Data Science, which was a brand new (basically unknown) field at the time. Good thing was, I was able to transfer more than half my credits to this program, so I only had to do the few math/statistics focused ones (and a second thesis).
Is it possible to use the credits that were already used for one degree again for a second degree? I thought this was prohibited?
That is highly dependent on your University / program. I went to a German Uni where you can often show Professors your transcript of classes and they can acknowledge them for the program.
It helped that both Masters were at the same department and many courses / Professors overlapped.