Matthew 28 versus John 20.

[sojourner]

Matthew 28:1-10 says that when Mary Magdalene went to the tomb that she was told by an angel that the Messiah had risen and would be seen in Galilee. Matthew then says that she ran "with great joy" to tell the disciples and while on the way that she met the Messiah (this occurred before she got to the disciples).

However, John 20:1 and 2 say that when she came to the tomb and didn’t find the Messiah there, that she ran to the disciples and told them that He had been taken away and that she didn’t know where He was. In Matthew she knew where He was (or at least had been) and where He would be, but in John she didn’t.
How can this be reconciled?

It can't they are two different stories by two different authors, rendering two different theological treatments of the resurrection. They're not meant to "reconcile," because they're not reporting history, they're reciting myth.