Q.Why Are Branches Turning Brown On My Peach Tree?
I bought a house last summer and inherited a peach tree. I have very limited knowledge of fruit trees or how to care for them. This spring, my tree had an absolute bumper crop of peaches and I was so excited! However, entire portions of branches are turning brown and the fruit is withering. Can you please give me some guidance on what to do?

Certified GKH Gardening Expert
IT looks like a Brown Rot, or similar fungus. They all have similar treatment. These articles will help:
https://www.gardeningknowhow.com/edible/fruits/peach/peach-brown-rot-control.htm
https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
https://www.gardeningknowhow.com/edible/fruits/peach/peach-tree-care.htm