Please provide the following (and please check them off the list with [x]) before submitting this issue:

Expected behavior

PageIterator should run problem free on large dataset (large # of pages). I'm using the Microsoft corporate data from Graph.

Actual behavior

PageIterator causes Stackoverflow exception after running 45 mins.

Steps to reproduce the behavior

Perform an initial delta sync on all users in the Microsoft corporation (tenant), using the latest PageIterator from the Core library.

Reading into the source code it could be caused by a mutual recursion between InterpageIterateAsync() and IterateAsync() which throws stackoverflow exception when operate on a large number of pages. Changing the code to use a loop should resolve this issue.