I recall, back in the mid-to-late 2000s, investigating OutOfMemoryError on a Windows server, to find that the cause was an inability to create a thread, because

I recall, back in the mid-to-late 2000s, investigating OutOfMemoryError on a Windows server, to find that the cause was an inability to create a thread, because the kernel buffer space for managing threads was exhausted ( many thousands of threads created ) https://dzone.com/articles/outofmemoryerror-unable-create https://dzone.com/articles/outofmemoryerror-unable-create