Overnight this aspnet_client folder has appeared on our server in the main share. It has two empty sub-directories (system_web/4_0_30319) I'm wondering if it's safe to delete?
Ignore the answers provided by "Microsoft" moderators. They nearly always get it wrong.
Instead, go to StackOverflow and check out some real possibilities. In short, these are mostly obsolete folders that can appear (or re-appear) for a number of reasons. But head to StackOverflow for more detail.
Best of Luck...