I have an Excel file that I'd need to read to a collection. It's being opened from the target application as a regular Excel file. The issue with it is that it doesn't seem to get attached properly - or then there is an issue with instances. As I'm trying to read it into collection, it succeeds normally when I do it step by step. If I try to do it in any faster modes, it fails to get anything. I tried to save it to fileshare and read it there; but it only saves an empty Excel sheet. I've tried to copy range to another Excel, which fails. Re-attaching doesn't make any difference. Neither does extra wait-times. Anyone faced that - and how to resolve it?