Hello,
I'm facing an issue while trying to open xlsx file.
File is local copy so possibility of it being open elsewhere doesn't apply here and when I'm trying to open I get following result.

The only suspicion I have is that file returning this issue is formatted as "containing strictly confidential data" but I'm not sure if that might be direct reason because other files work fine.
Does anyone have some idea what is possible reason and how possibly to avoid it?
Thank you in advance.