Trouble encountered in opening a file
I had a hard time opening this one kind of a file which has been just sent to me yesterday. It was sent to me with the attachment's format of an Microsoft Excel.
As I opened it after done downloading an error shows on the screen stating an Error 25091 Set up failed to change the source. Then buttons of Cancel or Retry.
I was dazed since I don't know what to do next. My first thought is that the file must be a virus. I don't have any idea about this. Please help.