Password-protected Excel file

Is LO capable of opening an XLSX file that has a password? I tried it with v4.0 and LO thought it was a CSV file. I just tried with v5.2.1.2 and LO at least recognizes that there's a password but won't accept it. I'm sure this isn't the only client that's going to do this to me, so want to check on an LO solution before working it at the client end.

Dave

hi.
i have a word documents that include password.
when i want to open one of it, it needs one hour and 45 minute to open.
libreoffice should can open it but in a very long time.
when i open it, it does not request password from me and run properly.