: If this is part of a set (as the "2" suggests), you will typically need all parts (e.g., part 1 and part 2) in the same folder to successfully extract the contents.
: This is a non-standard extension but strongly suggests a RAR archive . The "2" could indicate the second volume in a multi-part archive (similar to .r02 or .part2.rar). Technical Context for RAR Files 049_kvartira3 2rar
If you are trying to access or report on this file, keep the following technical details in mind: : If this is part of a set