Window 10 users can face an 80004005 Unspecified Error while copying the file. Window 10 packs multiple new features and a great user interface, but can encounter issues as well. If you are facing 80004005 Unspecified Error, then you should know that this problem occurs from two separate situations. The first issue happens when you are moving the file, deleting, or extracting any file. The other one happens because of bug or some corrupted update and software.