I share your doubt that copying a file in some temp directory will help with a denied access. Only copy files when you have a real reason.

You can find suggestions in the manual for installation or file access issues. If you can't fix it yourself, you can hire our installation service for installing the MT4 bridge. But normally this should not be necessary. If you have a locked file, just restart the PC and delete it.

Locked files can have several reasons. Any Windows user can occasionally encounter this problem. That's why the manual mentions it. It is unrelated to Zorro or MT4.