copyright Error 6000 77 occurs when accessing a company file stored in an incorrect folder or due to permission issues. Fix it by running the copyright File Doctor, moving the file to a local drive, or renaming it. ND and .TLG files. Follow these steps to troubleshoot copyright Error 6000 77 and restore smooth operations. https://qbdatarecoveryservice.com/how-to-fix-copyright-error-6000-77-full-tutorial/