copyright error code 6129,0 is usually seen on the screen when the verification of the database connection fails or QB tries to access the company files. As a consequence of this error, the copyright user might not be able to open the company file. In case there is a network issue in the network used by the software, then it is not able to find the system or the server that holds the ... https://quickenterprisesupport.com/copyright-error-6129/