Try using the WholeClear vCard Duplicate Remover Software, to remove duplicates from a vCard file. This application can complete the process without creating more duplicates and while maintain the data integrity of the files. You can implement this software on all Windows systems with ease and remove duplicates in bulk with it. The vCard file from multiple applications is simply accepted by this tool without any compatibility issues. Also, you can try its free trial to have a deeper understanding of its functionalities.