If you are also dealing with the problem related to duplicate contacts then use the Sysinfo Vcard Duplicate Remover. It supports all versions of VCF Files. The Tool helps its users to remove duplicates from multiple vCard files or folders. The tool has a 100% success rate. and the tool is compatible with Windows OS such as 11/ 10/ 8.1/ 8/ 7/ 2008 etc. Users can easily delete bulk duplicate contacts from all versions of the VCF file. Its other features are: 

• Apply Duplicate Filter based on First Name, Last Name, Email Address, and Phone No.
• Interactive and User-Friendly GUI.
• Maintains Data encryption and Data Integrity
• Compatible with Windows 11/10 and older versions.