To overcome formatting errors after PST contacts change to vCard, you first need to understand why these issues happen. During the conversion process, contact fields can not match properly with the vCard structure, and some columns may not be migrated properly.
For better results, utilize professional software that can completely convert PST contacts to vCard without any difficulties. To make things easier, you can use ToolsBaer PST to vCard Converter to convert PST Contacts to VCF while keeping contact fields properly arranged and ready for use. Also, it runs offline, so there is no risk of data corruption. It is compatible with all Outlook and Windows versions, so you can choose according to your needs. And it provides a free demo version for testing its features.