Manual Method to Migrate NSF to PST format
First of all, you have to use manual method to migrate Lotus Notes NSF file to Outlook PST format. For which, you have to export Lotus Notes data into CSV format and then import into MS Outlook using Import Export Tool. If it is not working for you then use third party solution to export NSF file in PST file format. However many tools are available on internet like MailsDaddy NSF to PST Converter, SysBud NSF to PST Converter, Datavare NSF covnerter etc. You can choose one of them which suits you better.