According to this post:
I use the provided source code:
Using MyStorage As Email.Storage.Pst.PersonalStorage = Email.Storage.Pst.PersonalStorage.FromFile(“D:\source.ost”)
To convert OST to PST and I get NotImplementedException with error message:
The method or operation is not implemented.
Plus, although error is shown, the target PST file is created but exactly identical to the source OST file!
Used FC.exe and all the same!