I’m new to Roon. I downloaded Windows 64 Bit using windows 10. When I imported my library from the hard drive, about half of the albums say “Unidentified Artist”. The album name starts with the Artist and then the name of the album.
More information will help us help you.
Pick a well known album that is incorrect, show is a screenshot of its metadata and what Roon makes of it.
That would be a good starting point.
If the Artist name is in the Album name field, there is your problem. The Artist name should be in the Artist field.