Hello JohnInBrooklyn,
Thank you for reaching out to Apple Support Communities.
It seems you were following these steps:
"Change where imported files are stored
You can change where your iTunes media files are stored.
Important: For best results, don’t change the location of the iTunes folder or the folders inside it.
- In the iTunes app on your PC, choose Edit > Preferences, then click Advanced.
- Click Change, then select a new location for your files.
From now on, new songs and other items you import will be stored in the new location. Songs you’ve already imported stay in their current location.
Tip: If you want to now move your current files to the new location. see Consolidate your files in the iTunes folder.
To go back to storing imported files in the iTunes folder, choose Edit > Preferences, click Advanced, then click Reset."
After reviewing this article: Change where iTunes files are stored on PC
We would recommend reinstalling iTunes using this article: Remove and reinstall iTunes and related software components for Windows 7 and later
If the issue persists, we would recommend contacting Apple directly.
You can do so by going to Get Support.
Cheers!