When following the instructions to "Inspect and Transform" --> "Organize Imports" found at https://netbeans.org/kb/docs/java/editor-inspect-transform.html#organize , several such errors may populate in the results:

[Error: this occurrence is in a read-only file and cannot be refactored.]Organize imports

This occurs because Microsoft Team Foundation Server version-control sets all files as read-only unless checked out.

However when selecting *only* the checked-out files (non-read-only), the above error happens again on a file that is not selected -- this error prevents any changes from being made.

Netbeans seems to be including all files in the results, whether selected or not. Selecting *none* of the checkboxes produces the same error.

Possible workarounds are to:
 - "Organize Imports" for each checked-out file individually
 - check out all files in TFS for the scope of this "Inspect and Transform"
 - in Windows Explorer, select all files in the package(s) for the scop of this refactoring, right-click, select "Properties" then deselect "Read-only"

...but these options are not so user-friendly.