When the FILESTREAM database option NON_TRANSACTED_ACCESS is set to FULL and the READ_COMMITTED_SNAPSHOT or the ALLOW_SNAPSHOT_ISOLATION ...

When the FILESTREAM database option NON_TRANSACTED_ACCESS is set to FULL and the READ_COMMITTED_SNAPSHOT or the ALLOW_SNAPSHOT_ISOLATION options are on, T-SQL and transactional read access to FILESTREAM data in the context of a FILETABLE is blocked.