複製記憶體時偵測到可能有 I/O 競爭情形。依照預設值，I/O 套件並不具備執行緒安全。在多執行緒應用程式中，必須以執行緒安全的方式來存取資料流，例如，使用 TextReader 或 TextWriter 的 Synchronized 方法傳回安全執行緒的包裝函式。此一要求同樣也適用於 StreamWriter 和 StreamReader 之類的類別。

Probable I/O race condition detected while copying memory. The I/O package is not thread safe by default. In multithreaded applications, a stream must be accessed in a thread-safe way, such as a thread-safe wrapper returned by TextReader's or TextWriter's Synchronized methods. This also applies to classes like StreamWriter and StreamReader.