| Overload | Description |
|---|---|
| IsWorkbookEncrypted(String) | Determines whether the workbook at the specified path is encrypted with an open password. |
| IsWorkbookEncrypted(Stream) | Determines whether the workbook in the specified stream is encrypted with an open password. |
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2