Lists possible errors which occur while attempting to load a password protected encrypted workbook.
Indicates that an .xls binary file is encrypted and you should set the XlsDocumentImporterOptions.Password property to a password string.
The password specified by the XlsDocumentImporterOptions.Password property is incorrect.
Indicates that the encryption type is not supported. Only the RC4 algorithm for binary .xls files is implemented. Other encryption algorithms which create XOR obfuscated and RC4 CryptoAPI encrypted .xls binary files are not supported, so they throw this error.
Indicates that the document being loaded did not pass the HMAC verification.
The SpreadsheetDecryptionError enumeration is used to specify the error type for the SpreadsheetDecryptionException.Error property.