After updating Dynamics CRM 2016 to version 8.2.3.8 I can not import any file. I get error:
Unhandled Exception: System.FormatException: Nieprawidłowy format ciągu wejściowego.
w System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
w System.Number.ParseDecimal(String value, NumberStyles options, NumberFormatInfo numfmt)
w Microsoft.Crm.Spreadsheet.ExcelRow.ValidateChecksum()
w Microsoft.Crm.Asynchronous.ImportOperationParse.ProcessRowsForExcel(String importExcel, Entity importFile, Int64& rowNumber, Int64 originalDataRowNumber, Guid organizationId)
w Microsoft.Crm.Asynchronous.ImportOperationParse.PopulateParseTableForExcel(Guid organizationId, Entity importFile)
w Microsoft.Crm.Asynchronous.ImportOperationParse.ExecuteImportOperation(Guid organizationId, Guid importId, Int32 operationType)
w Microsoft.Crm.Asynchronous.ImportOperation.InternalExecute(AsyncEvent asyncEvent)
Sample file I want to import: http://ecz.com.pl/microsoftCRM/Import.xlsx