The easiest way to open a file with the XLSX extension is to use a relatively recent version of Microsoft Excel. You will have no trouble opening files in the XLSX format if you use version 2007 or higher. Tip The latest version of the Excel spreadsheet program is included in Microsoft ...
In the header to this all, you do mention the words "because the file extension is invalid" I should have asked, (or you could have provided as well) -- what is that invalid file extension? Is Excel giving that as a reason for not opening? Could you make a ...
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I don't have any back up of these files, I tried Excel's Open and Repair option, I tried changing the file extension, I don't have any previous version of the file, I tried some file repair tools but they can't repair it.
The file format and extension of %FILENAME% don't match. The file could be corrupted or unsafe. Unless you trust its source, don't open it. Do you want to open it anyway? STATUS: FIXED The issue was fixed inupdate for Excel 2013 ...
public DataTable ReadExcel(string fileName, string fileExt) { string conn = string.Empty; DataTable dtexcel = new DataTable(); if (fileExt.CompareTo(".xls") == 0) { //for below excel 2007 conn = @"provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fileName + ";Extended Properties=...
Learn about creating Open in Office experiences for Excel and Word, including learning about what are open in Excel experiences.
When you open a file in Excel, you get a message that the file name extension doesn't match the actual file format. For example, the file has an .xlsx file name extension but it's really a text file and should have a .txt file name extension. ...
Hi all. All of a sudden, whenever I open any Excel file (Office 2013; Win 10), it displays the message, > Excel cannot open the file '~$PERSONAL.XLSB' because the file format or file extension is not valid. Verify that the file has not been corrupted and that the file extension ...
So Excel decided it should prompt the user. If the user says No to this open, IE will download the file and save it in the cache. When it does this, it adds the XLS extension to the cache file. IE then opens the local copy. Because the extension on t...