If Microsoft Project cannot open a file, you can repair corrupted Microsoft Project files by following the solutions mentioned in this post.

How to Open an XLS File in Excel. XLS files are Excel workbook files created in Excel 97 or Excel 2003. The 2007, 2010 and 2013 versions of the program use the XLSX format by default to save ...

Open up MS Project. Go to File > Options > Trust Center > click on Trust Center Settings > Tick the option "Allow loading files with legacy or non-default file formats" and re-try opening the ...

How to open a .csv file in Excel Opening a .csv file is as easy as opening a .txt file, and usually, you won’t have to clean up the data before doing so because the save task inserts the delimiter.