How do I fix invalid header CSV?

Why is my CSV file invalid?

Verify that the CSV file is formatted the same way as our sample CSV file. Make sure the "Username" column has a header defined. Make sure the username field is not blank for any users. Make sure the delimiter used in your file is a comma.

What is invalid file header?

A streamed file could not be decoded because the header of the file was corrupted or it is an unsupported file type. The sound that triggered this error is reported with the error. Probable causes: File corruption.

How do I fix a CSV file error in Excel?

Resolution1Open the CSV in Notepad. (Don't use Excel to open the CSV file because the quotation marks may not be visible in Excel).2On the Edit menu, select Replace. In the Find what box, type ", leave the Replace with box blank, and then select Replace All. ... 3Save the file, and then import it to Office 365.

How do I put a heading in a CSV file?

How to Make a Header Row in a CSV File1Right-click on the icon for the CSV file, and move your mouse up to "Open With." ... 2Select Wordpad or Notepad from the list. ... 3Click anywhere in the text that opens up, and press "Ctrl+Home" to move the cursor to the first space in the text box.