How to fix `The file name is invalid: File names cannot contain .., ./, or .\.`

This error occurs when the name of the Excel file or compressed file (e.g., zip) you're uploading contains invalid characters like "..", "./", or ".".

To resolve this issue:

  • Check Your File Name: Look at the name of the file you're trying to upload. Make sure it does not contain any of the following characters:
    • Two consecutive dots (..)
    • The string ./
    • The string .\\
  • Rename the File: If your file name contains any of these invalid characters, rename the file on your computer:
    • Right-click the file and select "Rename."
    • Remove or replace any of the invalid characters listed above.
    • Ensure the new file name is simple and contains only letters, numbers, hyphens (-), or underscores (_).
  • Upload the File Again: After renaming the file, try uploading it again.