The filename '<File>' contains illegal characters. The file will be ignored.

This error has the following cause and solution:

• The filename you've specified contains one or more invalid characters.

  When adding files to VSS, they must meet the following requirements.

  • 255 characters or less in length.
    
    
  • The complete path cannot exceed 259 characters, including separators.
    
    
  • May not begin or end with a space.
    
    
  • May not begin with a $.
    
    
  • May contain 1 or more file extensions (e.g., MyFile.Ext1.Ext2.Ext3.Txt).
    
    
  • Legal characters from 32-255 characters in length, but not: ?”/\<>*|: