Conversion failed with font arial

  • When a try upload a ppt file with font arial i don´t have sucess. 
    This return the message The document conversion failed with error: {result:"false",method:"startDocumentConversion",meetingID:"dimdim-v4.5____teste",docID:"kwkw5611",error:"7404"}.
    But if a change the arial font to arial narrow i have sucess.
    How I resolv it?
    Exist any place where i have to put the arial font? I have to import the arial font? How a do it?
    Thanks in advance.