Cannot open a PDF file in Acrobat that was created in InDesign. Adobe. com. How to get a file back from a email attachment decoding error Adobe Reader. Visit Adobe Document. Cannot Open Damaged File Acrobat ReaderThis is from the article noted below. Acrobat products have historically opened a PDF as long as the PDF header started anywhere within the first 1. No checks were performed on the extraneous bytes before the PDF header. However, the 1. 0. PDF header. The product now refuses to open the small fraction of PDFs that do not correctly start with the PDF header and an error appears Error the document is damaged and cannot be repaired. Adobe Reader could not open the file because either it. I cannot open an email attachment. Adobeboth reader and acrobat doesnt open them. Cannot Open Damaged File. Visit Adobe Document Cloud on Facebook Visit Adobe Document Cloud. Adobe Reader could not open because it is either not a supported file type or because the file has been damaged for example, it was sent as an email attachment and wasnt correctly decoded. There are a few workarounds mentioned in the article. Adobe Email Attachment Wasn T Correctly Decoded' title='Adobe Email Attachment Wasn T Correctly Decoded' />I am trying to open my security centre, adobe reader opens up and states it is not a supported file or it was damaged as an email attachment that wasnt correctly. Error Message Adobe Reader. Helping Verbs List With Examples Pdf.