Reader is lacking on your computer, the only ideal solution to “can’t open PDF” In some cases, your PDF documents will not openīecause you have not installed an ideal PDF reader on your computer. This will make the document unrecognizable. pdf extension could have been stripped away. If your document was sent via the email, the. pdf extension to know that the document is a PDF and to determine the application to use in order to open it. The PDF file is not recognizable – Your computer uses the. Some of the PDF Reader application files are corrupt.
If you can’t open PDF via Adobe Reader, the file you are trying to open could be a non-Adobe document – while it could be a PDF, it could have been created using a different third-party application whose format is not supported by Adobe Reader. The Reasons Why you Can’t open PDF documents on your computer: