i am getting the following error message when i open the pdffile

"Adobe Reader could not open 'xxxx.pdf' because it is either not a supported file type or because the file has been damaged (for example, it was sent as email Attachement and was not correctly decoded) "
Remove the PDF file that was CORRUPTED by sending it to the recycle bin then empty the recycle bin. Download the PDF file again from the original SOURCE. While the Acrobat is downloading the file, limit your computer usage, this will only take a few minutes so just walk away from the computer momentarily. Open the new PDF file once the download has completed.

Remove your Adobe Acrobat Reader program. Click "Start" and select "CONTROL panel." When the control panel opens find "Adobe Acrobat Reader" click on the program then select "Uninstall." Allow the program to complete the entire uninstall process.

Reboot your computer by clicking the "Start" then select "Restart." When the computer is finished rebooting reinstall the "Adobe Acrobat Reader" from Adobe official site. Download the latest version of the "Acrobat" for your computer's operating system. This will take a few minutes to complete the reinstall.

Download the PDF file again by visiting the website that you obtained the corrupted PDF file from. The file should be able to open correctly, but if you are still getting a corrupted file, PROCEED to the next step.

In case it can't assist you, then I would suggest you to look at https://forums.adobe.com/message/6978758