The Adobe Reader application is an extremely useful tool. It helps maintain the integrity of formatting when sending documents, allows users on most every device to open .pdf documents in a readable format without issue, and allows users to open files saved as .pdf files without the need for installing or purchasing other third-party applications. However, changes and updates can sometimes cause programs to be slightly less effective. Following the steps above will remove the content preparation progress popup that some users are seeing each time they open a .pdf.