See what you can do to fix the problem quickly. Adobe Acrobat Reader could not open PDF Earlier, Acrobat products performed no checks on the extraneous bytes present before the %PDF-header.

Are you experiencing Adobe Acrobat Reader DC not opening on your Windows computer? Several factors can cause this issue such as an internet connection issue, incorrect time and settings, or a ...

Problems with files lacking .pdf extension MacFixIt reader Don reports an issue where files lacking a .pdf filename extension fail to properly open after updating to Adobe Reader 7.0.8 -- a ...

Changes in browser PDF display As noted by several readers, Adobe Reader 7.0.8 installs a plug-in that obviates Apple's mechanism used to display PDF documents in Safari.