For Chrome, we can simply remove any of the following files. 1) Adobe Acrobat Pro DC.exe — Remove this file when you are starting Acrobat 2) Adobe Acrobat DC.exe — Remove this file when you are starting Acrobat. Adobe Reader and PDFs in Chrome are really great, we don't have any issues with PDF's opening. It is possible that when we are creating PDF's, the documents are not saved automatically. Is my computer, or Acrobat, already stopped from opening Adobe Reader PDF's? If you are using any other PDF application, like Chrome, Firefox, or Internet Explorer, you can disable these applications by the following steps 1) Open Chrome Settings. Click on Tools > Extensions. Click Add new > Remove Chrome extensions. You will be prompted to remove the extensions listed below. When prompted, click the Add button. 2) In the toolbar that appears, scroll to chrome://extensions. Click Remove, and then click Remove from Chrome to remove them. How much time does it take to restore the PDF? (If you are a first time user) This method could take anywhere from one hour to a day to restore the PDF. The process depends on how many books were opened, the PDF was saved, etc. It could take more than one hour depending on how many PDFs you have opened within the time between each opening. (Don't worry, the process should take longer) Note: A good method for restoring PDF's takes the entire month of May to restore all PDF's in an order of size and time. How much time does it take to restore the PDF? (If you are a first time user) This method could take anywhere from one hour to a day to restore the PDF. The process depends on how many books were opened, the PDF was saved, etc. It could take more than one hour depending on how many PDFs you have opened within the time between each opening. (Don't worry, the process should take longer) Note: A good method for restoring PDF's takes the entire month of May to restore all PDF's in an order of size and time. It would also take a day to restore the PDFs to the previous state.