You cannot repair a damaged PDF itself. However, if you have the source file, you can re-create the PDF using an Adobe product, such as Acrobat or Photoshop Elements.
Open a PDF in your browser
Try this if you’re having trouble opening a specific PDF on a web page. This won’t work for other PDFs.
Update Reader or Acrobat
Adobe releases regular security updates for Reader and Acrobat. Do the following to see if the latest update patch might solve the issue:
Repair Reader or Acrobat (Windows only)
Reader or Acrobat—or the resources they depend upon—could be damaged. Try fixing the problem using one of these methods:
Remove and reinstall Acrobat or Reader
Make sure your OS recognizes the PDF
Your system may not be set up to automatically open PDFs from the desktop with Reader or Acrobat. Here's how to set it up:
Other issues you may encounter
The creator of a PDF can add password security to a document to prevent unauthorized users from viewing the PDF.
To open this type of document, enter the password when prompted. If the PDF creator has not shared the password with you, you cannot open the PDF.
Reader and Acrobat block PDFs that do not conform to certain industry-specific PDF standards, or may contain potentially harmful content.
Be cautious. These PDFs can pose a security risk to your system. Double-check with the source of the doc, such as the person who sent it to you or the website you downloaded it from, to make sure the document is safe to open, then proceed with the rest of the troubleshooting steps.
When you try to view a PDF on a website, you see one of the following:
- A blank page in your browser
- A red X icon
- A broken-link indicator (a red square, a blue triangle, or a blue circle)
- The error message: "The Adobe Acrobat/Reader that is running cannot be used to view PDF files in a web browser. Adobe Acrobat/Reader version 8 or 9 is required. Please exit and try again."
Try the solutions beginning at the top of this page, and if you still can’t view the PDF, view Troubleshoot viewing PDF files on the web.
PDFs created with non-Adobe products or earlier versions of Reader or Acrobat may not open in Reader or Acrobat.
If you trust the creator of the PDF and its origin, consider reverting to an earlier version of Reader or Acrobat to open the PDF. Reverting to an older version requires first uninstalling the version of Acrobat or Reader currently on your drive.
(Reader) See Reader older versions.