![]() ![]() When protected mode is on, you're unable to open PDF files in some cases. In protected view, the documents open, but the other features are all disabled. You can tell if the document is in protected view by looking for a yellow ribbon at the top of the document. There is also a protected view where most features are disabled. This security feature ensures that malicious code that may be resident in the PDF does not infect system directories and the Windows registry. Starting with version XI, Adobe Reader has a protected mode that runs files in a sandbox. Method 2: Disable the protected mode at startup A dialog box will notify you that the file(s) have been saved successfully. Step 3: Preview the repaired file or files and click Save Repaired Files, then click OK. ![]() ![]() Step 2: To start repairing the file, click Repair. To locate and add the file you want to repair, click Add. Launch the tool using the desktop icon.Then, click File Repair from the dashboard. Step 1: Download and install Wondershare Repairit from the website. Support Windows 11/10/8.1/8/7/Vista/XP and macOS 10.10 ~ macOS 13įollow the steps below to fix a damaged PDF file: Support to Fix text, hyperlinks, forms, headers, footers, graphs, watermarks, etc.Įxtract and repair all components of the PDF file without modifying the original file. Repair damaged PDF files with all levels of corruption, including blank files, files not opening, unrecognizable format, unreadable content, etc. We recommend Wondershare Repairit - File Repair, an software to repair damaged PDF files without making any modifications to the original file. In such a situation, the best thing to do is ask the sender to resend the file.įor damaged PDF files, the best solution is to use a professional PDF file recovery tool. The file may also get damaged while being sent over the email. Method 1: Check if the PDF file is damagedĮrrors sometimes occur during the creation of PDF files. So, how to fix the " PDF not opening" error? Let's now consider five different methods to fix the "cannot open PDF" error. Part 2: 7 Effective Methods to Fix the "Cannot Open PDF" Error. PDF files have a virus: The inbuilt Windows Defender or computer virus software can prevent you from opening a PDF file if a virus is detected. Corruption can occur due to incorrect power shutdown, software failure, or hardware malfunction. Damage is caused by an interrupted installation process, an update from Windows 7 to Windows 10, or the computer's file system's corruption. The damage could have occurred during the document's creation or email transmission where the document isn't correctly decoded.ĭamaged Installed Adobe Reader: A damaged installation of Adobe Reader or Acrobat often gives the error "cant open PDF file". The result is that you cannot display PDF.ĭamaged PDF files: Sometimes, someone may send you a damaged file. Unfortunately, some of these programs do not follow the correct standards. PDF files created using non-Adobe programs: Many programs can make portable document files. Adobe Inc continuously releases updates of its software to incorporate new features and enhance security. Outdated Acrobat or Adobe Reader: An outdated Adobe Reader or Acrobat program will throw this error. This problem is usually an inadvertent human error. Occasionally some files may erroneously have the default application set to Adobe Reader. ![]() To fix the Unable to Open PDF files using Adobe Reader error you have to modify the way the PDF is produced and make sure there is no extraneous bytes appeared before the PDF at the head of the file.Unsupported file type: This is the most common reason you cannot open PDF. In updated Adobe Reader, if the PDF does not correctly start with the PDF header are prevented from opening and you see the error message as mentioned above. But in the latest updates, the security has been improved by enforcing stricter parsing of the PDF Header. So it won’t perform any checks on the extraneous bytes which is present before the PDF header. Earlier, Adobe Reader will open the PDF file as long as the PDF header started within the first 1024 bytes of the file. This method of conversion will increase the PDF Header size. This error mostly occurs for the users who frequently convert documents to pdf by using Microsoft print to PDF. Then this article intends to help you to fix this issue. Sometimes while opening any PDF file if you encounter the following error message like Adobe Acrobat Reader could not open PDF because it is either not a supported file type or because the file has been damaged. ![]()
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