Firefox not recognizing .pdf downloads

Some web servers are misconfigured and don't tell the browser that a file is a PDF. In this case the file will still be downloaded even when this addon is active. If you encounter a PDF that is downloaded feel free to send the URL to the support email address so I can check if this it's a bug in the addon or just a server issue. Log in to rate this extension. Report this add-on for abuse. After entering data into these fields you can download the file to have the filled-out version saved to your computer.

Grow and share your expertise with others. Answer questions and improve our knowledge base. Search Support Search. Note : This feature is available starting in Firefox version 83 and higher. Was this article helpful? Volunteer Grow and share your expertise with others. If you clear all temporary Internet files, you could delete the cookies that contain login information and preferences.

Most browsers let you choose the type of content you want to delete. Firefox: Delete browsing, search, and download history. Chrome: Delete your cache, history, and other browser data.

Internet Explorer 8 through 11 : Viewing and deleting your browser history. Internet Explorer 7 : Delete webpage history. Acrobat and Reader are bit applications on Windows. Note: Only Reader In some versions of Internet Explorer, select the question mark in the upper-right corner to select About Internet Explorer. To switch to the bit Internet Explorer, first exit bit Internet Explorer.

Then double-click the program icon for the bit version:. Reader or Acrobat could be damaged. Repairing the installation is a quick troubleshooting safeguard. If none of the solutions in the previous sections solve the issue with viewing PDFs, you can try the following advanced steps. For example, on some systems, the add-on appears when you select Run Without Permission.

Note: If the button says Disable, then the add-on is already enabled. This button toggles between Enable and Disable, depending on the status of the selected add-on.

Make sure that File reads "nppdf Create a user account that has the same permissions as the account you use when the problem occurs. Or create a local administrator account. If the problem doesn't recur when you log on to the new account, then the original user account could be damaged.

For information on setting up a user account, refer to the following resources or contact your network administrator:. Windows XP: To add a new user to the computer. Disclaimer: The registry contains system-related information that is critical to your computer and applications.

Before modifying the registry, be sure to make a backup copy of it. Adobe doesn't provide support for problems that can arise from improperly modifying the registry. Adobe strongly recommends that you have experience editing system files before you modify the registry. For more information about the registry, see the Windows documentation or contact Microsoft. Note: If Acrobat or Reader isn't installed in the default path, make sure that the key's Default value points to the actual location.

For a video demonstration of the procedure, see Check the correct registry path. Type the default path listed above in the "Value data" for your product. It is possible that this key is damaged, is pointing to an obsolete version of Acrobat or Reader, or is pointing to a third-party PDF viewer. Right-click AcroExch. Document and choose Delete ; make sure that you have the correct key, and click Yes on any prompts.

For instructions, see the documentation that came with the web server, or see this Microsoft support article. Legal Notices Online Privacy Policy. Troubleshoot viewing PDF files on the web Search. Adobe Acrobat User Guide. Select an article: Select an article:. Common symptoms when you can't view a PDF on the web:. Please exit and try again. Update Reader or Acrobat.