- Certain advanced features in PDFs are not compatible with other editors than Adobe.
- If you get errors when trying to reopen PDFs using Adobe, read below.
- Our website features an Adobe Hub with guides to fix any problem you might encounter.
- We also have a full collection of troubleshooting articles in the Troubleshooting page.
PDF files are incredible as far as file types go. They can be text documents, images, and many more, and they are all compatible across all the available versions.
One of the leading developers of PDF-oriented products is Adobe, with its proprietary line of software tools known as Adobe Acrobat.
One of their most popular programs, Adobe Acrobat Reader, is the world’s most popular PDF reader, thanks to the simplicity and the feature richness it brings.
Some users have been experiencing issues with Adobe Reader, and they have discussed this issue on the Adobe Support Community forums:
I have filled up a form using Foxit Reader. When I tried to open the form with Adobe Acrobat Reader DC I got error The document enabled extended features in Adobe Acrobat Reader DC. The document has been changed since it was created and use of extended features is no longer available. Please contact the author for the original version of this document. I tried some other PDF programs, no issue when opening this form.
Apparently, the problem was with how the user handled the PDF file in the first place.
How can I use all the extended features of Adobe Reader?
Try using only Adobe products
Adobe Reader is the premier solution for viewing, creating, managing, and printing PDF files. It is a widespread format used in many situations.
Actually, the .pdf file was developed by Adobe, the same company that has Adobe Reader. So who wouldn’t know more about PDFs than the actual creators?
To use all extended features in Adobe Reader you shouldn’t make changes to the document in a different program. Keep using the same product family.
Not only does this ensure that you won’t encounter any errors, but it will also pave the way for important product updates and special deals for other product versions or new releases.
Adobe AcrobatManage your documents only with the PDF standards global trendsetter, Acrobat Reader. Try it now!
It would seem that whenever you create a PDF file with an Adobe product, a digital signature is applied. Apparently, only other Adobe products are able to modify and re-save documents without breaching that digital signature.
In the case at hand, the user broke the seal by using another PDF editor (Foxit), and the PDF became unusable once it was opened with an Adobe product again.
If all you are interested in is viewing or printing the document, then you can simply ignore the error message altogether. But if you want to edit or change security preferences, then you will need to fix the document first.
Note that it is possible that other developers use the same digital signature feature on PDF files. Anyway, as far as Adobe products go, try using only their programs when creating, viewing, or editing PDF documents.
Did you find this guide useful? Let us know in the comment section below.
FAQ: Learn more about Adobe Reader extended features
- What is an extended PDF?
It’s a special type of PDF that enables access to more features inside Adobe Reader. However, these features are not compatible with other PDF editors.
- How do I enable all features in PDF?
When you open a PDF file in Windows, sometimes it is opened in a Protected View mode. This disables certain features for security reasons. Click on the Enable All Features button that appears in the notification bar after you open the file.
- How do I update my Adobe Reader?
Launch the Adobe Reader program. Go to Help and click on Check for updates. Follow the instructions from the Updater window.
Editor’s Note: This post was originally published in December 2019 and was revamped and updated in April 2020 for freshness, accuracy, and comprehensiveness.