Check the official website One of the leading developers of PDF-oriented products is Adobe, with its proprietary line of software tools known as Adobe Acrobat. Adobe Acrobat Reader is one of their most popular programs and by far the world’s most popular PDF reader, thanks to the simplicity and the feature richness it brings. Nevertheless, some users have been experiencing issues with Adobe Reader, and they have discussed this issue on the Adobe Support Community forums: 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?
1. 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. 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.
2. Try a different PDF viewer
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. It is also possible to try out a different PDF viewer for this task. One great alternative is Icecream Ebook Reader. Although it was designed for eBooks mostly, for sure you can use it for any large PDF document. This top-notch PDF viewer allows you to resume reading where you left it, mark your favorite parts of a book, alter the text to better suit your needs, and much more. ⇒ Check out Icecream Ebook Reader 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. ⇒ Use Adobe Acrobat Reader ⇒ Use Adobe Acrobat Pro DC Did you find this guide useful? Let us know in the comment section below.
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