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Why I cannot Rotate Protected PDF?
PDF Rotator can automatically rotate restricted PDF files, which are owner password protected PDF file type. These files can be opened by PDF reader smoothly, but doesn't allow users to print, convert or copy the content.
However there is another encrypted PDF type named user password protected PDF. If you try to open this type of PDF files, PDF reader will ask you for the password. If you don't have the password, you cannot even see the PDF content.
PDF Rotator cannot rotate the user password protected PDF.