In 2012 I closed a contract with a phone store who does not exist anymore. Th document is secured with a password which I can't remember anymore and can't find in my documents. I have by now looked and tried dozens of passwords the last couple of hours. I am at my wit's end. Who knows how to crack this old document?? TXS in advance.
Crash or freeze, General troubleshooting, Security digital signatures and esignatures
If you have forgotten the document password to open the PDF, there isn't much that can be done. You may consider creating the new PDF from the original source file. If you have got the PDF from the different user you may contact the author/creator of the PDF file to share the copy of the PDF.