Do you know how Rlauzon says that you don't own a DRMed ebook, you just rent it? Well, that may be the literal truth the DRMed PDFs.
I copied the important posts here because registration is required.
Do a Google on
Adobe "This document cannot be opened on this machine"
It makes for interesting reading
Every once in a while I buy a text, or Fiction, in encrypted PDF, PRC or LIT, 'cause that was the only way an e-Book version was available. ie Hallowed Hunt by McMaster Bujold, Donald Moffitt, Lawrence Watt-Evans, Windows Texts, etc
I won't be making that mistake in future
I have 33 books that I used to be able to open in Acrobat Reader 6 & 7. On my new machine Acrobat 8 won't allow me to open them. I gather because they were downloaded on different machines and there is no way to register the new machine at Adobe with the old UserID/Password. You could register up to 6 Acro 6 or 7 machines but that feature isn't available in Acro 8.
Adobe's solution, re-download them from the vendor. Ha !
-Adobe shut their own shop, so I can't download from them
- Amazon only guarantees the e-Books for a limited period (I think it was a month) but in practice it seems good for one year. I contacted Amazon & they were sorry but they couldn't help me if the download period had expired, I would need to repurchase the encrypted PDFs, except for those that Amazon don't sell anymore/don't sell to Australia anymore
- Fictionwise seem to have similar time issues, encrypted PDFs I bought there two years ago can't be re-downloaded
Luckily I have hundreds of non-encrypted e-Books, it was a rare book that was only available in encrypted format
I won't be buying any more encrypted PDF's, or other formats which can't be decrypted.
There is a product, ConvertLit, to convert encrypted MS Reader files
Sometime 'round Feb to April this year I had lost a few encrypted PDF e-books from Amazon.
When I went to re-download them
1) I redownloaded them but was unable to activate them on my machine
2) I could not find any encrypted e-books in my Amazon Digital library that I had bought more than 1 year ago
I redownloaded & attempted to activate a Secure PDF from Fictionwise but could not activate it ("The Hallowed Hunt...Last download: 2007-04-10 10:20:20.397")
After a week or so of continued failure, I contacted Amazon about the PDFs I bought from them. Their support staff informed me that e-books were only guaranteed for a month & I would need to purchase any that had dropped off my Library. They were sorry but they unable to help me. I have not found that written anywhere on their site.
In practice encrypted e-Books drop out of my Digital Library after about 1 year. One book was no longer able to be bought because of my geographical location (which is Australia). Later that book was again available.
I also have non encrypted e-books at Amazon. They do not have this 1 year limit.
I did not contact Fictionwise about this because I still had working copies of my e-Books from them.
After reading the above responses I find
1) still no encrypted books older than 1 year in my Amazon Digital Library
2) I AM now able to activate Secure PDFs from Fictionwise from approx 2 years ago (The Hallowed Hunt) in Acro 6
Now that I can activate secure PDFs I will reinstall Acro 8 ADE & re-download a secure PDF from Fictionwise that was failing last night in Acro 8 to see what happens.
I am sticking to .LIT as much as possible as ConvertLit is out there for decrypting them.
thank you to all who advised me on this issue
Continuing the saga.
This afternoon at Fictionwise I could download & open the secure PDF "Hallowed Hunt" on my old machine with Acro 6 (I bought this book over 1 to 2 years ago). Tonight the required page can't be found when I click "Download Ebook". I've tried on my new machine with Acro 8 & have the same problem. Opening the book from within Acro 8 switches to IE & then nothing happens, I still can't open it.
I have 2 recent secure PDF purchases from Fictionwise, both of which currently DO download from IE into Acro 6 successfully on my old machine. On the new machine they also download from IE to ADE v1.0.467 (Acrobat 8's Digital Edition software) & successfully open.
None of my encrypted PDFs from Amazon are available in my Amazon Digital Library anymore as I bought them more than a year ago. None of them open in ADE. They still open in Acro 6 & 7 on machines which I have registered on the Acro 6 & 7 DRM activation website.
So, there you have it. If you can't re-download/re-activate the encrypted PDFs you can't open them in ADE. I have no interest in re-purchasing my Amazon ebooks, especially as those copies will also expire, so I'll be keeping copies of Acro 6 & 7 alive for now. If I buy encrypted ebooks they'll be MS LIT which I know can be decrypted