N/APosted on - 07/18/2011
Hi guys, I am at our office, my boss ask me to open a PDF file that is locked, I search on the internet for software that is capable of doing so, I installed Advanced PDF Password Recovery to open the locked file, an error message was displayed when I am about to open the file, it said 128-bit security v.4 encryption handler, this protection method is not supported.
This document was created with ‘Adobe LiveCyycle Policy
(Adobe.APS[adbe.pdrl.v0]) 128-bit security v.4’ encryption handler.
This protection method is not supported.
When I analyzed the error, I am wondering of the capabilities of this application, or does the file I open has an error, I am having a hard time isolating the problem, please comment on my issue, thanks.
Advanced PDF Password Recovery: Protection method is not supported
You can check following things before you open a file.
First thing is to check that you have installed a up to date version of Adobe acrobat reader.
Then you need to install the updates if there some software updates are available.
If you are downloading the file form the network then you need to make sure that you have fully copied the file.
Then check that the file doesn't contain some errors such as some virus or some other problem.
Try the file on another computer and make sure that it works on that computer.
If the file requires some password then call your boss and try to find the password.
You can also create a recovery file for this kind of file you need to open.
I think that if you have checked all of these points then you will be able to see your file as opened.