unable to open zip file within PDF

[fabio0D45]

hello, I',ve found this answer

https://community.adobe.com/t5/acrobat-reader/adobe-acrobat-reader-2017-unable-to-open-zip-file-with...

to solve the problem, but it simply does not work ...

Using Acrobat X Pro (italian version) + win 7 pro (sp1).

Pls look at the scrrenshot.

Thanks for the help!

[Test Screen Name]

Those instructions are for Acrobat DC. No idea if they can work with such old software. 

[fabio0D45]

thanks. Btw I tried also with DC but result is the same ... 

I've generated a PDF file by converting a folder that contains various messages, many with attachments (other PDFs, jpgs and so on - as well as .zip files).

Once the PDF file is generated I can save all attachments EXCEPT .zip ....

the result is the same with DC

thanks

[Test Screen Name]

Ok... what exactly did you do? (Note that embedding ZIP is VERY MUCH not a recommended workflow).

[fabio0D45]

as I wrote above, I've generated a PDF file by converting a folder that contains various email messages, many of them with attachments (other PDFs, jpgs and so on - as well as .zip files).

I'm able to save ANY attachment BUT zip files ... (yes. I know it could be dangerous but I'm absolutely sure where the zip files came from).

Thanks again!

[Test Screen Name]

You said "I tried also with DC but result is the same" -- I assumed that meant you tried the detailed instructions in Adobe's help page to allow it to open ZIP files. So I wanted to check what steps you followed, exactly?

[fabio0D45]

yes, I tried also the instructions in Adobe's help page

https://helpx.adobe.com/in/acrobat/using/attachments-security-risks-reader-acrobat.html#targetText=Y....

I tried EDIT -> PREFERENCES -> TRUST MANAGER ->

and flagged

"allow opening of non-PDF file attachments with external applications"

but no way, I receive always the same error

[Test Screen Name]

That seems to be a part of the instructions only. Did you also add to the white list?

[fabio0D45]

.. I think this is the crux of the matter! how can I add .zip files to the white list?

[Test Screen Name]

I haven't tried it, but the linked page has detailed instructions under "Manually add a file type to a black or white list". Don't they work?

[fabio0D45]

If I follow the instructions, in fact, I can attach a zip file, saying it is reliable.

But once attached to the document - it will seem incredible - the reverse operation is no longer possible! (i.e. download!)

[Test Screen Name]

What message do you now get when you try to open an attached ZIP file?

[fabio0D45]

this one:

(always the same!)

thanks a lot

[fabio0D45]

maybe I've found a solution:

https://community.adobe.com/t5/acrobat/allow-zip-files-as-attachments-in-pdfs/td-p/2274229?page=1

and in particular

dangerous yes ... changing the register is somtimes a leap in the dark .. but it seems to work