All files exported to pdf have same syntax issue after one 'failed to create pdf' error

[sv19167988]

I'm suddenly running into an error with every file I try to export from InDesign to pdf. Regardless of the file -- existing file that's big/complex, new file with literally one sentence in a text frame, saved as indd, saved as idml -- when I export to pdf, my pdf has the following syntax issue:

General File Format Error: Key missing though required by other key

• The key /LastModified must be present when key /Pieceinfo is used

• The key /First must be present when key /Count is used

The whole thing started after an export failed (i.e., I got a "failed to create pdf" message). I just backed out, restarted and tried again. Now I can export pdfs but they're all perceived as corrupt b/c of the syntax error. The file preflight in InDesign shows no errors, but the files are perceived as corrupt. When I pull them up in Acrobat and check tools, preflight, I see the reported errors.

I've uninstalled and reinstalled and cleaned the registry in between but the problem remains, for files created both before and after the reinstall. I also ran a disk check but Windows 10 says everything's fine. Can someone help me figure out how to fix this?

[Eric Dumas]

Can you confirm the version of the software and operating system you are using.

[sv19167988]

Acrobat Pro DC, Version 2020.006.20034

InDesign 15.0.1 x64

Windows 10 1909

[sv19167988]

Actually, I've just discovered that the issue must lie entirely within Acrobat and/or my machine. I tried editing a pdf -- one created months ago -- to fix a typo and when I saved it as a new version, got the  

• The key /LastModified must be present when key /Pieceinfo is used

error.

I hope this gives a clue to what's going on ... I really need to get this fixed. Appreciate your help!

[Ronsen]

Hello Community,

I have exactly the same issue as described here, with InDesign 15.0.2, Acrobat Pro DC 2020.006.20034 under MacOS 10.15.3.

I also reinstalled InDesign completely, but the problem keeps on. Maybe something's wrong with the PDF-Library...

Is there any solution?

[NCPcoatings]

I don't see a precise solution yet. 

I have same problem, but I've discovered that if I open a PDF through Creative Cloud Desktop > Acrobat:Web [Launch] then download the (same?) PDF file from the web, I am able to print (Canon iR-ADV C5840).

Non-CC applications (for example, MS Excel) can convert documents theough "Save as Adobe PDF" and print as usual.