Problem with e-mail function in Adobe Reader

Hello,

An acquaintance has a problem with the e-mail function in Adobe Reader.

He uses a scan application called Canon MP Navigator to scan a document to PDF.

The scanning works fine and after the scan is finished, the PDF-document is opened.

But the problem start when he wants to send the opened PDF-document by e-mail.

When he presses the e-mail button he gets the error: 'A problem occurred with Acrobat. Some functions might not work as expected' (Dutch: Er is een probleem met Acrobat. Enkele functies werken mogelijk niet naar behoren). (See attached screenshot)

The strange thing is, that if he closes the PDF-document and reopens the same PDF-document in Adobe Reader (from Windows Explorer), everything is working fine. So it seems there is something wrong with the process that receives a PDF-document from an external application.

When he presses the 'More info' (Dutch: Meer info) button, it opens the following page: https://helpx.adobe.com/acrobat/kb/acrocef-rdrcef-errors.html

I've tried all 4 solutions on that page, but none of them seems to solve the problem.

I've updated MP Navigator as well as Adobe Reader on his PC to be sure it's not a version incompatibility, but it didn't help.

I've also completely removed both applications and reinstalled them, it didn't help.

I've also disabled the virusscanner (F-secure) he was using, to be sure it was not a problem with a blocking application, but this didn't help either.

Does anyone recognize this problem and has a solution for it?