Blank PDFs, not opening, could not connect to DDE server (2018.009.20044)
So far four people in our organization (all running Windows 10 1607) are having various problems with Acrobat Reader DC (2018.009.20044).
One user opening PDFs downloaded from Xero appear to be blank but when opened on any browser (Chrome, Firefox, Edge) content appears.
All affected users eventually aren't able to open PDFs whatsoever and there are several instances of Adobe Reader in task manager and when these tasks are ended, users can open PDFs again for a limited time. Sometimes PDFs will also not open from Outlook 2016.
I have attempted re-installation and repairs but these only work temporarily.
Some of these users had an error "Acrobat failed to connect to a DDE server." and the issues have appeared to have begun from this. Sorry if I'm not entirely clear but this issue has really got me scratching my head.
