Adobe Reader DC 2020 Not Closing After Signature Added
I have an issue with Adobe Reader DC on Citrix servers where when a user adds their signature into a document and does a Save As to create a new one, the AcroRd32.exe and RdrCEF.exe executables stay open in task manager after closing down the Reader GUI. When trying to open Reader again, it hangs for a very long time befor it gives the "Acrobat failed to connect to a DDE server." error. I have tried uninstalling/reinstalling using the removal tool. I've tried different OS's, but the issue persists. For clarity I have tried:
Scenario 1: Server 2008 R2 / XenApp 6.5 / Reader DC 2020.009.20063
Scenario 2: Server 2016 / XenDesktop 7.15 / Reader DC 2019.010.20098
Scenario 3: Server 2016 / XenDesktop 7.15 / Reader DC 2020.009.20063
The only thing I can think of is that adding a signature invokes some call to Adobe Cloud that I can't find any documentation on that we may be blocking at the firewall level.
Any suggestions would be appreciated.
