A 50003 error message appears when launching Service Accent / Remote solutions are not processing requests and the remote console window is blank

Microsoft Windows update KB3139940 has been identified as the cause of this problem

https://support.microsoft.com/en-gb/kb/3139940

Removing this update and restarting the computer restores the export to PDF functionality.

To remove this update:

1. Open Programs and Features by "Start" > "Control Panel" > "Programs and Features"
   
2. View installed updates by clicking on "View installed updates"
   
   
   
   
   
3. Search for KB3139940
   
   
   
   
   
4. Uninstall the update
   
   
   
   
   
5. Restart your PC
   
   

The Microsoft Update process WILL attempt to re-install the update again unless it is prevented. Please seek advice from your IT support to ensure that this update is prevented from being re-applied.