This has been linked to an older version of OpenEdge being used. Version 11.7.6 or higher will be required. In order to check the installed version locate the Proenv program on your Start menu, this will display the full version number.
If an update is required an installer for 11.7.6 can be found here.
It's important that you check the properties of the Zip file and Unblock if Windows is blocking it, once done you can extract and run the installer.
If this is a terminal server then make sure all users are fully logged off and the server is in install mode if required.
PLEASE NOTE: If this is a Database Server or a Web Services server please contact Support as the install will need running manually to ensure this still works. If you're not sure then open Task Manager and go to the Services tab, if there is an Admin Service for OpenEdge then do not run the installer.
This error can also be caused by expired/invalid certificates on the user's machine.
To fix this issue, firstly test to make sure that the certificates are valid on the main server:
Open the case key that is affected on the server
Navigate to the SDLT Overview screen
Press submit
As long as there are no errors returned when testing this via the server, proceed with the steps below:
Ensure that proclaim is closed on the machine with the error.
Navigate to \\SERVER\Progress\Openedge11
Make a zipped copy of the certs folder
Place the copy in \\SERVER\Prodisk folder as it is a shared network drive
On the local machine that is having the issue, navigate to the \\SERVER\Prodisk folder and retrieve a copy of the zipped certs folder
Rename the certs folder in C:\Progress\Openedge11 to certsold
Drag the certs folder from the zipped file into C:\Progress\Openedge11
Test the SDLT submission.
If there are any further issues, please raise a new case online and reference the title of this article.