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Desktop:
A new SSL certificate must be loaded for all DocuWare systems Version 6.5 and higher which utilize SSL for the Web Client – by November 1, 2015.
This is the only way to ensure that the full functionality of DocuWare Desktop remains available.

In order to load a new SSL certificate into a DocuWare system you can either update to  DocuWare Version 6.8 or run a hotfix for a specific DocuWare version.

Download Hotfix:
https://dwsupport.blob.core.windows.net/supportdownloads/hotfixes/6.5/DW6.5_Hotfix47.zip