AnsweredAssumed Answered

Ryzen CPU and Outlook 201x s/mime encryption and digital signature not possible

Question asked by ronaldb on Jul 3, 2019
Latest reply on Jul 11, 2019 by ronaldb

Dear AMD Community,


with a brand new Windows 10 System with a Ryzen CPU it was not possible to use a digital signature with Outlook 2016/2019. The Problem is described in detail here: Signatur mit S/Mime-Zertifikat in Outlook 2016 schlägt fehl - Microsoft Community 


Microsoft found the issue in cooperation with the users which have the issue. Solution is to delete the [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Cryptography\Providers\AMD Providerkey in the registry. 


Reason for that is the missing amdumcsp.dll which should be located in C:\Windows\system32.


Can someone from the AMD Stuff confirm this and provide the amdumcsp.dll for Windows 10? Just with this DLL S/MIME will work on Windows 10 with Ryzen CPU / AMD Chipset out of the box. 


Thank you very much

Kindly Regards