Knowledge Base

Whitelisting rpcss.dll for ATP


The rpcss.dll is not currently part of the Microsoft Catalog; therefore, when a Windows Update takes place, the Cylance Algorithm is flagging this as an unknown file and quarantines/blocks this from proceeding. This can cause the system to black screen and no longer boot.


Affected Products:

Dell Endpoint Security Suite Enterprise
Dell Threat Defense




To prevent this issue from occurring, a Safe List of the following SHA256 hash is needed:

038FDF99C643C8102026BA26A75899A56E91AD0C239DF71AA5443FD35C718C78

Once this is put in place, please commit the policy and verify that the endpoints have received the update.

If the machine is already in a non-booting state, please contact Dell Data Security ProSupport.


For additional support, US based customer can call Dell Data Security ProSupport at: 877.459.7304 Ext. 4310039 or you may also contact us via the Chat Portal. For support outside the US, reference ProSupport’s International Contact Numbers list. Visit the Dell Security Community Forum to get insights from other community members and additional resources to help you manage your environment.


Article ID: SLN306464

Last Date Modified: 06/02/2017 11:14 AM


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