When you upgrade an environment from Deep Security 9.0 Service Pack 1 Patch 4 to version 9.5 Service Pack 1 or any higher version, the Deep Security Relay (DSR) status shows the following:
Matching Module Plug-in Not Found
The issue still persists even after re-installing the Deep Security Relay.
The issue happens because the update package (Agent-Windows-9.5.3-2754.x86_64.zip) cannot be found from WWWListing and the DSR is downloading the 32-bit package instead of the 64-bit.
To resolve the issue:
- Upgrade Deep Security Manager 9.0 SP1 Patch 4 to version 9.5 SP1.
- Go to Administrator > Updates > Software > Local and import the update package (Agent-Windows-9.5.3-2754.x86_64.zip).
- Navigate to Computer > Action.
- Click Upgrade Agent Software to upgrade the DSR.