To try and resolve the "Unable to communicate with CAMI Programs on the server" error, you will have to Start/Restart CAMI_RPC Service in services.
You can restart the CAMI_RPC Service by following the steps below:
- Go to Server
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Open Task Manager
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Go to the Services tab
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Choose CAMI_RPC service
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Right Click
Select Restart/Run CAMI RPC Service