Can't clear Alert

I am receiving an alert on a server I monitor. The alert is for System Uptime the Instance is WinSystemUptime and the Datapoint is SystemUpTime. 

When I research this it seems the collector does not has access or credentials to get the data. I went through the troubleshooting guide, made sure the required services were running, then checked connection using WBEMTEST. The service is set to local system. I even tried to set it as the local admin account and this did not work. I checked the configuration of a collector on the same subnet and it has the same settings, not sure what the issue could be.