"Verify that the Activity Feed Timer Job is enabled"
You can first try the resolve it Automatically under the Health Analyser. If that fails start it manually by following these steps:
- Go to Central admin
- Click on Monitoring
- Review Job Definitions
- Click on: User Profile Service Application - Activity Feed Job
- Choose how often you want to run it and click on Enable
Run the Re-analyse now and refresh your screen. Should be resolved.
Quick and Easy!