Fix 'Download patch definitions' in VMware Update Manager task On Queued

Got this issue when Recent Tasks in vCenter showing 'Downlad patch definitions' on Queued state.
RESOLUTION: 
1) RDP to vCenter server.
2) @cmdline type services.msc
3) Locate for VMware vSphre Update Manager Service and Stop and Start services again.
4) In vCenter server Recent Tasks it should shows on Completed state.