vcenter does not start.

vcenter is linked to Horizon.

The certificate of vcenter was expired yesterday.

someone rebooted vcenter and vcenter does not start.

Today I used option 8 of the vsphere certificate manager.

but vcenter not start.

i found the log

[Thread-9  WARN  com.vmware.cis.server.util.impl.InitPoolTask  opId=] Init pool encountered exception: com.vmware.cis.server.util.exception.VpxdClientException at attempt

[Thread-9  WARN  com.vmware.cis.server.util.impl.InitPoolTask  opId=] Init pool encountered exception: com.vmware.cis.server.util.exception.VpxdClientException at attempt

[Thread-9  WARN  com.vmware.cis.server.util.impl.InitPoolTask  opId=] Init pool encountered exception: com.vmware.cis.server.util.exception.VpxdClientException at attempt

[Thread-9  WARN  com.vmware.cis.server.util.impl.InitPoolTask  opId=] Init pool encountered exception: com.vmware.cis.server.util.exception.VpxdClientException at attempt

this log repeated

and i did that all service start and stop.

what's problem?

please help!