Vcenter Creating a snapshot fails

Symptoms

  • Backup of a virtual machine with Veeam or VMware Consolidated Backup fails
  • Creating a snapshot fails
  • No snapshot is created even though the Create Virtual Machine Backup task appears in the ESX host
  • If you attempt any task on the virtual machine, VirtualCenter reports:Operation failed because another task in progress
  • You cannot connect VMware Infrastructure Client direct to the ESX host

Resolution

This issue may occur if the ESX management agents become unresponsive.
1- Confirm that there are no pending tasks.
2- You must restart the management agents with following commands
First, login to SSH or local console as root and run there commands;
#/etc/init.d/hostd restart
#/etc/init.d/vpxa restartNote: In ESXi 4.x, run this command to restart the vpxa agent:

#service vmware-vpxa restart

Alternatively to restart all management agents on the host, run below command:
#services.sh restart