ESXi/ESX host fails to go into maintenance mode
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ESXi/ESX host fails to go into maintenance mode


Article ID: 313440


Updated On:


VMware vSphere ESXi


This article provides steps to troubleshoot issues when you are unable to put an ESXi/ESX host into maintenance mode.

  • An ESXi/ESX host does not enter maintenance mode.
  • You cannot remove the ESXi/ESX host from vCenter Server.
  • Hosts fail to migrate when attempting to enter maintenance mode.
  • The progress indicator remains at 2% indefinitely in the vSphere Web Client.
  • A VMware vMotion fails at 10%.
  • You receive one or more of these errors:
    • Could not power VM, no swap file, failed to power on VM.
    • VMControl error -11: No such virtual machine.
    • A general system error occurred. The system returned on error. Communication with the virtual machine may have been interrupted.
    • Migration will cause the virtual machine's configuration to be modified to preserve the CPU feature requirements for its guest operating system.
    • Operation timed out
    • A general system error occurred:
    • Failed waiting for data. Error 16. Invalid argument


VMware ESXi 4.0.x Embedded
VMware ESXi 4.1.x Embedded
VMware ESXi 4.0.x Installable
VMware ESX 4.1.x
VMware ESXi 3.5.x Installable
VMware vSphere ESXi 5.5
VMware ESXi 3.5.x Embedded
VMware ESXi 4.1.x Installable
VMware vSphere ESXi 5.0
VMware vSphere ESXi 5.1
VMware ESX Server 3.5.x
VMware ESX 4.0.x


Validate that each troubleshooting step below is true for your environment. Each step provides instructions or a link to an article to eliminate possible causes and take corrective action as necessary. The steps are ordered in the most appropriate sequence to isolate the issue and identify the proper resolution. Do not skip a step.
  1. Verify if there are orphaned virtual machines in the vCenter Server inventory.

    All virtual machines on the ESXi or ESX host must be migrated to another host or shut down before the host is placed into maintenance mode. If there are orphaned virtual machines in the inventory, the host cannot be put into maintenance mode. Ensure that the orphaned virtual machines are removed before attempting to put the host into maintenance mode. For more information, see Virtual machines appear as invalid or orphaned in vCenter Server (1003742).
  2. If an ESXi/ESX host is a part of VMware High Availability (HA) or DRS cluster, check the Admission Control settings. You may have to disable this option if there are not enough resources to ensure fail over capacity. For more information, see:
  3. If the ESXi/ESX host is a part of a fully automated DRS cluster, but the Enter Maintenance Mode task hangs at 2% in the vSphere Web Client, try motioning the virtual machines between the hosts in the cluster. This test helps you to determine the reason for the maintenance mode issues. For more information about troubleshooting motion issues, see Diagnosing a vMotion failure at 10% in vCenter Server (1003734).
Note: If your problem still exists after trying the steps in this article:

Additional Information

Understanding and troubleshooting vMotion
Virtual machines appear as invalid or orphaned in vCenter Server
ESX/ESXi host in a VMware High Availability cluster fails to enter maintenance mode and stops at 2%
Collecting diagnostic information for VMware products
ESX/ESXi host unable to enter maintenance mode in a two node cluster
ESXi/ESX ホストでメンテナンス モードへの切り替えに失敗する
ESXi/ESX 主机无法进入维护模式