1-800-691-1991 | 9am - 8pm ET

Veeam Backup & Replication plug-in missing in vSphere HTML5 Web Client after upgrade to VMware vSphere 6.7

KB ID: 2677
Product: Veeam Backup & Replication
Version: 9.x
Published: 2018-07-03
Last Modified: 2021-01-27


After installing Veeam 9.5 Update 3a and simultaneous upgrade of vSphere from 6.5 to 6.7 Veeam vSphere Web Client Plugin might stop working for vSphere HTML5 Web Client.  However it is still operational in vSphere Flash/Flex Web Client.

The issue is only reproducible in case the plugin was present on the vCenter prior to upgrade. The installation logs on vSphere side will show:

[<date and time>] [INFO ] vc-extensionmanager-pool-<id>  70000019 100003 200001 com.vmware.vise.extensionfw.ExtensionManager  Plugin package com.veeam.backupui.VeeamBackupUi: was not deployed because attribute type="html" is missing, which is normal if this is a Flex plugin


The issue is caused by changes introduced in VMware vCenter Server 6.7.0a


Issue resolution requires complete plugin re-installation:

  1. Unregister the plugin via Enterprise Manager interface.
  2. Connect to the vCenter appliance via SSH and Remove the plugin:
rm -r /etc/vmware/vsphere-client/vc-packages/vsphere-client-serenity/com.veeam.backupui.VeeamBackupUi-*/ 
rm -r /etc/vmware/vsphere-ui/vc-packages/vsphere-client-serenity/com.veeam.backupui.VeeamBackupUi-*/ 
rm /etc/vmware/vsphere-client/cmCatalog/com.vmware.cis.com.veeam.backup.quickbackup.zip 
rm /etc/vmware/vsphere-ui/cmCatalog/com.vmware.cis.com.veeam.backup.quickbackup.zip 
rm /etc/vmware/vsphere-client/cmCatalog/com.vmware.cis.com.veeam.backup.veeamzip.zip 
rm /etc/vmware/vsphere-ui/cmCatalog/com.vmware.cis.com.veeam.backup.veeamzip.zip 
  1. Restart VMware services responsible for web-interface:
    • Either via SSH to the vCenter: 
      service-control --stop vsphere-client 
      service-control --stop vsphere-ui 
      service-control --start vsphere-client 
      service-control --start vsphere-ui
    • Or via Appliance Manager (port 5480) by restarting these services:
      VMware vSphere Web Client
      VMware vSphere Client
  2. Install Veeam vSphere Web Client Plugin from Enterprise Manager.
  3. Login to vSphere Web Client HTML5.
  4. Please note the last step should be performed twice – on first login plugin will be installed, however, it will only appear after the second login.

More Information

The steps in this article will require access to the vCenter Appliance shell. More information on this process can be found here:

VMware Userguide: Access the Appliance Shell

VMware Userguide: Enable or Disable SSH and Bash Shell Access

KB ID: 2677
Product: Veeam Backup & Replication
Version: 9.x
Published: 2018-07-03
Last Modified: 2021-01-27

Couldn't find what you were looking for?

Below you can submit an idea for a new knowledge base article.
Report a typo on this page:

Please select a spelling error or a typo on this page with your mouse and press CTRL + Enter to report this mistake to us. Thank you!

Spelling error in text

Knowledge base content request
By submitting, you are agreeing to have your personal information managed in accordance with the terms of Veeam's Privacy Policy.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

ty icon

Thank you!

We have received your request and our team will reach out to you shortly.


error icon

Oops! Something went wrong.

Please go back try again later.