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Web Client Plug-in error: “invalid Single Sign-On token”


When a new user of the vSphere web client attempts to access the Veeam Web Client Plug-in, they encounter the following error:

Server error: Failed to login to Veeam Backup Enterprise Manager. Login failed due to invalid Single Sign-On token


To successfully obtain statistics from Veeam Backup Enterprise Manager, the accounts under which users access the vSphere web client (and then automatically connect to Enterprise Manager) should be assigned one of the Enterprise Manager security roles.

To open Veeam ONE reports (optional capability), these accounts should be also included in Veeam ONE Users or Veeam ONE Administrators group on the machine where Veeam ONE Server component is installed.


In Backup Enterprise Manager:
1.       Open the Configuration tab.
2.       Open the Roles section on the left of the Configuration view.
3.       Click Add on the toolbar.
4.       In the Account type field, select the type of account you want to add: User or Group.
5.       In the Account field, specify the user account in the DOMAIN\Username format.

From the Role list, select the necessary portal role to be assigned. Portal Administrator is recommended to have access of all features of the Web Client Plug-in.
Veeam Backup & Replication
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