If using the default Log in using Windows credentials checkbox, the current user account must be a member of the Veeam Virtualization Extensions Users group.
If you run Mozilla Firefox and try to access the Veeam UI remotely using the Login using Windows credentials option, you will need to perform an additional configuration:
1.In the address bar, enter about:config.
2.In the list of configuration options, find network.automatic-ntlm-auth.allow-non-fqdn.
3.Set the network.automatic-ntlm-auth.allow-non-fqdn configuration option value to ‘true’.
To log in using different credentials of the Veeam Virtualization Extensions Users group member, clear the Login using Windows credentials check box and enter the username and password for the corresponding admin account.
Login using Windows credentials checkbox not displayed
When a distributed Veeam installation is used, where the VE Service is installed on a different server from the Veeam UI web site, the Login using Windows credentials check box will not be available as account delegation across servers is not supported.
Page does not display
Check your browser settings to ensure the Veeam UI site is included in the list of "Trusted sites" (in IE, go to Tools > Internet Options > Security). Alternatively, the Automatic logon with current user name and password option should be selected for the list of "Trusted sites" (in IE, go to Tools > Internet Options > Security > Custom Level and scroll down to the User Authentication options).
Veeam UI displayed incorrectly in IE with Compatibility View enabled
Veeam UI website does not support the IE “Compatibility View” feature. To turn it off, click Tools > Compatibility View settings and clear the Display intranet sites in Compatibility View checkbox.