I encounter this error from version to version. And you have to reinstall the cluster each time anew. Addressed to the support, thay said that the bug in my environment, in the Active Directory settings.
During the installation/ UPGRADE/deinstall process, if you choose server credentials show error "Validation Failed"
The user has local administrator rights on the system. An attempt to enter a different user results in the same error.
Enabled service "Computer browsing", manually enable netbios in setting TCP/IP v4.
but when i try upgrade my sense 2.0.3 to 2.1.1 I see a error "Validation failed".
Try user domain/username or username@domain - no difference
i find workaround but only for new installation.
check option "enter user information for starting the services" - enter user credentials try next. Have a error. uncheck option - next. After installation go to services and here we see - Services run as my domain user.
I hit the "Service User Validation Failed" when installing with a client today. Surprisingly, we needed to log in as the service account to do the install and then it went through fine.
The Qlik help mentions elevating your Service Account for the install (e.g. giving RDP rights) and then knocking it back down again afterwards.
I spotted this in September 2017 IR. Hopefully this will be fixed in future versions.