I needed to change the vcdb.properties file to get the SPS Service clean:
In %programdata%\VMware\VMware VirtualCenter\vcdb.properties
Append ";integratedSecurity\=true" to the url-line:
Before:
url=jdbc:sql…….databaseName\=VCDB
After
url=jdbc:sql…….databaseName\=VCDB;integratedSecurity\=true