Question / Problem:
When attempting to install a brand new installation of KTA 7.8 express feature which uses the new option to install bundled SQL Express, the following error is encountered:
Answer / Solution:
This issue is caused because KTA is installing SQL Express and overriding the default MSA account with the KTA service account. This software defect has been submitted under:
Bug 1543022:SQL express install failing for KTA Express install failing. This issue will be resolved in KTA 7.9 (ETA Q2 2021).
The workaround would be to install SQL Express manually and process with express installation.