Can you ensure that the correct (new) service account and credentials are set in the following data connections (QMC > Data Connections):
Out of the box, the credentials are cached in these locations:
- Windows Services Applet (services.msc)
- The above data connections
Outside of the default usage, the only sections where you can configure a username and password inside of Qlik Sense are:
- Data Connections
- User Directory Connectors
Every other usage either depends on the previously listed locations (e.g. using the credentials cached on the Windows side for the Engine service to access a UNC path) or configured outside of Qlik (e.g. DSNs in Windows).