I have the same problem.
We even uninstalled qlikview, removed all Folders, removed registry keys, removed IIS and installed everything from scratch.
The task just keep incrementing with “Information: Loading. LoadTime”
Setup the same scenario in a VM, uninstalled, removed folders, iis – and reinstall. And Tasks works.
If the file is manually opened on the Server with Qlikview Desktop it reloads 100% fine from Excel files or SQL Servers.
If the task is then scheduled, it never ends nor bombs out with an error – just constantly “Loading”
Can you please let me know if you resolved the issue ?