I followed all the steps to create an Automated back using the command prompt in my backup directory and I checked the Task Scheduler Library to confirm that the PI Server Backup is created. I updated the pibackuptask.bat.example script name to pibackuptask.bat as well.
I checked the my backup directory F:\Backup\Automated folder and I found that the backup file has Type as Error file. Can you please advice?
Below are the images
Command Prompt image
Task Scheduler image
Backup directory image
It would likely be easier for us to help if you could tell us what is in that error file, or post it here.