Can't create or delete scheduled refresh

Hi Katebrk ,

Please try to change the service account from "Virtual Service Account" to "Domain account".

To schedule refresh a report, the execution account must have "system user" permissions. Please make sure the powerbi server cog->settings->site settings->security is giving access to that user

And please also check if the user you used to connected to sql database have permission to create agent job. 

Here is some simliar post:  https://community.powerbi.com/t5/Report-Server/Power-Bi-report-server-was-unable-to-create-a-scheduled-refresh/m-p/1462144

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Best Regards,

Dedmon Dai