I've a problem with a SharePoint designer workflow. The workflow creates a new task and for this an email will be sent to the task owner. Everything works fine during my tests with Administrator privileges.
Tests with users which have only Edit privileges failed with an error message (HTTP Forbidden). The Task is created but sending the mail failed and the workflow stops. The message tell me that they don't have the mandatory access rights.
Pressing redo as adminstrator sends the mail and restart the workflow.
I already tried to start the site feature 'Workflow can use app permission' and also to grant the site app permissions in appinv.aspx, unfortunately without success.
Has anybody an idea why sending mails failed for user with edit rights?