Products: Nintex Workflow 2010, Nintex Workflow 2013
"Workflow action 'Nintex.Workflow.Activities.Adapters.NWStartWorkflowAdapter' is not allowed on site".
When designing an existing workflow, containing a Start Workflow action, you may face the above error.
The cause of this issue is unknown, but we have seen the issue occur after migrations, or changes made to the allowed actions on sites.
Please press Ctrl + F5 and try to publish your workflow again. If that does not work, do the following:
Please open Central Admin > Nintex Workflow > Manage allowed actions > Search for "Start Workflow" select it, and click on Edit Permission, please ensure that the action is permitted to be used by all users.
Please also check on your site, Site Actions > Site Settings > Nintex Workflow > Manage Allowed Actions > Make sure the action "Start Workflow" is enabled. If it isn’t, please enable it.
Finally, in the problematic workflow, please remove the Start Workflow action and re-add and re-configure it.