Hi @Michel AL HAYEK,
Please have a try to below troubleshooting Steps:
- Check Network connections. (Dont miss this step is very important , Even Some Scenarios it looks working while you can save workflows and Worflow Manager Service looks connected but this issue can happen).
SharePoint Servers (WFEs) must able to reach Workflow Manager web site.
And also it is a requirement that from Worflow Manager Machine (if it is a different machine) must able to browse the site url which you use to register-spworkflowservice.
Ping both machines that have IP communication and also check proxies. - If workflow manager is hosted on a different machine check IIS configuration that you have Windows Authentication is enabled.
- Try re-register workflow service by scopename;
Register-SPWorkflowService -SPSite http://mywebsite -WorkflowHostUri https://workflowhost -AllowOAuthHttp -scopename “SharePoint” -Force
- If it doesnt work ; unregister the Workflow manager from the sharepoint farm
Get-SPWorkflowServiceApplicationProxy | Remove-SPServiceApplicationProxy
and run
Register-SPWorkflowService -SPSite http://mywebsite’ -WorkflowHostUri https://workflowhost’ -AllowOAuthHttp -scopename “SharePoint” -Force
this will recreate the SPWorkflowServiceApplication Proxy. Note: Don't Forget make an iisreset after use “Register-SPWorkflowService”.
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