Hi Miki,
are you sure that 5555 is your HTTPS-Port?
Usually this is the default HTTP-Port unless another Port is specified.
Please share an Overview of your Ports-Page as well as Certificates-Page from IS-Admin.
What type of ACL is assigned to this WebService? Is this a specific ACL for this partner or is this a build-in ACL?
Please share the ACL settings page for the WebService from Designer.
Where are the associated Users stored? In IS or MWS (aka Central User Management)?
Does restarting the IS without modifying the ACLs help?
Regards,
Holger
#API-Management#soa#webMethods