Hello! I apologize for the delayed response. To solve the error with MQ you need to add the following line to Solution1.ApplicationServer.ApplicationServerService.OnStart and Solution1.Win.Program.Main WcfDataServerHelper.AddKnownType (typeof (Xafari.DC.XPWeakReferenceStruct)); We do not have examples with a middle tier solution. But I think your installation is possible. But this question requires research, we are not sure that all the functionality will work. Since Xafari has not been tested for this use We also have an example where Xafari Server runs as a Windows service. Is this problem still relevant for you? What difficulties did you encounter while setting up Security? Xafari Client Services is dedicated for helping Xafari customers only. If you have purchased Xafari subscription please identify yourself. You can buy Xafari subscription at the page Buy Xafari Framework Subscription If you have questions about purchasing please contact us via info@galaktika-soft.com Feel free to contact us if you have any questions. Regards, Mariya On behalf of Xafari Client Services Team |