Technical Tutorials on MS Dynamics Axapta 2012,D365 FnO

Problem I am Getting below Errors on AIF Web service enabling for custom class in Ax 2012. 1. Application pool 'MicrosoftDynamicsAXAif60' is being automatically disabled due to a series of failures in the process(es) serving that application pool. 2. There was an error during processing of the managed application service auto-start for configuration path: 'MACHINE/WEBROOT/APPHOST/Default Web Site/MicrosoftDynamicsAXAif60'. The error message returned is: 'An initialization error occurred while trying to preload an application. Exception: System.Configuration.ConfigurationErrorsException Message: Duplicate type with name 'Dynamics.Ax.Application.NewItem' in assembly 'Dynamics.Ax.Application, Version=6.3.1000.309, Culture=neutral, PublicKeyToken=null'. StackTrace:    at System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective)    at System.Web.Configuration.CompilationSection.LoadAllAssembl

I am Getting Error during Full CIL in Ax 2012 R3 CU11 version. " The SysWorkflowDictElement.getAttribute() reflection API could not create and return the AifCollectionTypeAttribute object. Please check the parameters." No any single report executing and giving parameter related error then tried to do full CIL then above error coming. Solution: Solution of this issue is as below. 1. first, compile the class mentioned in the error message and see if this solves the problem if not then use compile forward option. 2.Then use incremental compile option if again other class error coming then compile again till incremental compile issue not resolved. 3. Once incremental compile did then do full CIL. 4. Then if the issue still exists then do steps. 1) first stop the aos services and go to the folder of the XPPIL folder and delete all files 2) start the services of aos 3) and do the incremental CIL 4)THEN  Do FULLY CIL, THEN ALL THE SERVICE WILL BE STARTE

Question :What port would you need to open on the firewall for the Application Object Server (AOS) function in Microsoft Dynamics AX 2012? Answer:You would need to open TCP Port 2712. Question:If The company runs a Microsoft Dynamics AX 2012 system.You plan integrate other applications with the Microsoft Dynamics AX 2012 system.What type of account should you use? Answer:You should use a .NET Business Connector Proxy account.