How Tech Support Helps You Resolve the Remote Procedure Call Failed Error in ISA Server 2004

Many users have reported the remote procedure call failed error in ISA Server 2004. There might be several causes behind the issue. It is an error related to Remote Procedure Call (RPC) that can make your PC malfunction and create troubles while connecting to a particular network. Before we discuss the symptoms of the error, let us first know little more about RPC. 

RPC is a PC communication protocol that a program uses to place a service request from a program on another computer in a network. The protocol doesn’t need to understand network details. A procedure call is also known as a function call or subordinate call. RPC works on a client/server model.

The program that sends the request is a client and the one that provides the service is the server. RPC is a synchronous operation that keeps the requesting program suspended until the results of the remote procedure are received. 

Let us now understand the symptoms of the remote procedure call failed: 

Symptoms 

Once the error takes place on your PC, the RPC route publishing may not be allowed by a computer running on Microsoft Internet Security and Acceleration (ISA) Server 2004. At the same time, users may receive the following error message:

The remote procedure call failed.

Causes of the Error 

You face the issue when more than one communication protocol definition gets selected for the same RPC server in ISA Server 2004. It also takes place if you are using Microsoft Forefront Threat Management Gateway, Medium Business Edition or Windows Essential Business Server 2008. You may find the following scenarios if the RPC traffic in ISA Server gets divided between different RPC protocols definitions.

The Firewall tries to take all RPC traffic to match the original RPC protocol.

The Firewall denies the traffic that matches other protocol definitions. 

How Tech Support Helps?

In the modern era of advanced technology, getting computer solutions is no more a difficult task. You get plenty of online tech support services that can help you troubleshoot computer errors in a very convenient manner. Plenty of good tech support service providers are operating online to provide you quick computer solutions. You simply require going online, do a bit of research, and find a reliable tech support service and then call at the provided number. You can call them anytime during day and night as they are operational 24x7. The moment you call them, you get connected to an expert computer technician who will listen to your problem and then diagnose the system. Once the diagnosis is over, the computer technician will suggest you the troubleshooting plan, and after obtaining your consent, he will fix the error within the minimum possible time. The entire process of availing quick computer solutions is quite simple, user-friendly and convenient. 

How to Resolve the Error?

The first thing that you need to resolve the issue is to create only one protocol definition for each of the published servers. For example, if you want to publish an RPC server in route scenario, then you need to create a specific protocol definition comprising of all the interfaces on the server. Follow the below-given steps to perform the action. 

•    First of all, click Start then navigate to the following:

Programs >> Microsoft ISA Server >> ISA Server Management.

•    Now, click Firewall Policy in the left pane.

•    Move towards the right pane, and click the 'Toolbox' tab. Now expand Protocols.

•    Under Protocols, you need to click 'New' and then click RPC Protocol.

•    Type RPC Server, once you reach the New Protocol Definition Wizard page, then type Server and then click Next.

•    On the Select Server page, you need to type the name of the RPC server in the Server Name box area and then click Next.

•    Now click to select the check boxes for all the interfaces belonging to the published RPC server present on the Server Interfaces page.

•    Now click Next and then Finish.

•    Go to the middle pane, and click Apply to save the changes and update the Firewall policy.

Hopefully, it will resolve the issue, and you may connect to the network without any hindrance. 

Conclusion

Windows errors are common, and every user comes across such issues now and then. But the most important thing is that you should get it fixed soon to prevent further damages to the PC and its components. Don’t bother even if you don’t know how to deal with such critical errors, simply go online find a reliable tech support service and get connected to a computer technician through the Internet. So, next time when you see the error on your screen either use the tips mentioned above or choose a professional computer repair service.