RES 3700 - Error: Timeout while sending message, check fo server, ifc or cables.


This error is received when Micros point of sale is interfaced with another application. Most common application that micros interfaces with would be the Opera Property Management System. This application is used for managing the Hotel side of things.

Below are a list of things that you need to check in order to resolve this issue.

Step 1) Make sure the Micros Interface service is running. This can be in two locations depending on the version of RES 3700 installed.

Version 3700 3.2 and below
In 3.2 and below the interface service is located in the Micros Control panel. Open the control panel "Start -> Programs -> Micros Applications -> Micros Control Panel" and make sure there is a green tick beside the interface service.

Version 4.0 and above
In 4.0 and above all micros services except the "SQL Database Service" were moved from the Micros Control Panel to the windows services list. This services list can be accessed by typing Services.msc into the run prompt. Make sure the "Micros Interface Service" is started.

Step 2) Make sure the interface is running. The interface is generally located on another server/pc which is not the Micros server. This program acts as the middle man between Micros and the end product for example Opera PMS.

Step 3) Once you have confirmed that Step 1 and Step 2 are ok the next thing is making sure there is network communication between Micros and the Interface pc. Im not going to get into COM connections and am only going to focus on TCPIP connections.

Open the "Pos Configurator -> Devices -> Interfaces"  and select the interface which you are having trouble with. Select the interface tab on the right and you will see an ip address and port number. Make a note of these.

Open a command prompt and type in "Ping x.x.x.x" where x.x.x.x is the ip address without the quotes and press enter. If you get a reply then the network connection is active.

Next is to test the port number. Open a command prompt and type "telnet x.x.x.x yyyy" where x.x.x.x is the ip address and yyyy is the port number and press enter. If the command prompt goes blank with the blinking cursor in the top left then everything is ok and working, if it does not connect then there is a problem with the port. Consult the supplier of the interface for more info.

Step 4) If step 3 is successful then the problem is going to be with the end product eg Opera or with the connection between the Interface pc and the Opera server.


  1. I read your blog on daily basis. epos This is really great and informative post. Thanks for sharing.

  2. thanks for sharing , very helping .

  3. Hola, tengo un problema con ese error en una version 6.0 he intentado con el services.msc pero no funciona.




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