Hi all years ago I wrote an application with LabVIEW 7.1 and turned it into an Windows NT Service according to this NI-tutorial. Now I have a similar use case and I wanted to do the same thing with an application built in LabVIEW 2010. Somehow it doesn't work and I've always get the error 62. I've built a simple demo app once with LV7.1 and once with LV2010. I was able to use the service when built with LV7.1 but not the LV2010 version (on the client side I've always used LV2010). So there is no problem with connecting to the server or using the port. I'd rather not rebuilt the app with LV7.1 because it's not really small. I would only consider this if there is no workaround to this problem. Anybody any ideas?? I really appreciate anybody's help Cheers, Christian

Just as information for the one running into the same problems: sc.exe did the trick BUT not as described in this Tutorial. You need to create a wrapper service like described on this Homepage. Services created with sc.exe need a BeginService() and an EndService() method otherwise it won't let you install it. This picture shows you how I did it. The CIN loads AnyService.dll which itself loads server.dll. Kudos to Kuan Chen Cheers, \c