We’ll also look at what to do if you downloaded one by accident.
What Is an ASMX File?
An abbreviation forActive Server Method File, a file with the ASMXfile extensionis an ASP.NET web service file.
Be careful to not confuse ASMX andASCXfiles.
While they might appear similar, they’re used for different reasons.
ASMX files aren’t intended to be viewed or opened by the internet tool.
Try renaming the file to the correct extension as a short term fix.
Here’s some information on migrating ASP.NET web servicesto the Windows Communication Foundation (WCF) platform.
This is useful if you should probably use .NET 2.0 services under .NET 3.0.
Seethis Stack Overflow threadfor more on how that works.
Still Can’t Open It?
This can happen if you’ve misread the file extension.
Some files use a similar extension even though the formats are entirely different.
Or maybe you have anASPfile that only works with an Adobe program.
SMX is similar; one use for this file is as aSourceModplug-in.
