When i try to run a asp.net web service under IIS (windows 8.1 IIS 8.5) I get an exception.

This is a third party exception and I think that it is related to a security issue.

It is possible that it is related to the IIS configuration.

Any assistance will be appreciated.

Thanks

An exception can have all kinds of root causes.

In IIS exceptions are often thrown due to programming errors, missing binaries, wrong configuration...

I would recommend posting back on iis.net forums (dedicated to IIS support) with more details like the complete error code and why you think it is a 'third party exception'