In my company, we have a web service which is used by a windows service from our clients to upload some information. Recently, after we installed TMG on our company, we started to receive the following error on TMG when any of our clients try to connect:
If I try to access the page from outside our network is opens without any problems. The issue seems to be when posting data. I have tried all execption rules and still not working. Without TMG is works perfectly.
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