1 I solved the same problem with increasing cache limit of iis root entry. you can also disable caching. Hope it helps.
1 Hi Pavan,
Since it is a third party webservice so may be the reason for this exception is that your response time is a little lesser than time required by the webservice method to complete. So try to increase the timeout in your app.config.
Please refer to these links
https://stackoverflow.com/questions/9117628/error-consuming-web-service-an-existing-connection-was-forcibly-closed
https://www.outsystems.com/forums/discussion/15641/tip-the-underlying-connection-was-closed-an-unexpected-error-occurred-on-a-rece/
Hope this helps
0 I am consumming it Dynamically without adding service refrence.
is there any credentials issue.