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qvp port 4747 never disconnected

Hello, guys

Shortly, I have a very strange problem which is called 10 times acccess error.

This error shows up when I open a qvw file on the accesspoint.

While the qvw file is being open , press refresh button or f5 key in ie.

Then I get this error message "qvp://olap.iprovest.com/test1.qvw?iie_authenticate= ....       

/script/QVSTunnel.dll ..... could not be opened"

So, I come to check out netstat if there is something wrong with network.

When I type in netstat on console command, there are 9 qvp connections (4747 port) on netstat result.

And I check out Qlikview server and there are 9 qvp connections (4747 port) as well.

I think that qvp connection should be disconnected when I refresh ie.

Do you have any idea why this thing happens?

Thanks

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