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Application tries to connect to internet

Posted on 2006-05-10
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Last Modified: 2012-05-05
Hi Experts,

My appliciation is trying to connect to the web on startup and on commands. There is no code within this project that connects to the web. I have references to excel and powerpoint.

When i open this project on another pc it does not happen, so it must be settings on this pc. When i build the project on the pc with the problem it and it is installed on another pc, it does try to connect to the web.

Is there anything that i need to take in account to avoid this problem?

Cheers,

Tom

 
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Question by:TommyTwoPints
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11 Comments
 
LVL 4

Expert Comment

by:AndyAelbrecht
ID: 16649228
Are you using Visual Studio 2005 ? If so, did you deploy this application as a ClickOnce application ?
If so, did you set this application to check for updates every time on startup/shutdown ?

This is the most common problem with VS2005 atm as far as I know.

right click on your solution (project) in the solution explorer, go to publish, click on Updates
See if you have marked "The application should check for updates" -> uncheck, recompile and your application shouldn't behave bad anymore.
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LVL 3

Author Comment

by:TommyTwoPints
ID: 16649377
I am using visual studio 2002. Checking for updates seems as though it could be the problem but in vs2002 the steps you provided are not avaliable,

This is a problem as it slows down the application when a firewall is active. If there is no connection to the internet, there is no issue.

Cheers,

Tom
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LVL 9

Expert Comment

by:sk33v3
ID: 16649684
In internet Explorer

Tools | Internet Options

Click the Connections tab and make sure that the Never Dial option is selected.
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LVL 3

Author Comment

by:TommyTwoPints
ID: 16649737
If a user is using my application on a network, that option wouldnt make a difference.

This application is sure to be used on computers that are always connected to the internet so it will try to connect whether the never dial option is selected or not.

Cheers,

Tom
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LVL 9

Expert Comment

by:sk33v3
ID: 16649760
Does Microsoft software Auto Update on your bad machine?
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LVL 3

Author Comment

by:TommyTwoPints
ID: 16649782
Its not that is displays a connection form. It is picked up by the firewall and the user is alerted that the application is trying to connect to the remote address; crl.microsoft.com (131.107.115.28 on the http port 80),

I hope this helps sort the problem,

Cheers,

Tom
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LVL 3

Author Comment

by:TommyTwoPints
ID: 16649800
I had auto updates turned off, but now i have set them to Notify me but dont download of install them,

Cheers,

Tom
0
 
LVL 3

Author Comment

by:TommyTwoPints
ID: 16649889
I found this which is a similar problem on an unknown to me bit of software;

Why does my personal firewall say Repro is trying to communicate with 131.107.103.243 (crl.microsoft.com)? Is this spyware?

Windows Media Player is embedded in Repro. Windows Media Player periodically attempts to update its "Certificate Revocation List" by contacting 131.107.103.243.

I dont have windows media player embedded in my software, but obviously certificates are being updated/checked.

One thing that confuses me is that this only happens on this pc. Also why would microsoft affect non web based applications by doing this?

Cheers,

Tom
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LVL 3

Accepted Solution

by:
TommyTwoPints earned 0 total points
ID: 16649994
I have fixed my problem...

The following steps fixed this;

1)Start Internet Explorer.
2)On the Tools menu, click Internet Options.
3)Click the Advanced tab, and then click to clear the following check boxes in the Settings list:
4)Check for publisher's certificate revocation
5)Click Apply, and then click OK.

Cheers,

Tom
0
 
LVL 3

Author Comment

by:TommyTwoPints
ID: 16650016
This means this problem could still occur on a users machine, but i now know what is causing it. I suppose it is up to the user but with most firewalls they may only recieve the alert on the first run.  
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LVL 3

Author Comment

by:TommyTwoPints
ID: 16829887
Hi Bob,

I fixed this one myself and posted the steps i took to fix it.

Because of this i am reluctant to give the points to any other participant.

Cheers,

Tom
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