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Telerik Control Panel States "No Internet Connection"

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Doug
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Doug asked on 29 Oct 2012, 02:24 PM
I posted this here because I was unsure where this would go.

On a number of occasions recently (today being one of them), we will be running the control panel and the control panel will state "No Internet Connection".  We work around this by just downloading the msi files, but that is much more time-consuming and full of making mistakes.

This can happen on one developer machine and not another (equal builds....equivalent firewall and antivirus....our dev machines are controlled by a network imaging process).

So, we're a bit at a loss.  I and my other colleague have machines that are, for all intensive purposes, equal.  We have done the normal things of disabling antivirus, disabling firewall, closing out all notable programs, etc.  The thing is this doesn't happen on a consistent basis.  It will happen on one deployment server and not another.  Then, at another time, it will not happen on the previously affected server, and will happen on the previously unaffected server.

What we're looking for is some guidance as to how we can troubleshoot the problem.

Regards,
Doug

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Chavdar Dimitrov
Telerik team
answered on 01 Nov 2012, 02:24 PM
Hello Doug,

Thank you for reporting this.

The applications relies on the operations system's API for its internet connectivity check and it seems that this does not work as expected. We have received a few reports stating that the internet connectivity detection does not work fine in some cases and we are working on improving this. Unfortunately, this is very hard to reproduce issue because it happens under unclear circumstances and is very rare. However, we will do our best to improve this for our next release.

Please, do not hesitate to share any further feedback about the tool.

Kind regards,
Chavdar,
the Telerik team

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Doug
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answered on 01 Nov 2012, 02:29 PM
Thanks for this response.

Why even check for internet connectivity?  If the OS API is flaky about telling you whether or not it's connected to the internet (even in intermittent terms), then why ask the API at all?  Why not just try to start the download (I'm assuming some sort of HttpWebRequest or the like), and, if you get an error response (or no response at all after a predetermined timeout), then assume you're not connected.  It would seem relying on the OS to tell you it's connected before even attempting the download is an extra point of failure and is accidentally creating this gremlin.

Just a thought.

Thanks!
Doug
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Chavdar Dimitrov
Telerik team
answered on 05 Nov 2012, 08:16 AM
Hi Doug,

Thank you for sharing your thoughts.

We are planning to rework this completely and we will take your suggestion under consideration. We have some more variants too. However, our main goal is to remove the dependency on the OS API which does not work properly every time, so we will have a discussion to find the best way to do this.

Best regards,
Chavdar,
the Telerik team

Explore the entire Telerik portfolio by downloading Telerik DevCraft Ultimate.

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Canton
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answered on 08 Aug 2017, 01:31 PM
I am having this problem as well. I have tried everything I could think of on my end to fix this issue. I even tried uninstalling the control panel, then re-downloaded it. Now when trying to reinstall my new download - it will not complete the install because I still get the 'No Internet Connection Found' message. Please tell me how this can be resolved. I figured I should not be having this issue if it was supposed to be fixed in newer releases which I have. 
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Nikolay Mishev
Telerik team
answered on 10 Aug 2017, 12:57 PM
Hello,

Thank you for contacting us.

In this case I would suggest you turn the Detect Automatic Settings option off which help some of our customers to solve this issue. Here are the steps that need to be performed in order to do that:
  1. Open your system's Control Panel
  2. Click on the Network and Internet category
  3. Open the Internet Options category
  4. Select the Connections tab
  5. Click on the LAN settings button
  6. Uncheck the Automatically detect settings check box
  7. Confirm your changes 
Please let us know in case any further assistance is needed.

Regards, Nikolay Mishev
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Chavdar Dimitrov
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Doug
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Canton
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Nikolay Mishev
Telerik team
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