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balumohan

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This webpage cannot be displayed

May 25, 2012 11:27 PM

Tags: #display #this #cannot #webpage

Hi,

I am working in a coldfusion application which is hosted in 2 windows servers with IIS versions 6.0 and 7.5. The problem is that nowadays the users are getting the IE error page 'Internet Explorer cannot display this webpage'. This issue is not bounded to a single page. Users are getting this issue in different pages when they click links or click the submit button. And this issue is replicated in two different servers. I thought of being this as a cache issue and tried with the nocache. But it didnt work. I am clueless about this now. Please help me out. Thanks.

3180 Views 22 Replies Latest reply: balumohan, Jul 5, 2012 7:11 AM

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1. Adam Cameron.,

May 26, 2012 12:53 AM in reply to balumohan

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"This webpage cannot be displayed" is just a generic user-friendly error page IE displays when it receives a 500 response from the web server.

There's a setting to switch it off and show the actual error, which'll help you diagnose where you code is going wrong.

--
Adam

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2. balumohan,

May 26, 2012 7:25 AM in reply to Adam Cameron.

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Adam,

Thanks for the reply. I tried it. But it was not showing any error by that. And this 500 response is not coming always. And if it comes, the next second when we refresh the page, it will load without an error. So is it showing that the application is not having any error?

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3. Adam Cameron.,

May 28, 2012 4:49 AM in reply to balumohan

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Stick an onError() handler in your Application.cfc and log whatever the error detail is, then rethrow the error.

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Adam

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4. balumohan,

Jun 6, 2012 7:29 AM in reply to Adam Cameron.

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Hi Adam,

I tried with the onError also. I was not able to register the error. I built a small cfm file which is just taking a single row of data from db and displaying. And I made this page to refresh @ an interval of 3 minutes. I was able to regenerate the issue about 9 times within 4 hours. But the cause of the issue is unknown. Along with this I made a html page which showed this issue for about 2 times within this 4 hour. So I am totally confused about this.

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5. Adam Cameron.,

Jun 7, 2012 12:53 AM in reply to balumohan

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If it's occuring with a HTML file, then CF is playing no part in it, so I'd focus on looking at the network between the clients and the web server, and indeed the web server itself.

Perhaps perform your test from a browser on the web server itself (using localhost as the domain name, so as to stay off the network), and see if you still get the error. If you do, it's something with IIS. If not, it points to your network.

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Adam

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6. BKBK,

Jun 7, 2012 1:09 AM in reply to Adam Cameron.

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Adam Cameron. wrote:

If it's occuring with a HTML file,...
Since it is apparently browser-related, I thought immediately of HTML. How does the HTML code look like?

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7. balumohan,

Jul 3, 2012 8:44 PM in reply to BKBK

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Still I am having the issue. I did what all I could do . Thought of updating here what all I did. I created one test html and 1 test cfm page and I kept them in the same folder in which the application resides. These pages will refresh by itself in every 3 minutes. The html page is just displaying a message and the cfm file is just picking up the first record from a table and displaying it. Now for both this html as well as cfm pages, we got this same issue. I need to confirm about one thing here. When we run this html page, will it go to the coldfusion application server? If it is going to the server, then the cf application server may have the issue. If it is not going to the application server, it is something related to IIS or server? Ok.. Now I thought of moving my application to another server and I put this test pages in that to confirm whether this issue is not there. But I found this issue there too. Not in that frequency that I used to get in the other server. I then tried with different IIS settings in these servers which also didnt solve my issue.

So is this any problem with the coldfusion installation?
Anything related to IIS or server?
When we run an html page which is kept in the same folder of our coldfusion application, will it hit coldfusion application server?

Is there anything that I am missing.. Please help!!! Thanks..

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8. itisdesign,

Jul 3, 2012 11:31 PM in reply to balumohan

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balumohan wrote:

When we run an html page which is kept in the same folder of our coldfusion application, will it hit coldfusion application server?
Hi balumohan,

Like Adam said, no, an html page request will not hit the CF Application server, even if the html page is kept in the same folder as your CF application.

Thanks,
-Aaron

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9. balumohan,

Jul 3, 2012 11:47 PM in reply to itisdesign

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Ok. Thanks Aaron... Out of these what I have mentioned above... What can be the reason of the issue? Do you feel anything that I should try? Thanks..

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10. itisdesign,

Jul 4, 2012 12:48 AM in reply to balumohan

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balumohan wrote:

Ok. Thanks Aaron... Out of these what I have mentioned above... What can be the reason of the issue? Do you feel anything that I should try? Thanks..

Hi balumohan,

Basically I'd do exactly as Adam suggested. Load the .html page via http://localhost/.... (load the page locally on the server itself). You might also watch the site's IIS log to see if the request was logged and if it was logged as an error, when the issue occurs.

Thanks,
-Aaron

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11. BKBK,

Jul 4, 2012 3:16 AM in reply to balumohan

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What's the ColdFusion version/build?

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12. balumohan,

Jul 4, 2012 3:47 AM in reply to BKBK

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Below are my system details:

Windows server 2003 r2 :: 64 bit service pack 2
IIS 6.0
coldfusion :: 9,0,0,251028
Adobe Driver Version 4.0 (Build 0005)

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13. BKBK,

Jul 4, 2012 4:13 AM in reply to balumohan

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Now, on to something else. Since the problem occurs when your users "click links or click the submit button" it could be an encoding issue. Does it help when you place the following two lines at the beginning of onRequestStart (in Application.cfc)?

<cfscript>
setEncoding("url", "UTF-8");
setEncoding("form", "UTF-8");
</cfscript>

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14. BKBK,

Jul 4, 2012 4:21 AM in reply to balumohan

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balumohan wrote:

Below are my system details:

Windows server 2003 r2 :: 64 bit service pack 2
IIS 6.0
coldfusion :: 9,0,0,251028
Adobe Driver Version 4.0 (Build 0005)
You should be thinking of updating. ColdFusion 9 is now at:

1) update 1 (9.0.1) and Cumulative Hot Fix 2;
2) update 2 (9.0.2): [Note from the official documentation: "This Updater release is a follow-up of ColdFusion 9 Update 1 release. However, note that, unlike ColdFusion 9.0 Update 1, ColdFusion 9.0 Update 2 is a full installer. Hence, do not install ColdFusion 9.0.2 alongside an existing ColdFusion 9.0 or ColdFusion 9.0.1 installation.

ColdFusion 9.0.2 update is a summation of ColdFusion 9.0.1, ColdFusion 9.0.1 Cumulative HotFixes 1 & 2, all ColdFusion 9.0.1 Security HotFixes, but without Verity."]

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15. balumohan,

Jul 4, 2012 5:07 AM in reply to BKBK

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I kept one page which is taking one record of data from db and I just dumped it to the same page. This page refreshes by itself in every 3 minutes for me to check the issue. But here also I got the issue. And also I kept one html file also. There also the issue occured.

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16. BKBK,

Jul 4, 2012 5:31 AM in reply to balumohan

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If the cause is an encoding issue on the web server, then it might affect CFM pages as well.

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17. balumohan,

Jul 4, 2012 6:35 AM in reply to BKBK

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But in html file I didnt mention anything about page encoding

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18. balumohan,

Jul 4, 2012 9:06 AM in reply to itisdesign

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I checked with the html file accessed through localhost as well as through the actual site. I found the issue while accessing through the actual site. In localhost I didnt get the issue.

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19. BKBK,

Jul 5, 2012 2:47 AM in reply to balumohan

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balumohan wrote:

I checked with the html file accessed through localhost as well as through the actual site. I found the issue while accessing through the actual site. In localhost I didnt get the issue.
Do the site and localhost run the same web server software?

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20. balumohan,

Jul 5, 2012 4:39 AM in reply to BKBK

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Yes. the site and the localhost are in the same web server. I am thinking like it is a server issue?

But the problem is that I have this issue in another server also. So both these servers are having the issue?

But as the test page is HTML, it is not coldfusion related??

A 3rd server which is not having coldfusion installed is not showing this issue.

CONFUSED!!!!

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21. BKBK,

Jul 5, 2012 6:53 AM in reply to balumohan

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balumohan wrote:

But as the test page is HTML, it is not coldfusion related??

A 3rd server which is not having coldfusion installed is not showing this issue.
We can already get this question out of the way. The browser's HTML request does not reach ColdFusion. It is served directly by the web server. How does your typical HTML code look like?

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22. balumohan,

Jul 5, 2012 7:11 AM in reply to BKBK

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This is the test html page that I have written. I made it refresh every 120 seconds..

<html>

<head>
<meta http-equiv="refresh" content="120" />
</head>
<body>
<h1>this is to tester</h1><br>
<a href="tester.html">TEST in web folder:: click me</a></body>
</html>

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