ReportViewer not loading on IE8

[Koen L]

Hello,

I created a basic sample of the Telerik ReportViewer with the following tutorial: http://www.telerik.com/help/reporting/mvc-report-viewer-extension-embedding.html

I get the sample running under Chrome/Firefox/ IE10-11.

When I try to run the sample in IE8 I get errors:

first error: JavaScript critical error at line 2329, column 22 in http://localhost:58165/ReportViewer/js/ReportViewer-8.0.14.225.js\n\nSCRIPT1010: Expected identifier

second error: Unhandled exception at line 76, column 21 in http://localhost:58165/  0x800a01b6 - JavaScript runtime error: Object doesn't support property or method 'telerik_ReportViewer'

Any ideas how to fix this?

I also added screenshots of the errors.

Regards

[Peter]

Hello Koen,

The HTML5 Report Viewer supports only HTML5 compliant browsers. This excludes IE8. For more information on the supported browsers see: HTML5 Report Viewer - System Requirements

If IE8 support is important for your project, you may consider using the Web Forms Report Viewer as shown in the Telerik Reporting in MVC? Sure. It takes 8 quick steps blog.

Regards,
Peter
Telerik

 

 

[Astin]

Hi all,

I am also getting this issue in my project as you can see as per attached. But I am using IE10 browser and not sure why this issue is happening.
Can you please give us an idea about the same?

Regards

Vrajesh 

[Stef]

Hello Vrajesh,

Please use Fiddler to check the actually failed requests and the reason for the failure. In the raw response you can see the exception and the stack trace as well.
In addition, test to upgrade to the latest available Telerik Reporting version - Q1 2014 SP1 v8.0.14.507.

If you need further help, please share the log file created by Fiddler.

Regards,
Stef
Telerik

 

 

[Trent Ballew]

I am getting this same error even when I'm using the WebForms control (the way the HTML5 viewer displays parameters is just unacceptable).  The error is 
    SCRIPT1010: "Expected Identifier"
    File: telerikReportViewer-8.1.14.618.js, Line: 2436, Column: 22

This only happens when I am using the following META tag in my page heading
    <META http-equiv=X-UA-Compatible content=IE=8>
When this tag is used, not even the IE10 Document mode (IE 11 Developer tools) will work correctly, only Edge will work.

If I use IE=Edge in my meta tag, the control works.  However, due to other restrictions on my site, I am required to use the IE=8 tag. 

I've seen other sites in my company using version 7.2.14.127 of the WebForms viewer with no problems on IE 8.  Has the IE 8 restriction also been added to the WebForms viewer in recent releases?

[Stef]

Hi Trent,

Apologies for the misunderstanding.

The HTML5 Report Viewer requires HTML5 support by browsers, which means IE9+. The full list of supported browsers is available in the Browser Support article, and details about the product system requirements are listed on the System Requirements page.

If you need to display reports in IE8 (not officially supported in newer versions), you can use the old web viewer - ASP.NET ReportViewer in Web Applications as in the Telerik Reporting in MVC? Sure. It takes 8 quick steps blog post. The HTML rendering is considered with the new standards of HTML5, but there are fallback mechanisms to display the content properly in older browsers.

Regards,
Stef
Telerik