Reserved.ReportViewerWebControl.axd 404 错误的解决办法-优快云博客

本文介绍了解决ReportViewerWebControl.axd资源404错误的方法。该问题出现在从开发环境部署到测试环境后，通过配置IIS7中的HandlerMappings及修改web.config文件中的handlers设置可以解决此问题。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

来源：http://ericphan.info/development/reserved-reportviewerwebcontrol-axd-not-found/

Ran into this issue the other day at work. We were developing some reporting services reports for a client and viewing them through a report viewer control in the intranet site we were developing.

The reports ran fine in the development environment but as soon as it was published to testing the reports behaved strangely. The test box was a Windows 2008 Server Standard Edition with IIS installed and .NET 3.5 SP1.

The reports page was reporting a 404 on the following resource "Reserved.ReportViewerWebControl.axd"

This handler was definitely present in the web.config file:

view plain copy to clipboard print ?

<add path="Reserved.ReportViewerWebControl.axd" verb="*" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" validate="false" />

I did the following to resolve this issue.

Install Report Viewer 2008 Redist + SP1
In IIS 7 | Handler Mappings

Under Actions | Add Managed Handler...
1. Request path: Reserved.ReportViewerWebControl.axd
2. Type: Microsoft.Reporting.Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
3. Name: Reserved-ReportViewerWebControl-axd
Click OK