ASPForums.Net RSS Feedhttp://www.aspforums.net/Handlers/RSS.ashxLatest additions to the content that appears on ASPForums.Net(c) 2019 www.aspforums.com. All rights reserved.RDLC Report Error: ReportViewer is ambiguous in the namespace Microsoft.Reporting.WebForms<p>Hi <a class="username" rel="maideen">maideen</a>,</p> <p>1. This happens mostly when you add the same reference twice. Can you ploease confirm the references you added are not repeated.</p> <p>2. Go to your Web.Config file and check the <span style="text-decoration: underline;">&lt;assemblies&gt;</span> you may find two assemblies with the same PublicKeyToken but different Version. If found remove one that does not match with the Version Register in the page.</p> <p>Ex:</p> <pre class="brush: xml">&lt;assemblies&gt; &nbsp; &lt;add assembly=&#34;Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A&#34;/&gt; &nbsp; &lt;add assembly=&#34;Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A&#34;/&gt; &lt;/assemblies&gt;</pre> <p>&nbsp;</p>https://www.aspforums.net:443/Threads/906729/RDLC-Report-Error-ReportViewer-is-ambiguous-in-the-namespace-MicrosoftReportingWebForms/https://www.aspforums.net:443/Threads/906729/RDLC-Report-Error-ReportViewer-is-ambiguous-in-the-namespace-MicrosoftReportingWebForms/Wed, 24 Oct 2018 00:07:27 GMT