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"This is an invalid webresource request" Exception!

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Eric asked on 24 Jun 2010, 02:19 PM

Hi,

Since I upgraded my solution to ASP.NET 4 (webforms) and to Telerik RadControls 2010.1.519.40, I keep getting the following exception every time there is a new request to the server:

    
            Exception ID:   0 
        
            From:   System.Web 
        
            Time of Error:  6/23/2010 6:42:06 PM 
        
            Exception Type: System.Web.HttpException 
        
            Exception Message:  This is an invalid webresource request. 
        
            Exception Source:   System.Web 
        
            Source: Path :/WebResource.axd - Raw Url :/WebResource.axd?d=ajTmsUGo059i8jVyULN6WJxyGEzDWeYyk5iXrJ-hlCbfDyKpxWCzGgr__HcHehjE45vAS9-jMMZQxEhj5WlSgsmmlvC8804M8q7f1ZWxcrM4ODuYtuHJilKNWiCjODeP0&t=634129147086009932 
        
            Stack Trace:       at System.Web.Handlers.AssemblyResourceLoader.System.Web.IHttpHandler.ProcessRequest(HttpContext context) 
        
               at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() 
        
               at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

And here is how my web.config looks like just in case it can help:

    
            <?xml version="1.0"?> 
        
            <configuration> 
        
              <appSettings> 
        
                <add key="Telerik.ScriptManager.TelerikCdn" value="Enabled" /> 
        
                <add key="Telerik.StyleSheetManager.TelerikCdn" value="Enabled" /> 
        
              </appSettings> 
        
              <system.web> 
        
                <compilation debug="true" targetFramework="4.0" /> 
        
                <customErrors mode="Off" /> 
        
                <sessionState compressionEnabled="true"></sessionState> 
        
                <httpRuntime maxRequestLength="2097151" /> 
        
                <pages maintainScrollPositionOnPostBack="true" controlRenderingCompatibilityVersion="4.0" clientIDMode="AutoID"> 
        
                </pages> 
        
                <httpHandlers> 
        
                  <add path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" validate="false" /> 
        
                  <add path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" validate="false" /> 
        
                  <add path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" validate="false" /> 
        
                  <add path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" validate="false" /> 
        
                  <add path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" validate="false" /> 
        
                </httpHandlers> 
        
                <httpModules> 
        
                  <add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule" /> 
        
                  <add name="RadCompression" type="Telerik.Web.UI.RadCompression" /> 
        
                </httpModules> 
        
              </system.web> 
        
              <system.webServer> 
        
                <modules runAllManagedModulesForAllRequests="true"> 
        
                  <remove name="RadUploadModule" /> 
        
                  <remove name="RadCompression" /> 
        
                  <add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule" preCondition="integratedMode" /> 
        
                  <add name="RadCompression" type="Telerik.Web.UI.RadCompression" preCondition="integratedMode" /> 
        
                </modules> 
        
                <validation validateIntegratedModeConfiguration="false" /> 
        
                <handlers> 
        
                  <remove name="ChartImage_axd" /> 
        
                  <remove name="Telerik_Web_UI_SpellCheckHandler_axd" /> 
        
                  <remove name="Telerik_Web_UI_DialogHandler_aspx" /> 
        
                  <remove name="Telerik_RadUploadProgressHandler_ashx" /> 
        
                  <remove name="Telerik_Web_UI_WebResource_axd" /> 
        
                  <add name="ChartImage_axd" path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" preCondition="integratedMode" /> 
        
                  <add name="Telerik_Web_UI_SpellCheckHandler_axd" path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" preCondition="integratedMode" /> 
        
                  <add name="Telerik_Web_UI_DialogHandler_aspx" path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" preCondition="integratedMode" /> 
        
                  <add name="Telerik_RadUploadProgressHandler_ashx" path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" preCondition="integratedMode" /> 
        
                  <add name="Telerik_Web_UI_WebResource_axd" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" preCondition="integratedMode" /> 
        
                </handlers> 
        
                <security> 
        
                  <requestFiltering> 
        
                    <requestLimits maxAllowedContentLength="2147482624" /> 
        
                  </requestFiltering> 
        
                </security> 
        
              </system.webServer> 
        
            </configuration>

Is anyone experiencing the same problem? Any help will be greatly appreciated!

Eric

50 Answers, 1 is accepted

answered on 22 Dec 2010, 11:13 PM

I have been chasing this ghost for months now... my errors look like this:
---------------------------------------
This is an invalid webresource request. at http://intranet/WebResource.axd?d=bjUPUSWQ4JmcTyMVIrIh1jGscEgqGVqj2ae3m6JJeXHOzWM7YlRfJNuJyAr_tLuAdTFEoVQUb-s73bm8hsuCnocmP40cdgrA_R6HS2gLIjY1&t=633716706420000000

System.Web.HttpException: This is an invalid webresource request. at System.Web.Handlers.AssemblyResourceLoader.System.Web.IHttpHandler.ProcessRequest(HttpContext context) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)Generated by: domain\username

http://intranet/WebResource.axd?d=bjUPUSWQ4JmcTyMVIrIh1jGscEgqGVqj2ae3m6JJeXHOzWM7YlRfJNuJyAr_tLuAdTFEoVQUb-s73bm8hsuCnocmP40cdgrA_R6HS2gLIjY1&t=633716706420000000
Referring Page: http://intranet/default.aspx
--------------------------------------
I have tried:
recompile
redeploy
set machine keys
added to the web.config
<httpHandlers>
<add verb="GET" path="WebResource.axd" type="System.Web.Handlers.AssemblyResourceLoader" validate="true" />

I found this site but couldn't get the page to give me anything
http://blogs.telerik.com/hristodeshev/posts/07-03-26/debugging_asp_net_2_0_web_resources_decrypting_the_url_and_getting_the_resource_name.aspx
paste this: bjUPUSWQ4JmcTyMVIrIh1jGscEgqGVqj2ae3m6JJeXHOzWM7YlRfJNuJyAr_tLuAdTFEoVQUb-s73bm8hsuCnocmP40cdgrA_R6HS2gLIjY1 and get nothing back.

The only thing that has worked for me is to contact the individual who has the issue and ask them to clear their temp files. problem is that if they don't clear the temp, then the UI is actually affected.
I get about 300 a day and about 10/second when one of the afftected users is running.
Its pretty frustrating to say the least. I have all but given up at this point.
Code compiles, no errors, no warnings.

answered on 20 Jan 2011, 10:47 PM

This is a very serious issue on our web application.
Controls started disappearing.
We tried adding the skin to each Rad control but issue still happens on some machines.

System.Web.HttpException: This is an invalid webresource request.

Generated: Thu, 20 Jan 2011 21:43:29 GMT

System.Web.HttpException: This is an invalid webresource request.
   at System.Web.Handlers.AssemblyResourceLoader.System.Web.IHttpHandler.ProcessRequest(HttpContext context)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

answered on 27 Jan 2011, 06:06 PM

Hello Eric,

The most common cause of such a mysterious issue is a missing file that is requested through the WebResource.axd handler.

Can you get the WebResource URL that is generating this error? If so, please use the approach suggested in this blog post to get the name of this particular resource. This will give us a clue about what is this resource and where it is located. If it is in our assembly, we will investigate it further.

Kind regards,
Simon
the Telerik team

Browse the vast support resources we have to jump start your development with RadControls for ASP.NET AJAX. See how to integrate our AJAX controls seamlessly in SharePoint 2007/2010 visiting our common SharePoint portal.

answered on 28 Jan 2011, 08:45 AM

Dear All,

Have you found a solution to this problem? Recently I just started getting these errors up to 40 a day .. and even 6 in few seconds.. Here is the error :

/WebResource.axd?d=rIXG_7apM8YM7VCIbyza4Y3RaewiCbR7BXKxTEZ8RsfH_yanrqHpdtNwLEgn4pH_ATVgbGr2Xho_tuvB1WFg-Cs3sjYN2FDBuIvqnEJrHKM1&t=634248267500000000

System.Web.HttpException: This is an invalid webresource request. at System.Web.Handlers.AssemblyResourceLoader.System.Web.IHttpHandler.ProcessRequest(HttpContext context) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

..
Can you help ??

answered on 09 May 2012, 06:29 PM

Hello,

I am getting this error intermittently on a few of our RadControls applications, and I haven't been able to figure out what is going on. I tried the method mentioned in the blog post to find the resource being requested, but I get an error when I try to run it:
Error decrypting data. Are you running your page on the same server and inside the same application as the web resource URL that was generated?
Exception has been thrown by the target of an invocation.
Unable to validate data.

This is being run within the same application that generated the error, and the same server. We are running under RadControls for ASP.NET AJAX Q2 2011 SP1.

answered on 28 Aug 2012, 04:25 AM

I have been experieincing this same problem for some time now. I believe it started (as it did for others) after upgrading to .NET 4.0.

Today, I upgraded to the latest version of the controls (RadControls for ASP.NET AJAX Q2 2012 SP1) to see if that would fix the issue. It did not.

The problem is the same as described above, although it's intermittent. Sometimes a page will load perfectly fine. Other times it will fail with this error for one of the resources and then the page will look funny (since 1 set of resources was not served).

I can't proactively reproduce this problem. When I try, everything works (of course).

But I see this error in the logs frequently for other users, and I will also occaisionally see it when I'm running the site myself.

When this happens, I'll try and use the page discussed to take the problem resource URL and decode it, but I see the same failure as the other person:
Error decrypting data. Are you running your page on the same server and inside the same application as the web resource URL that was generated?
Exception has been thrown by the target of an invocation.
Unable to validate data.

But, I'm not sure that article really works correctly for ASP.NET 4.0 anyways. I can take a resource URL that worked fine, paste it into that sample page, and I'll get some other error like "The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or a non-white space character among the padding characters."

Then again, the same test page with another working resource URL will work fine and gets decoded as expected.

I am at my whit's end on this one. I need some additional guidance on how to debug this issue to find out why it sometimes fails while othertimes it works fine (on the same exact page).

Thanks,
Kevin

answered on 06 Nov 2012, 03:07 PM

Hi Genady Sergeev,
sorry to bring up an old thread but I have this exact issue, although with an older version on Telerik controls. I tried all the suggestions found in this thread, without success.
It's happening randomly, some users (such as myself) have not experienced this at all.
I am unable to decode the webresource url ("Unable to validate data" error).
I am not using future-dated resources and I am using a single web server (production, of course, on my dev box everything looks fine).
The .axd extension is registered and both <httpHandlers> and <handlers> nodes are configured (using Telerik's wizard).
In at least one case we can see the missing resources are related to RadWindow (the borders and icons do not appear).
Any suggestion left?
Thanks

answered on 14 Nov 2012, 10:26 AM

Hi, thanks for your support.
I don't know if this helps in investigating the issue, but let me explain our application layout.
We have an application that is nested in a bigger one. We moved the outer application from ASPNET 2 to 4 and we added Telerik controls to it as well (so, now we also have Telerik handlers and settings in the outer web.config). I am not sure, but from that point on the inner application started to fail with the webresource.axd error.
I do not know if this makes sense, but could it be that the inner application is trying to decode urls/resources based on the outer application settings?
Thanks

answered on 16 Nov 2012, 12:43 PM

Hi Luca,

What you are saying makes sense, however, if that would be the case all the WebResource.axd url's should have failed. Now, as you know the machine key is used for encrypting/decrypting the urls. What you can try doing is to hard code the same machine key on the both apps. You can use this machine key generator for generating your key. Could you please give that a try and let us and the community know whether it helps?

On a side note, I successfully managed to run the WebResource decryption code on my machine running .NET 40. Can you confirm that it works/does not work on your side?

Thank you. :)

All the best,
Genady Sergeev
the Telerik team

If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed now.

answered on 14 Aug 2013, 07:06 AM

Hi,
We have an issue like this The resource cannot be found.

<html>
    <head>
        <title>The resource cannot be found.</title>
        <style>
         body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;}
         p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px}
         b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px}
         H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red }
         H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon }
         pre {font-family:"Lucida Console";font-size: .9em}
         .marker {font-weight: bold; color: black;text-decoration: none;}
         .version {color: gray;}
         .error {margin-bottom: 10px;}
         .expandable { text-decoration:underline; font-weight:bold; color:navy; cursor:hand; }
        </style>
    </head>

    <body bgcolor="white">

            <span><H1>Server Error in '/Shipmate' Application.<hr width=100% size=1 color=silver></H1>

            <h2> <i>The resource cannot be found.</i> </h2></span>

            <font face="Arial, Helvetica, Geneva, SunSans-Regular, sans-serif ">

            <b> Description: </b>HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable.  Please review the following URL and make sure that it is spelled correctly.
            <br><br>

            <b> Requested URL: </b>/Shipmate/WebResource.axd<br><br>

            <hr width=100% size=1 color=silver>

            <b>Version Information:</b> Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.2012

            </font>

    </body>
</html>


Please let me know do you need more information to trace the error.

Regards
Shibin

answered on 16 Aug 2013, 12:00 PM

Hi,
We have the same issue .The resource cannot be found.
"NetworkError: 404 Not Found - http://192.168.1.185/Registers/WebResource.axd?d=jNVdfMkQ8CFZaRWvSwpFVgGHdZOw0vfifPU8JFRYLwsgPV2abkh1K7kyOapAlw1DMVipeNal-JnwlrzpBPGioZ1l6KSFPUZX0r9nMwuppMx6UZ4-yTKBnfV2Pq8gzg1dSQx7l2DaqgfrJkePp4JPtsr22h01&t=635122602125564564"

<html>
    <head>
        <title>The resource cannot be found.</title>
        <style>
         body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;}
         p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px}
         b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px}
         H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red }
         H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon }
         pre {font-family:"Lucida Console";font-size: .9em}
         .marker {font-weight: bold; color: black;text-decoration: none;}
         .version {color: gray;}
         .error {margin-bottom: 10px;}
         .expandable { text-decoration:underline; font-weight:bold; color:navy; cursor:hand; }
        </style>
    </head>

    <body bgcolor="white">

            <span><H1>Server Error in '/Shipmate' Application.<hr width=100% size=1 color=silver></H1>

            <h2> <i>The resource cannot be found.</i> </h2></span>

            <font face="Arial, Helvetica, Geneva, SunSans-Regular, sans-serif ">

            <b> Description: </b>HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable.  Please review the following URL and make sure that it is spelled correctly.
            <br><br>

            <b> Requested URL: </b>/Shipmate/WebResource.axd<br><br>

            <hr width=100% size=1 color=silver>

            <b>Version Information:</b> Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.2012

            </font>

    </body>
</html>


Please let me know if you need more information to trace the error.

Regards
Shibin

answered on 29 Apr 2014, 12:22 PM

Hello Eric,

Unfortunately we never managed to find the root cause for this problem. It is intermittent, shows of in very rare occasions and is hardly reproducible when we try to troubleshoot it.

However, if in your case the problem is constant and reproduces on a regular basis please open a support ticket and provide more details on the request that throws invalid web resource message. A fiddler cap log would be a helpful as well.

Regards,
Genady Sergeev
Telerik

Check out the Telerik Platform - the only platform that combines a rich set of UI tools with powerful cloud services to develop web, hybrid and native mobile apps.

answered on 14 Apr 2015, 03:26 PM

Yes, I can consistantly reproduce this issue, and receive the error on each load or post-back of the below page.

According to the decryptor 'Webresource.aspx' page posted earlier, the error resolves to "pTelerik.Web.UI.Skins|Telerik.Web.UI.Skins.Web20.Common.radGradientListSprite.png "

Message: This is an invalid webresource request.

Stack at System.Web.Handlers.AssemblyResourceLoader.System.Web.IHttpHandler.ProcessRequest(HttpContext context)

at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()

at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Web20 skin is the default set in the webconfig file. UI.Skins DLL version 2015.1.225.45

<%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="Manage_Roles.aspx.cs" Inherits="MNMilpo.Admin.Manage_Roles" %>

<asp:Content ID="Content1" ContentPlaceHolderID="HeadContent" runat="server">

<%@ MasterType virtualpath="~/Site.Master" %>

<link href="../MasterStyles.css" rel="stylesheet" />

<style>

td {

vertical-align:top;

}

</style>

<script type="text/javascript">

function RowDblClick(sender, eventArgs) {

sender.get_masterTableView().editItem(eventArgs.get_itemIndexHierarchical());

};

function entryAdded(sender, eventArgs) {

var text = eventArgs.get_entry().get_text();

var value = eventArgs.get_entry().get_value();

document.getElementById('<%=hfpers.ClientID %>').value = value;

document.getElementById('<%=hftext.ClientID %>').value = text;

};

var limit = 1; //Setting the maximum number of entries

function OnClientDropDownOpening(sender, args) {

if (sender.get_entries().get_count() == limit) {

//var firstEntry = sender.get_entries().getEntry(0);

//sender.get_entries().remove(firstEntry);

args.set_cancel(true);

}

};

function requesting(sender, eventArgs) {

var context = eventArgs.get_context();

};

function OnClientNodeClicking(sender, eventArgs) {

var node = eventArgs.get_node();

node.toggle();

var lbl = document.getElementById('<%=lblSelUnit.ClientID %>')

lbl.innerHTML = node.get_text();

if (node.get_level() == 4) {

ExpandBnNode(node);

}

function ExpandBnNode(node) {

var siblings = node.get_nodes();

var siblingsCount = siblings.get_count();

for (var nodeIndex = 0; nodeIndex < siblingsCount; nodeIndex++) {

var siblingNode = siblings.getNode(nodeIndex);

siblingNode.expand();

}

</script>

</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="BodyContent" runat="server">

<div class="CentDiv">

<table class="CentTable">

<tr><th colspan="3">Manage User Roles</th></tr>

<tr>

<td colspan="2"><h3>Select a Soldier:</h3>

A minumum of 3 characters is required:

<telerik:RadAutoCompleteBox runat="server" OnClientDropDownOpening="OnClientDropDownOpening" TextSettings-SelectionMode="Single" ID="RadAutoCompleteBox1" InputType="Token" Label="Select Domain Users" Width="350px" DropDownWidth="350px" MaxResultCount="10" AllowCustomEntry="false" EmptyMessage="LAST FIRST MI" OnClientEntryAdded="entryAdded" MinFilterLength="3" onclientrequesting="requesting" OnEntryAdded="RadAutoCompleteBox1_EntryAdded">

<webservicesettings path="../dropdownnames.asmx" method="populateNewUsers" />

</telerik:RadAutoCompleteBox>

</td>

<td>

<asp:HiddenField ID="hftext" runat="server" />

<asp:HiddenField ID="hfpers" runat="server" />

<asp:Button runat="server" ID="btnHidden" Style="display: none;" OnClick="btnHidden_Click" />

</td>

</tr>

<tr>

<td>Selected person info<br />

<asp:Label ID="tbxPersId" runat="server" /><br />

<asp:Label ID="tbxName" runat="server" /><br />

</td>

<td colspan="2">

<telerik:RadGrid ID="grdUserRoles" runat="server" AutoGenerateColumns="false" AutoGenerateDeleteColumn="true" OnItemCommand="grdUserRoles_ItemCommand">

<MasterTableView ShowHeadersWhenNoRecords="true" CommandItemDisplay="Bottom" DataKeyNames="intPersId, strRoleName">

<CommandItemSettings ShowAddNewRecordButton="false" />

<Columns>

<telerik:GridBoundColumn DataField="strRoleName" HeaderText="Profile" />

<telerik:GridBoundColumn DataField="strRole" HeaderText="Role" />

<telerik:GridBoundColumn DataField="strReportSequence" HeaderText="Role RSC" />

<telerik:GridBoundColumn DataField="UPC" HeaderText="UIC" />

<telerik:GridBoundColumn DataField="UNAME" HeaderText="Unit Name" />

<telerik:GridBoundColumn DataField="strApprovedBy" HeaderText="Approved By" />

</Columns>

</MasterTableView>

</telerik:RadGrid>

</td>

</tr>

<tr>

<td>

<h3>

Select a Role:

</h3><br />

<telerik:RadListBox ID="lbxRoles" runat="server" CheckBoxes="false" ShowCheckAll="false" Width="300px" Height="300px" SelectionMode="Single">

</telerik:RadListBox>

</td>

<td>

<h3>Select a Unit: <asp:Label ID="lblSelUnit" runat="server" Text="NONE" /></h3><br />

<telerik:RadTreeView ID="RoleOrgTree" runat="server" LoadingStatusPosition="BeforeNodeText" DataFieldID="ITEMID" DataFieldParentID="PARENTID" DataTextField="UPC" DataValueField="ITEMID" OnNodeDataBound="orgTree_NodeDataBound" BorderColor="Black" BorderStyle="Solid" Height="400px" ShowLineImages="true" Width="250px" OnClientNodeClicking="OnClientNodeClicking">

<DataBindings>

<telerik:RadTreeNodeBinding Expanded="True"></telerik:RadTreeNodeBinding>

</DataBindings>

</telerik:RadTreeView>

</td>

<td><br />

<h3>Profile Name:</h3> <asp:TextBox ID="tbxProfileName" runat="server" Columns="50" Text="Enter a Distinct Profile Name" /><br />

<br />

<asp:RequiredFieldValidator ID="fieldValName" runat="server" ErrorMessage="A distinct Profile name is required!" ControlToValidate="tbxProfileName" ValidationGroup="VAL" InitialValue="Enter a Distinct Profile Name" ForeColor="Red" Display="Dynamic" SetFocusOnError="true">

</asp:RequiredFieldValidator>

<br />

<asp:Button ID="btnAddRole" runat="server" OnClick="btnAddRole_Click" Text="Add Role to User" Enabled="false" CausesValidation="true" ValidationGroup="VAL" />

</td>

</tr>

</table>

</div>

</asp:Content>

This error seems to only exist on pages where the RadAutoCompleteBox is calling a webservice.

Master page contains a RadMenu, two dropdowns and a couple of labels. Along with the RadScriptManager and RadClientExportManager

answered on 23 Apr 2015, 12:20 PM

Genady, you lost me there.

I have had the 'webresource not found' error pop-up randomly over the last 5 days, but not consistantly. I have two methods for decrypting the resource url; one is from the previous zip of WebResource.aspx which works perfectly.

The other is built into the applications error handling, which intercepts the error and sends an email to the admin with the error details. This process, which uses the same decrypt procedure as the WebResource.aspx, fails as the resource url 'is not a Base64 encoded string' .

Yet when I copy the URL from the resulting email and decrypt using the WebResource.aspx... it decrypts.

Still suspect that the original invalid webresource request stems from missing or corrupted dll on the IIS as subsequent clean reloads have eliminated the error for a time.

answered on 01 May 2015, 02:07 PM

Its back.

" Message: This is an invalid webresource request.
Stack    at System.Web.Handlers.AssemblyResourceLoader.System.Web.IHttpHandler.ProcessRequest(HttpContext context)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Web Resource: pTelerik.Web.UI.Skins|Telerik.Web.UI.Skins.Web20.Common.radGradientListSprite.png "

Walked through the steps at Telerik Web Resource Troubleshooting, verified that the server date/time per Stack Overflow answer, verified the skins dll on the server is the most current version. Single IIS, no concerns about the machine decryption key.
Still receive one error per selection change in the list box.

Please verify that this embedded resource is properly registered in the DLL.

Error occurs on selection of an item in the below listbox:

<telerik:RadListBox ID="lbxRoles" runat="server" CheckBoxes="false" ShowCheckAll="false" Width="300px" Height="300px" SelectionMode="Single">

</telerik:RadListBox>

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"This is an invalid webresource request" Exception!

50 Answers, 1 is accepted