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Error: information about application error during remote viewing

I have 2 login pages: Login.aspx - for login and xlogin.aspx for administrator login I just uploaded my project to the server and all the application pages work fine but when I enter the xlogin.aspx admin, I go to the page admin.aspx - but I get this error:

Server Error in '/' Application.
Runtime Error
Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine.

Details: To enable the details of this specific error message to be viewable on remote machines, please create a <customErrors> tag within a "web.config" configuration file located in the root directory of the current web application. This <customErrors> tag should then have its "mode" attribute set to "Off".

<!-- Web.Config Configuration File -->

<configuration>
    <system.web>
        <customErrors mode="Off"/>
    </system.web>
</configuration>


Notes: The current error page you are seeing can be replaced by a custom error page by modifying the "defaultRedirect" attribute of the application <customErrors> configuration tag to point to a custom error page URL.

<!-- Web.Config Configuration File -->

<configuration>
    <system.web>
        <customErrors mode="RemoteOnly" defaultRedirect="mycustompage.htm"/>
    </system.web>
</configuration>

This is my web.config

<?xml version="1.0"?>

<configuration>
  <connectionStrings>
    <clear/>
    <add name="PROJEntities" connectionString="metadata=res://*/PROJModel.csdl|res://*/PROJModel.ssdl|res://*/PROJModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;Data Source=000.000.0.00;Initial Catalog=DBNAME;User ID=MYUSERNAME;Password=MYPASS;MultipleActiveResultSets=True&quot;" providerName="System.Data.EntityClient"/>
  </connectionStrings>

  <system.web>
    <compilation debug="true" targetFramework="4.0" />

    <authentication mode="Forms">
        <forms loginUrl="~/Login.aspx" timeout="720" slidingExpiration="true" defaultUrl="~/Gateway.ashx"/>
    </authentication>

    <customErrors mode="Off"/>
    <pages enableEventValidation="false" viewStateEncryptionMode="Never"></pages>
  </system.web>

  <system.webServer>
     <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>

  <system.web.extensions>
    <scripting>
      <webServices>
        <jsonSerialization>
          <converters>
            <add type="PROJ.Presentation.Common.DateTimeConverter" name="DateTimeJavaScriptConverter"/>
          </converters>
        </jsonSerialization>
      </webServices>
    </scripting>
  </system.web.extensions>
</configuration>
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4 answers

Dear olga, it’s clear what the message says. Disable user errors to view details about this error, to fix it, and then close them. So add mode = "off" as:

<configuration>
    <system.web>
        <customErrors mode="Off"/>
    </system.web>
</configuration>

Relative answer: Website Deployment: 500 - Internal Server Error

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This may be the message you receive even when user errors are disabled in the web.config file. This may mean that you have run out of free space on the disk on which the application is located. Clean log files if you have no other place to get to disk.

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In my case, I received this message because there is a special char (&) in my connection string, we delete it, then everything is fine.

Greetings

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