Misleading applicationHost.xdt example for adding allowedServerVariables

[Bouke Haarsma]

The section on Add an allowedServerVariables is misleading. The example shown only works for adding a single variable, it needs an xdt:Locator directive to add additional variables:

Before:

<?xml version="1.0"?> 
<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform"> 
  <system.webServer> 
    <rewrite>
      <allowedServerVariables>
        <add name="CONTENT_TYPE" xdt:Transform="InsertIfMissing" />
      </allowedServerVariables>
    </rewrite>
  </system.webServer>
</configuration>

After:

<?xml version="1.0"?> 
<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform"> 
  <system.webServer> 
    <rewrite>
      <allowedServerVariables>
        <add name="CONTENT_TYPE" xdt:Transform="InsertIfMissing" xdt:Locator="Match(name)" />
      </allowedServerVariables>
    </rewrite>
  </system.webServer>
</configuration>

[Joaquín Vano Newman]

Hi

If the problem persists and is related to running it on Azure App Service, please open a support incident in Azure:
https://learn.microsoft.com/en-us/azure/azure-portal/supportability/how-to-create-azure-support-request

This way we can better track and assist you on this case

Thanks,

Joaquin Vano
Azure App Service