In my yaml pipeline, I have a deployment job for IIS web app, in .Net Framework 4.6.1. The build job creates a zip containing all files including the Web.config and Web.Fonc.config, Web.PreProd.config, etc. The Xml transformation works on the old release pipeline (classic) and I would like to work also in my new yaml version. But it doesn’t.

Here is a example of the job template :

parameters:
- name: tagsDeploiement
  type: string
- name: cheminArtefact
  type: string
  default: false
- name: environnementsADeployer
  type: object
  default:
  - EnvName: 'Fonc'

jobs:

- ${{ each environment in parameters.environnementsADeployer }}:
  - deployment: WebDeployment_${{ replace(environment.EnvName, '-', '_') }} 

    pool:
      name: Default

    environment: 
      name: ${{ environment.EnvName }}
      resourceType: virtualMachine
      ${{ if ne( parameters.tagsDeploiement, '') }}:
        tags: ${{ parameters.tagsDeploiement }}

    strategy:
      runOnce:
        deploy:
          steps:

          - task: IISWebAppDeploymentOnMachineGroup@0
            displayName: 'Deploy Odata Services'
            inputs:
              WebSiteName: WebServicesA
              VirtualApplication: Services.OData
              Package: '${{ parameters.cheminArtefact }}/applications/Services.OData.zip'
              RemoveAdditionalFilesFlag: true
              XmlTransformation: true
              XmlVariableSubstitution: false

On the server, the files are copied correctly, the web app works, but the xml transformations did not. The configurations files are copied at the root of the app folder (clicking on “Explore” on the app under the website shows it).

Here is the message I get from the pipeline job output :

##[warning]Unable to apply transformation for the given package. Verify the following.
##[warning]1. Whether the Transformation is already applied for the MSBuild generated package during build. If yes, remove the
tag for each config in the csproj file and rebuild.
##[warning]2. Ensure that the config file and transformation files are present in the same folder inside the package.

Everything is in the package, copied correctly as I wrote and the transformation is not applied during build.

Web.config section to be replaced :

<system.webServer>
    
    <security>
      <authorization>
      </authorization>
    </security>

And Web.Fonc.config

<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
  <system.webServer>
    <security xdt:Transform="Replace">
      <authorization >
        <remove users="*" roles="" verbs="" />
        <add accessType="Allow" roles="XX-XXX-ROLE" />
      </authorization>
    </security>
  </system.webServer>
</configuration>

Also note that my main pipeline pass ‘Fonc’ as environment in the parameters (even if it’s the default value).