Strange, it didn't update any files and there were no errors

[marciusbezerra]

I looked at the dates, the files still have the old dates, it's as if I hadn't updated anything, where were the files copied to?

If an error message occurred it would be easier

     # ... 
    - name: Publish
      run: dotnet publish ./MyApp/MyApp.csproj -c Release -o ./publish

    - uses: ChristopheLav/iis-deploy@v1
      with:
        website-name: ${{ secrets.SITE_NAME }} # this is my.app
        msdeploy-service-url: https://${{ secrets.SERVER_ADDRESS }}:8172 # this is a IP public
        msdeploy-username: ${{ secrets.USERNAME }} 
        msdeploy-password: ${{ secrets.PASSWORD }}
        source-path: ./publish

I also tried with...
source-path: ${{ github.workspace }}\publish

[ChristopheLav]

They are the Microsoft PowerShell scripts packed into a GitHub action for easy use. Errors are normally available into the output, but Web Deploy are not the best in this area.

Can you re-run your workflow with debug logging enabled ? Can you share the logs (remove the sensitive part depending of the content) ?

Also, have you check into the Web Deploy folder in the event view (navigate to Event Viewer -> Applications and Services Logs -> Microsoft -> Windows -> WebDeploy) on your server ? The Web Deploy service output some usefull logs here.