Hello Graig, Node-red is running on virtual pc with Windows 10. This XML file is exported by thermometer and saved in this location, Then offered by IIS server using http.
At this time we use it by another aplication (not Node-red, but aplication done using C#) and there is no problem. So I suppose there is no problem with access and with user rights ... I can see / can access this file using browser OK from pc with Node-red too.
I think I only need to access this file after authenticate with Windows credentials ... but I didn't find way how to do it in Node-red.
It is not possible to change the current working solution.
Thanks for your advice.