I am relatively new to QGIS and use version 3.4.11 for a university project of Polish archaeological features.

I am trying to get the "Digital Elevation Model ISOK – Hillshade" WMTS Layer from "https://www.geoportal.gov.pl/uslugi/usluga-przegladania-wmts" working, but when I try to connect via the Data source Manager, it shows the error: "...failed: Host requires authentication". I use "http://mapy.geoportal.gov.pl/wss/service/WMTS/guest/wmts/ISOK_CIEN?SERVICE=WMTS&REQUEST=GetCapabilities" to connect to the server.

It worked very well before, but when I tried to connect today, the error appeared. What could be the problem?

  • Maybe the host now requires identification for that service.
    – Erik
    Oct 17, 2019 at 15:07
  • That is what i fear. But Since the problem only crops up with the ISOK sources, i was hoping it was only a mistake in my request. I also found no notice about this on the rest of the website.
    – IVGAChris
    Oct 17, 2019 at 15:36
  • Currently it says "internal server error". Maybe wait a few days.
    – Erik
    Oct 18, 2019 at 7:08

1 Answer 1


The ISOK layer links has changed since 15th October: Istotne zmiany w danych i usługach związanych z Numerycznym Modelem Terenu

For GetCapabilities request you can try this link:


I don't use QGIS, I've tested this link only in a web browser - seems to work fine.

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