Applications of the Land Survey Office (Geoviewer, Terrain analysis, Archives, Names of the World) require the use of supported operating systems for which web browser updates are available in order to function properly.

Detailed user device requirements:

• 64-bit system (can be verified in task manager)
• WebGL2 support (can be verified here: https://get.webgl.org/webgl2)
• A web browser in the currently supported version released by its manufacturer.
  

The proper functioning of the Geoportal ČÚZK web information pages is always tested on the latest versions of web browsers.