The original post: /r/pihole by /u/Madmartigan1 on 2024-10-27 19:06:09.

 [✗] Retrieval of supported OS list failed. dig failed with return code 10.
      Unable to determine if the detected OS (Debian 10) is supported
      Possible causes for this include:
        - Firewall blocking certain DNS lookups from Pi-hole device
        - ns1.pi-hole.net being blocked (required to obtain TXT record from versions.pi-hole.net containing supported operating systems)
        - Other internet connectivity issues

      https://docs.pi-hole.net/main/prerequisites/#supported-operating-systems

      If you wish to attempt to continue anyway, you can try one of the following commands to skip this check:

      e.g: If you are seeing this message on a fresh install, you can run:
             curl -sSL https://install.pi-hole.net | sudo PIHOLE_SKIP_OS_CHECK=true bash

           If you are seeing this message after having run pihole -up:
             sudo PIHOLE_SKIP_OS_CHECK=true pihole -r
           (In this case, your previous run of pihole -up will have already updated the local repository)

      It is possible that the installation will still fail at this stage due to an unsupported configuration.
      If that is the case, you can feel free to ask the community on Discourse with the Community Help category:
      https://discourse.pi-hole.net/c/bugs-problems-issues/community-help/

  Unable to complete update, please contact Pi-hole Support