Superlite might have outdated root certificates. Use --no-check-certificate with wget or download manually via browser (if functional). Alternatively, use curl -k to bypass SSL.
Since MPB is not an official package, we download the official from NCBI. mpb blastx windows 10 superlite install
Although Superlite is already lean, ensure you disable: Superlite might have outdated root certificates
Obtain the MPB BlastX Windows 10 Superlite ISO from community sources like TeamOS . mpb blastx windows 10 superlite install