Zlib could not decompress the stream. Header length

Good afternoon,

I’m experiencing the issue of not being able to update the current airac with the Navigraph Hub, I’m getting the error ‘Zlib could not decompress the stream. Header length’. I see there have been issues before and have tried all the mentioned solutions ie using VPN, downloading an extractor, deleting the files in Navigraph folder, re-installing the hub. But unfortunately cannot seem to find a solution. Any help would be much appreciated.

Hi TGHardie,

We are trying to resolve this issue once and for all… Could you please install this test-program and confirm if it downloads successfully?

Kind regards,


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