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ssllabs HSTS, possible false positive?

Question asked by j-mailor on Feb 15, 2016
Latest reply on Feb 15, 2016 by j-mailor

I did a test for one of the servers and there is somehow strange result in HSTS displaying "Invalid" value "null", but I have checked browser http header and there is info 3600. Is there something I don't understand of is there a false positive? I tested both on www.sslabs.com/ssltest and also on dev.sslabs.com/ssltest, the same result.

 

HSTS Invalid possible false positive.png

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