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ERR_SPDY_INADEQUATE_TRANSPORT_SECURITY error on the Microsoft Update Catalog?

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#1 MolassesMan


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Posted 07 February 2018 - 05:53 AM

Tried to access the site yesterday and this error appears if you try and navigate to it from the MS support site, or to the main page from google. However, if you click on the other links to it from Google, it works fine, and the sites HTTPS seems to be working as well. The home page also loads fine if you navigate to it once you get onto the site, and the updates download fine as well. So what is going on in all the other cases?


What causes this error? Thanks :)

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#2 britechguy


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Posted 07 February 2018 - 12:19 PM

Heaven only knows.  I am getting this error routinely if I try to click through from the KB description pages directly to the Update Catalog page referenced there.

Brian AKA Bri the Tech Guy (website in my user profile) - Windows 10 Home, 64-Bit, Version 1803, Build 17134 


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#3 MolassesMan

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Posted 08 February 2018 - 06:55 AM

Really strange right? I mean as far as I can tell, once you actually get onto the site via links of google, it all works fine :/ Maybe its something to do with the Symantec certificate depreciation. If you inspect the one on the MS suppirt site, google gives a warning about its scheme being outdated.

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