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enwinn
Copper Contributor
Jul 05, 2019

ERR_CERT_COMMON_NAME_INVALID

Eric_Lawrence    As of this post, I am running Microsoft Edge DEV Version 77.0.197.1 (Official build) dev (64-bit) on Windows 7, configured as my default browser.   I have a server running runnin...
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Eric_Lawrence
Icon for Microsoft rankMicrosoft
Mar 10, 2020

RobertoSAG The immediate problem is that the certificate (thumbprint d4b95942dea3f885dc782634cbcc0c8cabe82b4c) being presented for "www.twitter.com" does not contain "www.twitter.com", only "twitter.com". The live certificate I see for Twitter when navigating to it from Texas, USA includes both. When navigating to Twitter from Brazil, I get the certificate lacking the "www." I reached out to Twitter Engineering.

 

It appears that either Twitter mis-issued this certificate (it should have included the "www." prefix), or misconfigured their servers such that a server which was supposed to use a "www." certificate instead chose the certificate that omitted the "www." entry.

 

https://transparencyreport.google.com/https/certificates/g0T85Ehr432jmCfz2vNRWCTBC6toFh9xDoKwc9Jzrl8%3D

 

 

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RobertoSAG
Copper Contributor
Mar 10, 2020

Eric_Lawrence Thank you! I'm not a web developer, but is there anything I can do to report this?

  • RobertoSAG's avatar
    RobertoSAG
    Copper Contributor
    Mar 10, 2020

    Eric_Lawrence Yeah, I'm in Brazil, and that makes sense. Thank you for the assistance!

  • Eric_Lawrence's avatar
    Eric_Lawrence
    Icon for Microsoft rankMicrosoft
    Mar 10, 2020

    The Twitter team reports that they're working on it; see the "reached out to" link above. (I'm presuming that you're located somewhere near Brazil; if not, it might be helpful for you to share a bit more info so I can make sure that they fix this everywhere that is impacted).