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Steven Karp · 07-22-2017, 03:07 PM

I'm getting this certificate failure against code.calibre-ebook.com when I try to upgrade any of several Linux machines.

wget reports "Unable to locally verify the issuer's authority." and Firefox says

Code:

code.calibre-ebook.com uses an invalid security certificate.

The certificate is not trusted because the issuer certificate is unknown. The server might not be sending the appropriate intermediate certificates. An additional root certificate may need to be imported

Error code: SEC_ERROR_UNKNOWN_ISSUER

This had been working as recently as 7/15. Has something changed at that end in the past week?

07-22-2017, 03:07 PM	#7
Steven Karp Enthusiast Posts: 38 Karma: 10 Join Date: May 2014 Device: Windows 10 Tablet / Calibre or Nexus 9 / Moon+	I'm getting this certificate failure against code.calibre-ebook.com when I try to upgrade any of several Linux machines. wget reports "Unable to locally verify the issuer's authority." and Firefox says Code: code.calibre-ebook.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. The server might not be sending the appropriate intermediate certificates. An additional root certificate may need to be imported Error code: SEC_ERROR_UNKNOWN_ISSUER This had been working as recently as 7/15. Has something changed at that end in the past week?