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Old 08-05-2018, 05:27 AM   #5
chaley
Grand Sorcerer
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Posts: 12,456
Karma: 8012886
Join Date: Jan 2010
Location: Notts, England
Device: Kobo Libra 2
Quote:
Originally Posted by any_holder View Post
Thanks. I also suspect that it is the firewall. I have looked at various aspects and cannot isolate the issue. I have also turned the firewall off completely, and the same issue persists. Any idea why CC would not work even if the firewall is turned off?
There are several possibilities for why calibre is being blocked:
  • The firewall is not in fact turned off. People have reported that parts of McAfee keep running even when disabled.
  • McAfee firewall is off but the Windows firewall is on and calibre is not excluded.
  • The network has reverted to "public".
  • Some other component of McAfee is blocking connections, such as "anti ramsonware" or "internet security".
  • Some other software is blocking connections. For example, the "anti-ramsonware" component in new Acronis releases seems to block connecting to calibre.
I suggest doing 2 things:
    • Turn on the calibre content server on port 8080.
    • Attempt to connect to the server from a browser on the machine running calibre. If that doesn't work then calibre is being well-and-truly blocked on its own machine. If that works ...
    • Attempt to connect to the server from a browser on your device. If that doesn't work then the problem is not in CC, but is instead in the network or on the computer running calibre. If that works ...
    • Attempt to connect with CC's Content Server Connection. If that doesn't work but the above do then we know the problem is in CC.
  1. Start the computer running calibre in safe mode. The FAQ that DoctorOhh referenced has instructions. Attempt to connect with both the content server and the wireless device. If either works then you know that some software on the calibre computer is blocking connections.
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